Active receiving antenna

Details Active receiving antenna Active receiving antenna

1997-07-14

1999-05-18

Wong, Don

Communications: radio wave antennas

Antennas

Slot type

343712, 343767, 343789, H01Q13/12

Patent

active

059054719

ABSTRACT:
An active receiving antenna for vehicles, including a slot-shaped antenna cut into the metallic vehicle body, and having small-depth cavity filled with a dielectric material which closes off the antenna toward the back or interior of the vehicle. A low-noise preamplifier, which is integrated into the dielectric material, is connected to the antenna via two feed lines of different length. The desired polarizations of the received signals are set via this preamplifier, which can be changed over and be switched off.

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patent: 4821040 (1989-04-01), Johnson et al.
patent: 5194876 (1993-03-01), Schnetzer et al.
patent: 5239669 (1993-08-01), Mason et al.
patent: 5471664 (1995-11-01), Kim
patent: 5489913 (1996-02-01), Raguenet et al.
patent: 5539420 (1996-07-01), Dusseux et al.
patent: 5714961 (1998-02-01), Kot et al.
Pozar, D.M.: "A Reciprocity Method of Analysis for Printed Slot and Slot-Coupled Microstrip Antennas", IEEE Transactions on Antennas and Propagation, vol. Ap-34, No. 12, Dec. 1986, pp. 1439-to 1446.
Bashir et al., "Flache Kombiantenne fur GSM und GPS", Funkschau, Feb. 1995, pp. 60-62.

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