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QUADRATURE PHASE DETECTOR CIRCUIT, QUADRATURE PHASE CORRECTOR, MULTI-ANTENNA RADIO CIRCUIT, RADIO STATION AND METHOD
QUADRATURE PHASE DETECTOR CIRCUIT, QUADRATURE PHASE CORRECTOR, MULTI-ANTENNA RADIO CIRCUIT, RADIO STATION AND METHOD
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机译:正交相检测器电路,正交相校正器,多天线无线电电路,无线电站和方法
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摘要
A quadrature phase detector circuit for a multi-antenna radio circuit comprising a plurality of frequency synthesizers using a common reference oscillator signal is disclosed. The quadrature phase detector comprises a first circuit arranged to collect a first state value indicating an inner state of a first quadrature signals generating frequency divider circuit of a first frequency synthesizer of the plurality of frequency synthesizers and a second state value indicating an inner state of a second quadrature signals generating frequency divider circuit of a second frequency synthesizer of the plurality of frequency synthesizers, a second circuit arranged to determine from the first state value and the second state value whether quadrature signals of the first frequency synthesizer and quadrature signals of the second frequency synthesizer are in-phase or out-of-phase, and a third circuit arranged to provide an output signal indicating whether the quadrature signals of the first frequency synthesizer and the quadrature signals of the second frequency synthesizer are in-phase or out-of-phase.
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