Wave transmission lines and networks – Plural channel systems – Having branched circuits
Patent
1995-04-13
1997-02-18
Gensler, Paul
Wave transmission lines and networks
Plural channel systems
Having branched circuits
333129, 333134, 455 82, 455 83, 455 84, H01P 1213, H04B 150
Patent
active
056044704
ABSTRACT:
A duplexer usable for both transmission and reception in a mobile communication apparatus such as a car phone has both its transmission section and reception section mounted on a single substrate. The transmission section is connected between an input terminal and an antenna terminal and includes an isolator and either a circuit having only inductors and capacitors or a trap circuit having a dielectric resonator and an inductor and a II-type low-pass filter having an inductor and capacitors. The reception section is comprised of a filter using dielectric resonators.
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patent: 5015973 (1991-05-01), Kawakami et al.
patent: 5023866 (1991-06-01), De Muro
patent: 5068629 (1991-11-01), Nishikawa et al.
patent: 5293141 (1994-03-01), Kobayashi et al.
Patent Abstract of Japan: vol. 4, No. 189 JP-A55-132103 (Shimada Rika Kogyo K.K.) 14 Oct., 1980.
Patent Abstract of Japan: vol. 17 No. 128 JP-A04-304003 (Murata Mfg Co. Ltd) 27 Oct., 1992.
Patent Abstract of Japan: vol. 15 No. 219 JP-A03-062626 (NEC Corp.) 18 Mar., 1991.
Patent Abstract of Japan: vol. 11 No. 51 JP-A61-214625 (Tokyo Electric Co Ltd.) 24 Sep., 1986.
Gensler Paul
Murata Manufacturing Co. Ltd.
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