| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a wireless circuit device which can reduce mixed modulation disturbance caused by the leakage of a transmitting signal. <P>SOLUTION: The wireless circuit device includes a transmitting base band circuit (12) for outputting a transmitting signal, a receiving circuits (14, 15) for inputting receiving signals as differential RF signals, an envelope signal generation circuit (24) which generates an envelope signal of a squared envelope signal of the RF transmitting signal transmitted from the base band circuit (12), an envelope signal control circuit (20) which outputs a control signal for controlling an amplitude and a delay time of the envelope signal, and an envelope signal pouring circuit (23) which controls the amplitude and the delay time of the envelope signal corresponding to the control signal outputted by the envelope signal control circuit (20) and injects the controlled envelope signal into the differential RF signal of the receiving circuits (14, 15) at the same phase, respectively. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
