Communications: radio wave antennas – Antennas – Spiral or helical type
Patent
1996-06-19
1998-01-06
Hajec, Donald T.
Communications: radio wave antennas
Antennas
Spiral or helical type
343702, H01Q 136
Patent
active
057060193
ABSTRACT:
Strips (220) of thin metallic material forming pairs of arms on an elongated dielectric tube (110) form a radiator portion of an antenna assembly. A first radiator plate (310) and a second radiator plate (320) are capacitively coupled to respective hot capacitive plate (270) and ground capacitive plate (280) on opposite sides of the dielectric tube and formed in a single etching step to improve manufacturability, reliability and cost of a radio.
REFERENCES:
patent: 3599220 (1971-08-01), Dempsey
patent: 3945014 (1976-03-01), Kunert et al.
patent: 3946397 (1976-03-01), Irwin
patent: 4238800 (1980-12-01), Newington
patent: 5014346 (1991-05-01), Phillips et al.
patent: 5191352 (1993-03-01), Branson
patent: 5346300 (1994-09-01), Yamamoto et al.
patent: 5349365 (1994-09-01), Ow et al.
patent: 5612707 (1997-03-01), Vaughan et al.
Darden, IV William Herbert
Thill Kevin Michael
Hajec Donald T.
Juffernbruch Daniel W.
Motorola Inc.
Phan Tho
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