Communications: radio wave antennas – Antennas – With lumped reactance for loading antenna
Patent
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
Hille Rolf
Le Hoang Anh
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