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High Frequency receiver, integrated circuit used therefor, portable equipment using them, transmitter used therefor, and manufacturing method thereof
High Frequency receiver, integrated circuit used therefor, portable equipment using them, transmitter used therefor, and manufacturing method thereof
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机译:高频接收器,其使用的集成电路,使用它们的便携式设备,其使用的发送器及其制造方法
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摘要
A high frequency receiver capable of stably canceling interference by a transmission signal even if a transmission signal input from a TV antenna is changed. Phase shifter (212) for changing a phase of an interfering distributed transmission signal, detector (216) for detecting a level of a transmission signal included in a receive signal input via an antenna, and level regulator (213) for changing a level of the distributed transmission signal in accordance with this level are provided. A signal input via level regulator (213) and phase shifter (212) and a receive signal are synthesized to be input into mixer (206). Since a transmission signal can be cancelled even if a transmission signal input from an antenna is changed, a high frequency receiver can receive a signal stably when a transmission signal is changed.
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