EP 0452211 A1 19911016 - High frequency filter arrangement comprising at least one filter with variable frequency.
Title (en)
High frequency filter arrangement comprising at least one filter with variable frequency.
Title (de)
Hochfrequenz-Filteranordnung mit mindestens einem frequenzvariabelen Filter.
Title (fr)
Arrangement de filtre haute fréquence comportant au moins un filtre à fréquence variable.
Publication
Application
Priority
FR 9004747 A 19900412
Abstract (en)
The invention relates to a high-frequency filter arrangement which includes at least one filter with variable frequency. Such a filter is of the type comprising a metal housing (1), a resonator body (10) of a dielectric material, two support bodies (11, 12) in a material with low thermal resistance, aligned coaxially with the resonator body and arranged on either side of it, in contact via their inner axially frontal faces with the upper and lower frontal faces of the resonator body (10), and a device for frequency variation including a cylindrical body (15) made of a dielectric material forming a plunger which can move axially in the aligned axial bores (14) passing through the resonator (10) and support (11, 12) bodies. The arrangement is characterised in that the outer diameters of the support bodies (11, 12) are chosen to compensate for the frequency drift coefficient of the resonator body (10), the height of the support bodies being kept substantially constant. The invention can be used for filters with dielectric resonator. <IMAGE>
IPC 1-7
IPC 8 full level
H01P 1/208 (2006.01)
CPC (source: EP)
H01P 1/2084 (2013.01)
Citation (search report)
- [X] US 4661790 A 19870428 - GANNON MARK A [US], et al
- [Y] WO 8700350 A1 19870115 - FORD AEROSPACE & COMMUNICATION [US]
- [A] US 4019161 A 19770419 - KIMURA KATSUHIRO, et al
- [A] US 4521746 A 19850604 - HWAN EUGENE J [US], et al
- [A] EP 0114140 A1 19840725 - THOMSON CSF [FR]
- [Y] 1985 IEEE-MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST, St. Louis, 4-6 juin 1985, pages 473-476, IEEE, New York, US; P. WHELESS et al.: "The use of higher resonant modes in measuring the dielectric constant of dielectric resonators"
- [A] PROCEEDINGS OF THE 42ND ANNUAL FREQUENCY CONTROL SYMPOSIUM 1988, Baltimore, 1-3 juin 1988, pages 263-273, IEEE, New York, US; M.J. LOBODA et al.: "Temperature sensitivity of dielectric resonators and dielectric resonator oscillators"
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0452211 A1 19911016; FI 911760 A0 19910411; FI 911760 A 19911013; FR 2661042 A1 19911018; FR 2661042 B1 19920814; NO 911416 D0 19910411; NO 911416 L 19911014
DOCDB simple family (application)
EP 91400954 A 19910409; FI 911760 A 19910411; FR 9004747 A 19900412; NO 911416 A 19910411