Communications: radio wave antennas – Antennas – With coupling network or impedance in the leadin
Patent
1981-01-26
1982-09-28
Moore, David K.
Communications: radio wave antennas
Antennas
With coupling network or impedance in the leadin
343853, H01Q 1906
Patent
active
043521118
ABSTRACT:
An antenna coupling network for supplying VHF television carriers to a VHF tuner of a television receiver and weather band carriers to a tuner of a weatherband radio incorporated in the television receiver from a single monopole antenna without adverse interaction simply comprises a first wire connected between the monopole antenna and the VHF tuner and a second wire wrapped around the first wire a predetermined number of times and connected at one end to tuner of the weatherband radio. The number of turns are selected to form a series resonance at a midpoint of the weather band. Desirably the other end of the second wire is left unconnected.
REFERENCES:
patent: 1571405 (1926-02-01), Goldsmith
patent: 2619588 (1952-11-01), Nowak
patent: 2864060 (1958-12-01), Batchelor
patent: 3534371 (1970-10-01), Seavey
patent: 3725942 (1973-04-01), Ukmar
patent: 3739390 (1973-06-01), Poppe, Jr. et al.
patent: 4259673 (1981-03-01), Guretzky
"Multiplexer Channel-Separating Units Using Interdigital and Parallel-Coupled Filters", by Matthaei and Cristal, published in the IEEE Transaction on Microwave Theory and Techniques, vol. MTT 13, No. 3, May 1965.
"RCA Audio Products Service Data" for the Model RWS849-V radio publsihed by RCA Corporation, Indianapolis, IN.
Carlson David J.
Tsou Sander H. C.
Emanuel P. M.
Moore David K.
Rasmussen P. J.
RCA Corporation
Whitacre E. M.
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