发明名称 |
Portable radio transceiver with diplexer-switch circuit for dual frequency band operation |
摘要 |
A portable radio transceiver selectively transmits and/or receives RF signals in two frequency bands and in two modes of operation. The radio transceiver selectively switches between two antennas for operating in either of the two modes, such as a handheld mode of operation using the transceiver's on-board antenna and battery, or a car mode of operation using an external antenna and battery. Either antenna can transmit and/or receive RF signals in the two frequency bands, such as PCS and cellular, for example.
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申请公布号 |
US6072993(A) |
申请公布日期 |
2000.06.06 |
申请号 |
US19970909744 |
申请日期 |
1997.08.12 |
申请人 |
SONY CORPORATION;SONY ELECTRONICS, INC. |
发明人 |
TRIKHA, PUSHP KUMAR;BERG, ROGER WILLIAM |
分类号 |
H01Q1/24;H04B1/38;H04B1/40;(IPC1-7):H04B1/44;H04B1/06;H04B1/034;H01Q11/12 |
主分类号 |
H01Q1/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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