Communications: radio wave antennas – Antennas – Spiral or helical type
Patent
1995-08-09
1998-08-11
Hajec, Donald T.
Communications: radio wave antennas
Antennas
Spiral or helical type
333 26, H01Q 136
Patent
active
057933383
ABSTRACT:
A quadrifilar antenna is comprised of four radiators which, in the preferred embodiment, are etched onto a radiator portion of a microstrip substrate. The microstrip substrate is formed into a cylindrical shape such that the radiators are helically wound. Also etched onto the microstrip substrate is a feed network that provides 0.degree., 90.degree., 180.degree. and 270.degree. signals to the antenna radiators. The feed network utilizes a combination of one or more branch line couplers and one or more power dividers to accept an input signal from a transmitter and to provide therefrom the 0.degree., 90.degree., 180.degree. and 270.degree. signals needed to drive the antenna. For receive operations, the feed network utilizes these same components to receive the 0.degree., 90.degree., 180.degree. and 270.degree. signals from the antenna radiators and to provide a single output signal to a communications receiver. The power divider accepts an input signal and provides therefrom two output signals differing from each other in phase by 180.degree.. The branch line coupler accepts an input signal and provides therefrom two output signals differing from one another in phase by 90.degree..
REFERENCES:
patent: 3423688 (1969-01-01), Seidel
patent: 3641578 (1972-02-01), Spanos et al.
patent: 3678418 (1972-07-01), Oakley et al.
patent: 3838364 (1974-09-01), Kurokawa
patent: 4673897 (1987-06-01), Chua et al.
patent: 4849767 (1989-07-01), Naitou
patent: 4896123 (1990-01-01), Taub
patent: 4935747 (1990-06-01), Yuichi et al.
patent: 4961061 (1990-10-01), Cruchon et al.
patent: 5041842 (1991-08-01), Blaese
patent: 5134422 (1992-07-01), Auriol
patent: 5138331 (1992-08-01), Josypenko
patent: 5191352 (1993-03-01), Branson
patent: 5298910 (1994-03-01), Takei et al.
patent: 5317327 (1994-05-01), Piole
patent: 5329287 (1994-07-01), Strickland
patent: 5345248 (1994-09-01), Hwang et al.
patent: 5355104 (1994-10-01), Wolfson et al.
patent: 5359340 (1994-10-01), Yokota
patent: 5370677 (1994-12-01), Rudie et al.
patent: 5444455 (1995-08-01), Louzir et al.
Randolph W. Bricker, Jr., "A Shaped-Beam Antenna for Satellite Data Communication", Institute of Electrical and Electronics Engineers, 11-15 Oct., 1976, pp. 121-126.
Standke Randolph E.
Thompson James H.
Hajec Donald T.
Miller Russell B.
Ogrod Gregory D.
Phan Tho
Qualcomm Incorporated
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