Wave transmission lines and networks – Coupling networks – Nonreciprocal gyromagnetic type
Patent
1985-03-27
1986-11-04
Nussbaum, Marvin L.
Wave transmission lines and networks
Coupling networks
Nonreciprocal gyromagnetic type
333 24C, 333219, 333222, 343715, H01P 502, H01P 700, H01Q 127
Patent
active
046212434
ABSTRACT:
A transmission channel coupler for an antenna including two resonators, each resonator being formed with a helical conductor and an outer conductor which is disposed outside of the helical conductor by sharing the same axis with the helical conductor. One end of the helical conductor is electrically connected to the inner wall of the outer conductor, and the other end of the helical conductor is connected to a printed circuit board mounted at the end of the outer conductor so that the helical conductor is positioned inside the outer conductor. The resonators are coaxially mounted on the either side of a glass such as the rear window of a car, window of a building, etc. By means of the structure above, high frequency signals are transmitted through an insulating material, that is, the glass, without damaging it. Also, the coupler can be manufactured small in size and provides excellent frequency characteristics with less transmission loss.
REFERENCES:
patent: 2829367 (1958-04-01), Rychlik
patent: 3939443 (1976-02-01), Biro et al.
patent: 4238799 (1980-12-01), Parfitt
Harada Kogyo Kabushiki Kaisha
Nussbaum Marvin L.
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