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GAIN MEASUREMENT CIRCUIT, GAIN MEASUREMENT METHOD AND COMMUNICATION DEVICE
GAIN MEASUREMENT CIRCUIT, GAIN MEASUREMENT METHOD AND COMMUNICATION DEVICE
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机译：增益测量电路，增益测量方法和通信装置
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摘要
PROBLEM TO BE SOLVED: To provide gain measurement circuit, gain measurement method and communication device, capable of measuring a receiver gain at low cost without using an external measurement instrument such as a spectrum analyzer.;SOLUTION: The gain measurement circuit includes: a frequency mixer 12 for receiving a reception signal RX and mixing it with a local signal LO from an oscillator 3, to output an intermediate frequency signal IF; and a phase controller 14 for extracting a portion of signal of the local signal to set a different phase thereto and to output as the reception signal RX. To the different phase set by the phase controller, a DC voltage in the intermediate frequency signal output from the frequency mixer 12 is detected, and the gain of the receiver is calculated by obtaining a conversion gain of the frequency mixer 12.;COPYRIGHT: (C)2013,JPO&INPIT
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