发明名称 |
Antenna selection circuit for use in mobile computers |
摘要 |
A method of selecting between first and second antennas in a quadrature amplitude modulation receiver having in-phase (I) and quadrature (Q) signal channels for demodulating signals received by the antennas, comprising the steps of imultaneously connecting the first antenna to the I channel to obtain a first output signal having a first amplitude, and the second antenna to the Q channel to obtain a second output signal having a second amplitude; measuring the first and second amplitude to obtain a greater amplitude for one on the antennas; and switching to said of the antennas having the greater amplitude for demodulating the received signals.
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申请公布号 |
US6873835(B2) |
申请公布日期 |
2005.03.29 |
申请号 |
US20020038243 |
申请日期 |
2002.01.03 |
申请人 |
SYMBOL TECHNOLOGIES, INC. |
发明人 |
KAWAGUCHI DEAN |
分类号 |
H04B7/08;(IPC1-7):H04B1/06;H04B1/44 |
主分类号 |
H04B7/08 |
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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