Apparatus and method for matching radiator and feedline impedanc

Details Apparatus and method for matching radiator and feedline impedanc Apparatus and method for matching radiator and feedline impedanc

1988-12-12

1990-07-10

Hille, Rolf

Communications: radio wave antennas

Antennas

With lumped reactance for loading antenna

343791, 343792, H01Q 940

Patent

active

049409891

ABSTRACT:
A method of feeding a high impedance point of an antenna, such as the end of a 1/2 wave radiator. A resonant cavity is used for making an impedance match between the antenna and the feed line and forming a decoupling mechanism for forming the high impedance. Simultaneously, the cavity choke is formed with the open end facing toward the feed point for allowing a feed point impedance transformation between the feed line and the high impedance at the end of the 1/2 wave element and forming a high impedance point by its resonance for preventing the feed from flowing down along the outer surface of the choke and feed line.

REFERENCES:
patent: 3588903 (1971-06-01), Hampton
patent: 4509056 (1985-04-01), Ploussios

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