TECHNICAL FIELD
[0001] The invention relates to radio frequency resonators and, particularly, ceramic resonators.
TECHNICAL BACKGROUND
[0002] Ceramic resonators are widely used to form radio frequency (RF) filters for radio
transmitters and radio receivers. Such ceramic filters are typically made of ceramic
material that provides a piezo-electric effect and resonates at one or more frequencies.
A dual-mode ceramic resonator may resonate at two resonating frequencies, and a triple-mode
ceramic resonator may resonate at three resonating frequencies. The ceramic resonators
may be combined to each other to form a ceramic filter having desired pass-band characteristics.
[0003] US 5 812 036 discloses a filter comprising a plurality resonator stages between sequentially coupled
between input and output ports. The resonator stages are arranged such that at least
one non-sequential pair of stages are physically adjacent. The non-sequential pair
of resonator stages are separated by a common internal wall, which defines a bypass
coupling aperture therebetween. During operation of the filter, attenuation poles
are formed in the filter response due to bypass coupling between the non-sequential
pair of resonator stages through the bypass coupling aperture. The preferred U-shaped
arrangement of the resonator stages enables the formation of attenuation poles, without
using an external bypass connection, by permitting inductive or capacitive bypass
coupling through the bypass aperture.
[0004] US2005/116797 discloses a voltage-controlled tunable filter which includes a plurality of coaxial
combline resonators and wherein at least one of said plurality of coaxial combline
resonators includes at least one metallized through-hole. The coupling between adjacent
resonators is obtained via an aperture formed on a common wall between the resonators,
and is controlled by the aperture size and position. An input/output coupling metallization
on at least one surface of said plurality of coaxial combline resonators is included
as well as at least one tunable varactor associated with said plurality of coaxial
combline resonators. An iris connects said plurality of coaxial combline resonators.
The tunable dielectric capacitors can include a substrate having a low dielectric
constant with planar surfaces and the substrate can be include a tunable dielectric
film of low loss tunable dielectric material. The input/output coupling metallization
can be metallized with a predetermined length, width, and gap distance and low loss
isolation material can be used to isolate the outer bias metallic contact and the
metallic electrode on the tunable dielectric.
[0005] EP 0 208 424 discloses a filter formed by coupling plural resonators (13i, 13o) via an electromagnetic
field. Each resonator comprises a tubular dielectric (1) having at least one flat
side surface (3), a through-hole (2) provided in the axial direction of the dielectric,
an inner conductor film (4) provided on a wall forming the through-hole, and an outer
conductor film (5) provided on side surfaces (7,8,9) of the dielectric (1), and resonates
in TEM mode in the axial direction by cooperation of the inner conductor (4), outer
conductor (5) and the dielectric (1) intervening between them. Each resonator further
has a coupling window (6) which is formed by removing a part of the outer conductor
film (5) on the flat side surface (3). The resonators (13i, 13o) are disposed so that
their flat side surface (3) having the coupling windows (6) contact each other, and
are coupled together via electromagnetic field through the coupling windows.
[0006] EP 1 544 939 discloses a hybrid filter assembly having a first ceramic triple-mode mono-block
resonator, a second ceramic triple-mode mono-block resonator and at least one metallic
resonator coupled to at least one of the first and second mono-block resonators. Each
triple-mode mono-block resonator supports three resonant modes and each metallic resonator
supports an additional mode, thereby providing a hybrid filter assembly of reduced
size having more than six poles.
[0007] US 2012/049983 discloses a 7 pole resonator filter including a dual mode resonator and a triple
mode resonator may include a first dual mode resonator including independent adjusting
portions adjusting each frequency according to two resonant modes, and having at least
one conductive surface, a triple mode resonator including independent adjusting portions
adjusting each frequency according to three resonant modes separate from the two resonant
modes, and having at least one conductive surface, a first connecting portion electrically
connecting the first dual mode and the triple mode resonators, a second dual mode
resonator including independent adjusting portions adjusting each frequency according
to two resonant modes separate from the two resonant modes and the three resonant
modes, and having at least one conductive surface, and a second connecting portion
electrically connecting the triple mode resonator and the second dual mode resonator.
The three dual mode resonators have similar shapes.
BRIEF DESCRIPTION
[0008] Some aspects of the invention are defined by the subject-matter of the independent
claims. Embodiments are defined in the dependent claims.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] In the following the invention will be described in greater detail by means of preferred
embodiments with reference to the accompanying drawings, in which
Figures 1A and 1B, illustrate a resonator assembly according to an embodiment of the
invention;
Figure 1C illustrates a resonator assembly according to another embodiment of the
invention;
Figure 2 illustrates plating of the resonator assembly according to an embodiment
of the invention;
Figure 3 illustrates a resonator assembly according to another embodiment of the invention;
Figure 4 illustrates a resonator assembly according to an embodiment of the invention,
provided with electrodes;
Figure 5 illustrates a method for producing a resonator assembly according to an embodiment
of the invention;
Figure 6 illustrates a method for plating the resonator assembly according to an embodiment
of the invention; and
Figures 7 to 9 illustrate some embodiments for tuning the resonator assembly.
DETAILED DESCRIPTION OF EMBODIMENTS
[0010] The following embodiments are exemplary. Although the specification may refer to
"an", "one", or "some" embodiment(s) in several locations, this does not necessarily
mean that each such reference is to the same embodiment(s), or that the feature only
applies to a single embodiment. Single features of different embodiments may also
be combined to provide other embodiments. Furthermore, words "comprising" and "including"
should be understood as not limiting the described embodiments to consist of only
those features that have been mentioned and such embodiments may contain also features/structures
that have not been specifically mentioned.
[0011] Figures 1A and 1B illustrate a conceptual structure of a resonator assembly according
to an embodiment of the invention. The resonator assembly may be comprised of concatenated
ceramic resonators designed to provide a pass band on radio frequencies (RF). State-of-the-art
manufacturing methods enable manufacturing of ceramic resonators that provide resonating
frequencies up to microwave frequencies, e.g. super high frequencies from 0.3 to 30
Gigahertz. As illustrated in Figures 1A and 1B, the resonator assembly may be built
from a plurality of ceramic resonator articles 100, 102 attached to each other (see
Figure 1B). A first ceramic resonator article 100 may provide one or more resonance
frequencies, while a second ceramic resonator article 102 may provide one or more
resonance frequencies on frequencies different from that/those of the first ceramic
resonator article 100. Each ceramic resonator article may resonate at more than one
frequencies. A dual-mode ceramic resonator may provide two resonance frequencies,
while a triple-mode ceramic resonator may provide three resonance frequencies. Combination
of resonance frequencies of the ceramic resonator articles attached together may define
the pass band of the resonator assembly.
[0012] The resonance properties of the ceramic resonators may be modified by reshaping the
ceramic resonators. The reshaping may comprise grinding ceramic material off from
the ceramic resonators. This process requires very high accuracy, e.g. the tolerances
may be in the order of micrometres, and the reshaping is typically carried out manually
which is time-consuming. Another feature of conventional methods is that the ceramic
resonators are plated completely with conductive plating and a pattern is formed in
the surface of the plating, e.g. by employing laser pattern forming techniques. If
the resonator does not have the desired properties, the plating needs to be removed
at least from one surface of the ceramic resonator in order to reshape the ceramic
material. Then, the plating and the patterning needs to be repeated which is time-consuming.
[0013] Let us now describe a resonator assembly according to an embodiment of the invention
with reference to Figures 1A and 1B. The resonator assembly comprises the first ceramic
resonator article 100 having determined radio frequency (RF) resonance characteristics,
and the second ceramic resonator article 102 having determined radio frequency resonance
characteristics. The RF resonance characteristics of the ceramic resonator articles
100, 102 of the resonator assembly may differ from each other. The resonator assembly
further comprises a coupling sheet 104 attached between the first ceramic resonator
article 100 and the second ceramic resonator article 102 (see Figure 1B where the
ceramic articles 100, 102 and the coupling sheet are attached to each other). The
coupling sheet 104 is made of electrically conductive material and comprise a pattern
in the form of at least one through hole 106 tuning properties of the resonator assembly.
[0014] An effect of the present embodiment is that the tuning of the resonator assembly
properties may be carried out by modifying or replacing the coupling sheet. This brings
the advantage in that the replacement of the coupling sheet is fast and easy to perform.
[0015] In an embodiment, the resonator assembly forms a filter apparatus. The filter apparatus
may be a duplex filter or a filter configured to be disposed on a single signal line,
e.g. it may comprise only one input and only one output.
[0016] A ceramic resonator article may be an object or a body made of ceramic material.
The material, shape, and dimensions of the article may be designed such that the ceramic
resonator article has the determined frequency characteristics, e.g. the determined
resonance properties.
[0017] The coupling sheet may be soldered to the ceramic resonator articles 100, 102.
[0018] The material of the coupling sheet may be copper, silver, or another metal alloy
with high conductive plating.
[0019] In an embodiment, sides of the first ceramic resonator article and the second ceramic
resonator article facing the coupling sheet are smooth. In another embodiment, the
side(s) of each ceramic resonator article comprised in the apparatus and facing a
coupling sheet is/are smooth. By smooth it is meant that the side does not comprise
any pattern, recession, protrusion, and/or hole. The smooth surface may improve the
positioning of the coupling sheet.
[0020] In an embodiment, at least one of the first ceramic resonator article and the second
ceramic resonator article is completely enclosed. In some embodiments, all the ceramic
resonator articles of the resonator assembly are completely enclosed. In another embodiment,
a subset of the ceramic resonator articles of the resonator assembly is completely
enclosed. A completely enclosed ceramic resonator articles may contain no cavities,
holes, or recessions.
[0021] The pattern may be formed into the coupling sheet by employing laser cutting, water
cutting, stamping, or any other mass production method used in patterning metallic
sheets. The pattern may comprise determined geometrical shapes that tune the frequency
characteristics of the resonator assembly. One or more rectangular holes is one option
for the pattern of the coupling sheet, but the pattern may comprise a plurality of
holes having different shapes, e.g. a rectangular shape and a non-rectangular shape.
The location(s) and the dimensions of the hole(s) may define the tuning properties
of the coupling sheet. A person skilled in the art is considered to discover appropriate
patterns for a resonator assembly by employing routine experimentation.
[0022] The cross-sectional dimensions of the coupling sheet may conform to the cross-sectional
dimensions of the ceramic resonator articles. In other words, the surfaces of the
coupling sheet and the ceramic resonator article that face each other may have matching
dimensions, as illustrated in Figure 1A and 1B. This facilitates the positioning of
the coupling sheet between the resonator articles. The thickness of the coupling sheet
may be from 0.05 to 1,0mm, for example.
[0023] Figure 1C illustrates an embodiment where a plurality of coupling sheets 104, 110
are disposed between the ceramic resonator articles 100, 102 in a layered manner.
The coupling sheets 104, 110 may have the same pattern 106 or different patterns 106,
112, 114. The different pattern may be realized by providing a different number of
holes and/or by providing the holes in different shapes in different coupling sheets.
The number of layered coupling sheets 104, 110 between two ceramic resonator articles
may be two but, in some embodiments, more than two coupling sheets may be used. The
coupling sheets 104, 110 may be attached to each other and to the ceramic resonator
articles in a similar manner as the single coupling sheet, e.g. by soldering. Providing
multiple layers of coupling sheets attached to each other provides for more tuning
options.
[0024] Figure 2 illustrates an embodiment where the first ceramic resonator article 100
and the second ceramic resonator article 102 are plated with electrically conductive
plating except for the sides 200 arranged to face the coupling sheet(s) 104. The plating
is illustrated with the dotted pattern. The use of the electrically conductive coupling
sheet may replace the need for the plating on the sides of the adjacent ceramic resonator
articles 100, 102 that face one another. The plating may be silver plating that may
be formed by dipping, screening, or dispensing silver paste on the surface to be plated
and by sintering the ceramic resonator article so that the paste adheres to the surface
of the article. An advantage provided by this embodiment is simplified plating process.
Since the side(s) facing the coupling sheet(s) is/are not plated, those sides may
be gripped in the plating process when dispensing the plating paste on the other sides.
As a consequence, the plating of the ceramic resonator article may be made by performing
only a single plating and a single sintering operation. In conventional solutions
where all sides are plated, the process comprises at least two dispensing and sintering
steps. The embodiment of Figure 2 is applicable to the embodiments of Figures 1A,
1B, and 1C in a straightforward manner.
[0025] In some embodiments, the resonator assembly comprises more than two ceramic resonator
articles. A coupling sheet may be provided between any two ceramic resonator articles
or between all adjacent ceramic resonator articles. The number of the ceramic resonator
articles may depend on the required bandwidth characteristics of the resonator assembly.
Figure 3 illustrates an embodiment of the resonator assembly where the resonator assembly
further comprises at least a third ceramic resonator article 300 having determined
radio frequency resonance characteristics. The resonator assembly further comprises
a second coupling sheet attached between the second ceramic resonator article 102
and the third ceramic resonator article 300. The second coupling sheet 304 may also
be made of electrically conductive material and comprise a pattern 302 in the form
of at least one through hole tuning properties of the resonator assembly. When combining
embodiments of Figure 1C and 3, a plurality of coupling sheets may be provided between
any two adjacent ceramic resonator articles.
[0026] As illustrated in the pattern 302 of the second coupling sheet 304 may be different
from the pattern 106 of the first coupling sheet 104. In some embodiments, all the
coupling sheets of the resonator assembly may have different patterns. However, in
other embodiments, at least two coupling sheets of the resonator assembly may have
the same pattern.
[0027] As illustrated in Figures 1A to 3, the ceramic resonator articles 100, 102, 300 and
the at least one coupling sheet 104, 304 are aligned along a line in the resonator
assembly. This forms a resonator assembly having a concatenated structure of alternating
ceramic resonator articles and coupling sheets. At the ends of the structure, ceramic
resonator articles may be provided. Electrodes 400 may be provided at the ends of
the structure, as illustrated in Figure 4. A signal conductor such as a coaxial cable
may be coupled to the electrode 400. In an embodiment, the electrode may be provided
by drilling a hole or a recession on the surface of the ceramic resonator article
at the end of the structure and attaching the electrode inside the hole or the recession.
Conventional solutions for forming the electrode on the surfaces of the ceramic resonator
assembly may be employed.
[0028] Let us now describe a method for producing the resonator assembly according to an
embodiment of the invention. With reference to a general embodiment of the method
illustrated in Figure 5, the method comprises: producing a first ceramic resonator
article having determined radio frequency resonance characteristics (block 500); producing
a second ceramic resonator article having determined radio frequency resonance characteristics
(block 500); producing a coupling sheet made of electrically conductive material and
comprises a pattern in the form of at least one through hole (block 502); and attaching
the coupling sheet between the first ceramic resonator article and the second ceramic
resonator article (block 504).
[0029] In an embodiment, the method further comprises plating the first ceramic resonator
article and the second ceramic resonator article with electrically conductive plating
on all sides except for the sides designed to face the coupling sheet. Referring to
Figure 6, this embodiment comprises obtaining a plurality of ceramic resonator articles.
The ceramic resonator articles may be manufactured by using state-of-the-art manufacturing
methods. In block 602, the ceramic resonator articles are plated according to this
embodiment. Block 602 may comprise or consist of a paste dispensing phase where plating
paste is dispensed on the surfaces of the ceramic resonator articles to be plated
and a sintering phase is which the articles are heated such that the paste attaches
to the surfaces. The method may further comprise a step where determined patterns
are formed on the plating, e.g. by employing laser-patterning. The patterns may comprise
the above-described electrodes and/or any patterns that affect the frequency properties
of the ceramic resonator article.
[0030] Let us now consider some embodiments for tuning the resonator assembly with reference
to Figures 7 to 9. In Figures 7 to 9, blocks having the same reference number represent
substantially similar operations in different Figures. Referring to Figure 7, the
tuning process may be carried out after block 504, e.g. when the coupling sheet(s)
are soldered or otherwise attached between the ceramic resonator articles. Block 700
comprises measuring frequency properties of the resonator assembly. Block 700 may
comprise measuring bandwidth, Q factor, filter's S-parameter, band pass properties,
etc. Upon measuring the frequency properties, the measured properties may be compared
with specified properties and it may be determined whether or not the measured properties
are within tolerances from the specified properties. This may be carried out by a
state-of-the-art ceramic filter testing apparatus or testing system. Then, it may
be determined, on the basis of the measurements, whether or not the frequency properties
need to be tuned (block 702). Upon determining that the frequency properties are sub-optimal
and need to be tuned, the process may proceed to block 704 where at least one coupling
sheet is replaced with another coupling sheet. Block 704 may comprise determining
which one of the coupling sheets of the resonator assembly needs to be replaced on
the basis of the measurements, selecting a new coupling sheet that tunes the frequency
properties towards the specified frequency properties and replacing the determined
coupling sheet with the selected new coupling sheet. Block 704 may comprise replacing
one coupling sheet or multiple coupling sheets at once. The new coupling sheet(s)
may be attached to the resonator assembly and the process may return to block 700
for new measurements. When it is determined in block 702 that no more tuning is needed,
the process may end.
[0031] Figure 8 illustrates an embodiment where the tuning is embedded to the building of
the resonator assembly from the ceramic resonator articles and multiple coupling sheets.
Referring to Figure 8, the ceramic resonator articles and the coupling sheets are
produced or obtained. The coupling sheets may comprise a first subset of coupling
sheets having one pattern and at least a second subset having a different pattern.
Accordingly, multiple subsets of coupling sheets with different frequency tuning properties
are provided. A first coupling sheet is attached between two ceramic resonator articles
in block 800. Then, the frequency properties of the resonator assembly may be measured
(block 700). On the basis of the measurements, it may be determined how the frequency
properties of the resonator assembly built so far need to be tuned. In response to
said determining, a second coupling sheet may be selected in block 804, wherein the
second coupling sheet comprises a pattern that tunes the frequency properties in a
manner determined on the basis of the measurements. Then, the second coupling sheet
may be attached between a ceramic resonator article attached to the resonator assembly
previously in block 800 and a new ceramic resonator article. Then, the frequency properties
of the resonator assembly now comprising three ceramic resonator articles and two
coupling sheets may be measured. In this manner, new ceramic resonator articles and
new coupling sheets that are selected on the basis of the measurements may be attached
to the resonator assembly. When the resonator assembly is determined to be complete
(block 802), the process may end.
[0032] The embodiments of Figures 7 and 8 may be combined. For example, the measurements
carried out in block 700 of Figure 8 may indicate that one or more coupling sheets
attached to the resonator assembly needs to be replaced. The replacement of the coupling
sheet(s) with new ones may be carried out according to the embodiment of Figure 7.
[0033] Figure 9 illustrates an embodiment where the tuning is carried out by modifying the
ceramic resonator article(s). The process of Figure 9 may be carried out when the
resonator assembly has been built, e.g. when the coupling sheets are attached to the
resonator assembly. Referring to Figure 9, upon determining, on the basis of the measurements
carried out in block 700, that the frequency properties need to be tuned, ceramic
material may be removed from a side of at least one ceramic resonator article of the
resonator assembly (block 900). The ceramic material may be removed from a non-plated
surface of the ceramic resonator article(s), e.g. the side that faces a coupling sheet.
Block 900 may comprise disassembling the resonator assembly by separating at least
one coupling sheet and a ceramic resonator article, thus exposing an non-plated surface
of the ceramic resonator article. The measurements carried out in block 700 may indicate
which one or more of the ceramic resonator articles needs to be modified. Then, the
non-plated surface may be ground and, thus, the frequency properties of the ceramic
resonator article tuned. Upon completing block 900, the resonator assembly may be
reassembled. The reassembling may comprise soldering the disassembled parts together,
and new measurements may be carried out in block 700. In another embodiment, the reassembling
may comprise assembling the disassembled parts together by bringing them into contact
with each other without fixing them together, e.g. by soldering. For example, the
disassembled parts may be reassembled in a jig so that they are in contact with each
other and, then, new measurements may be made. Since the soldering is not used between
the reassembling and the measurements, it is easy to make further modifications if
the measurements show that such modifications are still needed. In this manner, the
process may be iterated until the resonator assembly has frequency properties that
meet the specifications.
[0034] It will be obvious to a person skilled in the art that, as the technology advances,
the inventive concept can be implemented in various ways. The invention and its embodiments
are not limited to the examples described above but may vary within the scope of the
claims.
1. A resonator assembly comprising:
a first ceramic resonator article (100) having determined radio frequency resonance
characteristics;
a second ceramic resonator article (102) having determined radio frequency resonance
characteristics;
characterized by the resonator assembly further comprising a replaceable coupling sheet (104) attached
between the first ceramic resonator article and the second ceramic resonator article,
wherein the replaceable coupling sheet is made of electrically conductive material
and comprises a pattern in the form of at least one through hole (106) for tuning
properties of the resonator assembly.
2. The resonator assembly of claim 1, wherein sides of the first ceramic resonator article
and the second ceramic resonator article facing the replaceable coupling sheet are
smooth.
3. The resonator assembly of claim 1 or 2, wherein at least one of the first ceramic
resonator article and the second ceramic resonator article is completely enclosed.
4. The resonator assembly of claim 3, wherein all ceramic resonator articles of the resonator
assembly are completely enclosed.
5. The resonator assembly of any preceding claim, wherein the first ceramic resonator
article and the second ceramic resonator article are plated with electrically conductive
plating except for the sides arranged to face the replaceable coupling sheet.
6. The resonator assembly of any preceding claim further comprising:
at least a third ceramic resonator article (300) having determined radio frequency
resonance characteristics;
a second coupling sheet (304) attached between the second ceramic resonator article
and the third ceramic resonator article, wherein the second coupling sheet is made
of electrically conductive material and comprises a pattern in the form of at least
one through hole (302) for tuning properties of the resonator assembly.
7. The resonator assembly of claim 6, wherein the pattern of the second coupling sheet
is different from the pattern of the replaceable coupling sheet.
8. The resonator assembly of any preceding claim, wherein the ceramic resonator articles
and at least one of the replaceable coupling sheet and the second coupling sheet are
aligned along a line (A).
9. The resonator assembly of any preceding claim, wherein a plurality of coupling sheets
(104, 110) are provided in layers between two ceramic resonator articles.
10. A method for manufacturing a resonator assembly, comprising:
producing (500) a first ceramic resonator article having determined radio frequency
resonance characteristics;
producing (500) a second ceramic resonator article having determined radio frequency
resonance characteristics;
producing (502) a coupling sheet made of electrically conductive material and comprising
a pattern in the form of at least one through hole; and
attaching (504) the coupling sheet between the first ceramic resonator article and
the second ceramic resonator article,
characterized by the method further comprising:
measuring (700) frequency properties of the resonator assembly;
determining (702), on the basis of the measurements, that the frequency properties
need to be tuned;
in response to said determining, replacing (704) the coupling sheet with another coupling
sheet.
11. The method of claim 10, further comprising: plating (602) the first ceramic resonator
article and the second ceramic resonator article with electrically conductive plating
on all sides except for the sides designed to face the coupling sheet.
12. The method of claim 10 or 11, further comprising after attaching the coupling sheet:
measuring (700) frequency properties of the resonator assembly;
determining (702), on the basis of the measurements, that the frequency properties
need to be tuned;
in response to said determining, removing (900) ceramic material from a side of at
least one of the first ceramic resonator article and the second ceramic resonator
article that faces the coupling sheet.
13. The method of any preceding claim 10 to 12, further comprising after attaching the
coupling sheet:
measuring (700) frequency properties of the resonator assembly;
determining (802), on the basis of the measurements, that the frequency properties
need to be tuned;
in response to said determining, selecting (804) a second coupling sheet that comprises
a pattern that tunes the frequency properties in a manner determined on the basis
of the measurements;
attaching (800) the second coupling sheet to a side of the second ceramic resonator
article and a third ceramic resonator article to the second coupling sheet
1. Resonatoranordnung, umfassend:
einen ersten Keramikresonatorgegenstand (100) mit bestimmten Radiofrequenzresonanzcharakteristika;
einen zweiten Keramikresonatorgegenstand (102) mit bestimmten Radiofrequenzresonanzcharakteristika;
dadurch gekennzeichnet, dass die Resonatoranordnung des Weiteren eine austauschbare Kopplungslage (104) umfasst,
die zwischen dem ersten Keramikresonatorgegenstand und dem zweiten Keramikresonatorgegenstand
befestigt ist, wobei die austauschbare Kopplungslage aus elektrisch leitfähigem Material
gefertigt ist und ein Muster in Form von mindestens einem Durchgangsloch (106) zum
Abstimmen der Eigenschaften der Resonatoranordnung umfasst.
2. Resonatoranordnung nach Anspruch 1, wobei die Seiten des ersten Keramikresonatorgegenstands
und des zweiten Keramikresonatorgegenstands, die zu der austauschbaren Kopplungslage
weisen, glatt sind.
3. Resonatoranordnung nach Anspruch 1 oder 2, wobei mindestens einer von dem ersten Keramikresonatorgegenstand
und dem zweiten Keramikresonatorgegenstand vollständig umschlossen ist.
4. Resonatoranordnung nach Anspruch 3, wobei alle Keramikresonatorgegenstände der Resonatoranordnung
vollständig umschlossen sind.
5. Resonatoranordnung nach einem der vorhergehenden Ansprüche, wobei der erste Keramikresonatorgegenstand
und der zweite Keramikresonatorgegenstand mit Ausnahme der Seiten, die so angeordnet
sind, dass sie zu der austauschbaren Kopplungslage weisen, mit elektrisch leitfähiger
Plattierung plattiert sind.
6. Resonatoranordnung nach einem der vorhergehenden Ansprüche, des Weiteren umfassend:
mindestens einen dritten Keramikresonatorgegenstand (300) mit bestimmten Radiofrequenzresonanzcharakteristika;
eine zweite Kopplungslage (304), die zwischen dem zweiten Keramikresonatorgegenstand
und dem dritten Keramikresonatorgegenstand befestigt ist, wobei die zweite Kopplungslage
aus elektrisch leitfähigem Material gefertigt ist und ein Muster in Form von mindestens
einem Durchgangsloch (302) zum Abstimmen der Eigenschaften der Resonatoranordnung
umfasst.
7. Resonatoranordnung nach Anspruch 6, wobei das Muster der zweiten Kopplungslage sich
von dem Muster der austauschbaren Kopplungslage unterscheidet.
8. Resonatoranordnung nach einem der vorhergehenden Ansprüche, wobei die Keramikresonatorgegenstände
und mindestens eine von der austauschbaren Kopplungslage und der zweiten Kopplungslage
entlang einer Linie (A) ausgerichtet sind.
9. Resonatoranordnung nach einem der vorhergehenden Ansprüche, wobei eine Vielzahl von
Kopplungslagen (104, 110) in Schichten zwischen zwei Keramikresonatorgegenständen
bereitgestellt werden.
10. Verfahren zum Fertigen einer Resonatoranordnung, umfassend:
Produzieren (500) eines ersten Keramikresonatorgegenstands mit bestimmten Radiofrequenzresonanzcharakteristika;
Produzieren (500) eines zweiten Keramikresonatorgegenstands mit bestimmten Radiofrequenzresonanzcharakteristika;
Produzieren (502) einer Kopplungslage, die aus elektrisch leitfähigem Material gefertigt
ist und ein Muster in Form von mindestens einem Durchgangsloch umfasst; und
Befestigen (504) der Kopplungslage zwischen dem ersten Keramikresonatorgegenstand
und dem zweiten Keramikresonatorgegenstand,
dadurch gekennzeichnet, dass das Verfahren des Weiteren umfasst:
Messen (700) von Frequenzeigenschaften der Resonatoranordnung;
Bestimmen (702) basierend auf den Messungen, dass die Frequenzeigenschaften abgestimmt
werden müssen;
in Reaktion auf das Bestimmen Austauschen (704) der Kopplungslage durch eine andere
Kopplungslage.
11. Verfahren nach Anspruch 10, des Weiteren umfassend:
Plattieren (602) des ersten Keramikresonatorgegenstands und des zweiten Keramikresonatorgegenstands
mit elektrisch leitfähiger Plattierung auf allen Seiten außer den Seiten, die konzipiert
sind, um zu der Kopplungslage zu weisen.
12. Verfahren nach Anspruch 10 oder 11, des Weiteren umfassend nach Befestigen der Kopplungslage:
Messen (700) von Frequenzeigenschaften der Resonatoranordnung;
Bestimmen (702) basierend auf den Messungen, dass die Frequenzeigenschaften abgestimmt
werden müssen;
in Reaktion auf die Bestimmung Entfernen (900) von Keramikmaterial von einer Seite
des mindestens einen von dem ersten Keramikresonatorgegenstand und dem zweiten Keramikresonatorgegenstand,
die zu der Kopplungslage weist.
13. Verfahren nach einem der vorhergehenden Ansprüche 10 bis 12, des Weiteren umfassend
nach Befestigen der Kopplungslage:
Messen (700) von Frequenzeigenschaften der Resonatoranordnung;
Bestimmen (802) basierend auf den Messungen, dass die Frequenzeigenschaften abgestimmt
werden müssen;
in Reaktion auf das Bestimmen Auswählen (804) einer zweiten Kopplungslage, die ein
Muster umfasst, das die Frequenzeigenschaften in einer Weise abstimmt, die basierend
auf den Messungen bestimmt wurden;
Befestigen (800) der zweiten Kopplungslage an einer Seite des zweiten Keramikresonatorgegenstands
und eines dritten Keramikresonatorgegenstands an der zweiten Kopplungslage.
1. Ensemble résonateur comprenant :
un premier article résonateur céramique (100) ayant des caractéristiques de résonance
radiofréquence déterminées ;
un deuxième article résonateur céramique (102) ayant des caractéristiques de résonance
radiofréquence déterminées ;
caractérisé en ce que l'ensemble résonateur comprend en outre une feuille de couplage remplaçable (104)
fixée entre le premier article résonateur céramique et le deuxième article résonateur
céramique, la feuille de couplage remplaçable étant constituée de matériau électriquement
conducteur et comprenant un motif sous la forme d'au moins un trou débouchant (106)
pour régler des propriétés de l'ensemble résonateur.
2. Ensemble résonateur de la revendication 1, dans lequel des côtés du premier article
résonateur céramique et du deuxième article résonateur céramique faisant face à la
feuille de couplage remplaçable sont lisses.
3. Ensemble résonateur de la revendication 1 ou 2, dans lequel au moins un du premier
article résonateur céramique et du deuxième article résonateur céramique est totalement
enfermé.
4. Ensemble résonateur de la revendication 3, dans lequel tous les articles résonateurs
céramiques de l'ensemble résonateur sont totalement enfermés.
5. Ensemble résonateur d'une quelconque revendication précédente, dans lequel le premier
article résonateur céramique et le deuxième article résonateur céramique sont plaqués
avec un placage électriquement conducteur à l'exception des côtés disposés pour faire
face à la feuille de couplage remplaçable.
6. Ensemble résonateur d'une quelconque revendication précédente comprenant en outre
:
au moins un troisième article résonateur céramique (300) ayant des caractéristiques
de résonance radiofréquence déterminées ;
une deuxième feuille de couplage (304) fixée entre le deuxième article résonateur
céramique et le troisième article résonateur céramique, la deuxième feuille de couplage
étant constituée de matériau électriquement conducteur et comprenant un motif sous
la forme d'au moins un trou débouchant (302) pour régler des propriétés de l'ensemble
résonateur.
7. Ensemble résonateur de la revendication 6, dans lequel le motif de la deuxième feuille
de couplage est différent du motif de la feuille de couplage remplaçable.
8. Ensemble résonateur d'une quelconque revendication précédente, dans lequel les articles
résonateurs céramiques et au moins une de la feuille de couplage remplaçable et de
la deuxième feuille de couplage sont alignés le long d'une ligne (A).
9. Ensemble résonateur d'une quelconque revendication précédente, dans lequel une pluralité
de feuilles de couplage (104, 110) sont disposées en couches entre deux articles résonateurs
céramiques.
10. Procédé de fabrication d'un ensemble résonateur, comprenant :
la production (500) d'un premier article résonateur céramique ayant des caractéristiques
de résonance radiofréquence déterminées ;
la production (500) d'un deuxième article résonateur céramique ayant des caractéristiques
de résonance radiofréquence déterminées ;
la production (502) d'une feuille de couplage constituée de matériau électriquement
conducteur et comprenant un motif sous la forme d'au moins un trou débouchant ; et
la fixation (504) de la feuille de couplage entre le premier article résonateur céramique
et le deuxième article résonateur céramique,
caractérisé en ce que le procédé comprend en outre :
la mesure (700) de propriétés de fréquence de l'ensemble résonateur ;
la détermination (702), sur la base des mesures, que les propriétés de fréquence doivent
être réglées ;
en réponse à ladite détermination, le remplacement (704) de la feuille de couplage
par une autre feuille de couplage.
11. Procédé de la revendication 10, comprenant en outre : le placage (602) du premier
article résonateur céramique et du deuxième article résonateur céramique avec un placage
électriquement conducteur sur tous les côtés à l'exception des côtés conçus pour faire
face à la feuille de couplage.
12. Procédé de la revendication 10 ou 11, comprenant en outre, après la fixation de la
feuille de couplage :
la mesure (700) de propriétés de fréquence de l'ensemble résonateur ;
la détermination (702), sur la base des mesures, que les propriétés de fréquence doivent
être réglées ;
en réponse à ladite détermination, le retrait (900) de matériau céramique d'un côté
d'au moins un du premier article résonateur céramique et du deuxième article résonateur
céramique qui fait face à la feuille de couplage.
13. Procédé de l'une quelconque des revendications 10 à 12 précédentes, comprenant en
outre, après la fixation de la feuille de couplage :
la mesure (700) de propriétés de fréquence de l'ensemble résonateur ;
la détermination (802), sur la base des mesures, que les propriétés de fréquence doivent
être réglées ;
en réponse à ladite détermination, la sélection (804) d'une deuxième feuille de couplage
qui comprend un motif qui règle les propriétés de fréquence d'une manière déterminée
sur la base des mesures ;
la fixation (800) de la deuxième feuille de couplage à un côté du deuxième article
résonateur céramique et d'un troisième article résonateur céramique à la deuxième
feuille de couplage.