Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1994-11-02
1996-07-02
Hajec, Donald T.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343713, 343817, H01Q 1930
Patent
active
055327095
ABSTRACT:
The invention uses a modified Yagi-Uda antenna as a directional antenna for remote entry applications for transportation vehicles. To reduce the area that the antenna requires for packaging in a vehicle headliner, the antenna employs a shared reflector for plural reception zones on opposite sides of the vehicle. Since the antenna is packaged close to body sheet metal, a folded dipole is used as the antenna feed element to increase input impedance and simplify impedance matching with the receiver.
REFERENCES:
patent: 2490777 (1949-12-01), Bryant et al.
patent: 2841787 (1958-07-01), Knott
patent: 4097868 (1978-06-01), Borowick
patent: 4184400 (1980-01-01), Cermignani et al.
patent: 4514734 (1985-04-01), Cermignani et al.
patent: 4536752 (1985-08-01), Cheal et al.
patent: 4719460 (1988-01-01), Takeuchi et al.
patent: 4727377 (1988-02-01), Yotsuya et al.
patent: 4763121 (1988-08-01), Tomoda et al.
patent: 4812855 (1989-03-01), Coe et al.
patent: 4978963 (1990-12-01), Thorpe
patent: 5008681 (1991-04-01), Cavallaro et al.
patent: 5061944 (1991-10-01), Powers et al.
patent: 5337066 (1994-08-01), Hirata et al.
Encyclopedia of Electronics and Computers, Sybil P. Parker, 1984, pp. 930-931.
Ford Motor Company
Hajec Donald T.
Mollon Mark
Phan Tho G.
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