H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 1/48 (2006.01) H01Q 1/24 (2006.01) H04B 1/18 (2006.01) H04B 1/40 (2006.01)
Patent
CA 2077500
A radio transceiver having an improved impedance matching characteristics between a rod-like antenna and transmitting and receiving portions thereof. An impedance matching circuit is provided between the antenna and a duplexer to impedance-match therebetween at a frequency within a desired signal frequency band. A transmitting signal and a receiving signal may have substantially different frequencies in which case the impedance matching circuit operates preferrably at center frequencies of these signals, respectively. The impedance matching circuit includes a first inductor inserted between the antenna and the duplexer, a first capacitor inserted between the antenna and ground potential and a parallel resonance circuit composed of a parallel circuit of a second capacitor and a second inductor inserted between the duplexer and ground potential.
Iwasaki Hiroyuki
Yokoyama Yukio
Corporation Nec
G. Ronald Bell & Associates
LandOfFree
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