Balun apparatus including impedance transformer having transform

Details Balun apparatus including impedance transformer having transform Balun apparatus including impedance transformer having transform

1994-03-11

1996-10-15

Lee, Benny

Communications: radio wave antennas

Antennas

With coupling network or impedance in the leadin

343862, 343864, 333 26, H01P 510

Patent

active

055658814

ABSTRACT:
An electrical connection between a balanced circuit, such as a radio receiver and an unbalanced circuit, such as an antenna requires a balun. In a small electronic device such as a radiotelephone, a traditional balun is impractical because of the physical constraints. The balun function is performed by using a transmission line of minimum transverse dimensions and a predetermined length between the receiver and the antenna.

REFERENCES:
patent: 3614676 (1971-10-01), Boelke
patent: 3678418 (1972-07-01), Woodward
patent: 3846721 (1974-11-01), Fritz et al.
patent: 4495505 (1985-01-01), Shields
patent: 4737797 (1988-04-01), Siwiak et al.
patent: 5030963 (1991-07-01), Tadama
patent: 5304959 (1994-04-01), Wisherd et al.
Shuhao, Hu; "The Balun Family"; Microwave Journal; Sep. 1987; pp. 227-229, Copy Available.

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