Multi-frequency antenna

Details Multi-frequency antenna Multi-frequency antenna

1989-12-19

1991-06-18

Wimer, Michael C.

Communications: radio wave antennas

Antennas

With vehicle

343901, H01Q 1100, H01Q 1320, H01Q 9000

Patent

active

050252631

ABSTRACT:
A multi-frequency antenna to be used commonly for reception of multiple different frequencies includes first and second rods extendably held by and through a third rod. The first rod is coupled to the second rod via a phase shifter so that when the first and second rods are fully extended, the antenna behaves as a high gain antenna for common use in an AM, FM and car telephone system.

REFERENCES:
patent: 4353075 (1982-10-01), Edwards
patent: 4464664 (1984-08-01), Edwards
patent: 4527168 (1985-07-01), Edwards
patent: 4675687 (1987-06-01), Elliot
patent: 4725846 (1988-02-01), Hendershot
patent: 4748450 (1988-05-01), Hines et al.
patent: 4764773 (1988-08-01), Larsen et al.
patent: 4829317 (1989-05-01), Shinkawa

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