发明名称 |
TESTING RESPONSE OF A RADIO TRANSCEIVER |
摘要 |
A radio transceiver comprising: an antenna; local oscillator for generating a local oscillator signal at a local oscillator frequency; a receiver capable of receiving a first radio frequency signal from the antenna at a receiver input and having a first mixer for mixing a signal derived from the first radio signal with the said local oscillator signal to generate an intermediate frequency signal, and a receiver output for providing an output signal dependant on the intermediate frequency signal; a transmitter capable of receiving an input signal at a transmitter input and having a second mixer for mixing a signal derived from the input signal with a local oscillator signal to generate a second radio frequency signal for transmission; a switching arrangement having a normal configuration in which the transmitter is coupled to the antenna to apply the second radio frequency signal to the antenna, and a testing configuration in which the transmitter is coupled to the receiver input to apply the second radio frequency signal to the receiver input; and a signal processor coupled to the transmitter input and the receiver output and capable of, when the switching arrangement is in the testing configuration, applying a testing signal to the transmitter input to cause the transmitter to generate a radio frequency test signal, and determining from the output signal of the receiver the response of the receive to the radio frequency test signal. |
申请公布号 |
EP1201051(A1) |
申请公布日期 |
2002.05.02 |
申请号 |
EP20000946141 |
申请日期 |
2000.07.18 |
申请人 |
CAMBRIDGE SILICON RADIO LIMITED |
发明人 |
COLLIER, JAMES, DIGBY, YARLET |
分类号 |
H04B1/40;H04B17/00;(IPC1-7):H04B17/00 |
主分类号 |
H04B1/40 |
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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