Antenna with integral transmission line section

Details Antenna with integral transmission line section Antenna with integral transmission line section

1993-10-25

1995-09-05

Wimer, Michael C.

Communications: radio wave antennas

Antennas

With radio cabinet

343791, 343828, 343829, 343861, H01Q 124, H01Q 938

Patent

active

054482534

ABSTRACT:
An antenna (105) for receiving radio frequency (RF) signals includes a conductive element (300) having a first electrical length and a first operating impedance and a transmission line (315) having a second electrical length and a second operating impedance for resonating the conductive element (300) at a predetermined operating frequency. A coaxial element (305) having a third electrical length is coupled to the conductive element (300) and the transmission line element (315) for converting the first operating impedance to the second operating impedance. When the conductive element (300) is resonated, the first, second, and third electrical lengths are substantially equal to a quarter wavelength or an odd multiple thereof at the predetermined operating frequency.

REFERENCES:
patent: 2486597 (1949-11-01), Greene
patent: 3981017 (1976-09-01), Kommrusch
patent: 4814776 (1989-03-01), Caci et al.
patent: 4862181 (1989-08-01), Ponce de Leon et al.
patent: 5113196 (1992-05-01), Ponce de Leon et al.
"Reference Data for Radio Engineers", copyright 1968, 1975 by Howard W. Sams and Co., Inc, pp. 24-18, 24-17.
"The ARRL Antenna Book", copyright 1988 by The American Radio Relay League, pp. 16-21-16-26.

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