EP 0386678 B1 19941207 - Active vehicle receiving antenna, its antenna conductor being provided on or in a non-conductive surface inserted in a metallic vehicle body.
Title (en)
Active vehicle receiving antenna, its antenna conductor being provided on or in a non-conductive surface inserted in a metallic vehicle body.
Title (de)
Aktive Fahrzeug-Empfangsantenne, deren Antennenleiter auf oder in einer in eine metallische Fahrzeugkarosserie eingesetzten nichtleitfähigen Fläche angebracht sind.
Title (fr)
Active antenne réceptrice d'un vehicule, dont le conducteur d'antenne étant placé sur ou dans une surface non-conductrice installéé dans une carosserie métallique.
Publication
Application
Priority
DE 3907493 A 19890308
Abstract (en)
[origin: EP0386678A1] The arrangement relates to an active receiving antenna for frequencies up to the UHF waveband in a non-conductive surface (1, 12), which is inserted into a metallic vehicle body (2), having an antenna conductor (3a), fitted onto or into the non-conductive surface, having an antenna conductor connection (11) and an antenna connecting point, one terminal of which is connected in a low- impedance manner (in terms of radio frequencies) to an earth point (10) on the conductive bodywork. <??>An active four-pole network (5) is present which has a first and a second input connection (6a and 6b) and a first and second output connection (7a and 7b). In addition, there is an output line (8) which consists of a first (14) and a second (15) section, the output line (8) being connected to the output connections (7a and 7b) of the active four-pole network and the antenna conductor connection (4a) of the antenna conductor (3a) being connected in as short a manner as possible to the first input connection (6a) of the active four-pole network (5), and the other input connection (6b) of the active four- pole network being connected in as short a manner as possible to the output connection (7b) of the active four-pole network. <??>In the first section (14), the output line (8) is led to the antenna connection point (11) with the earth point (10), which is located on the conductive bodywork (2). The conductor of the output line (8), which is connected to the second output connection (7b) of the active four-pole network (5), is in this case connected to the earth point (10) in a radio-frequency conductive manner. The necessary length (20) of the output line (8) in the first section (14) for bridging over the distance between the output of the active four-pole network and the antenna connection point with the earth point (10) cannot be ignored from the radio-frequency point of view. The second section (15), which directly adjoins the first section (14), of the output line (8) leads to the receiver (39). <IMAGE>
IPC 1-7
IPC 8 full level
H01Q 1/12 (2006.01); H01Q 23/00 (2006.01)
CPC (source: EP US)
H01Q 1/1271 (2013.01 - EP US); H01Q 23/00 (2013.01 - EP US)
Designated contracting state (EPC)
DE ES FR GB IT SE
DOCDB simple family (publication)
EP 0386678 A1 19900912; EP 0386678 B1 19941207; DE 3907493 A1 19900920; DE 59007896 D1 19950119; ES 2067578 T3 19950401; US 5138330 A 19920811; US 5289197 A 19940222
DOCDB simple family (application)
EP 90104209 A 19900305; DE 3907493 A 19890308; DE 59007896 T 19900305; ES 90104209 T 19900305; US 49076790 A 19900308; US 89949292 A 19920616