Patent ID: 6137999
Filing Date: 2000-10-24
Classification: H03D,H04B

Abstract:
An image reject transceiver, comprising:a transmitter voltage controlled oscillator supplying an oscillator signal at an output;a first switch having a first terminal coupled to the output of the transmitter voltage controlled oscillator and a control terminal coupled for receiving a signal; anda receiver having an input coupled to a second terminal of the first switch, the receiver includesa first phase shift circuit having a first input coupled to the input of the receiver,a phase detector circuit having a first input coupled to the input of the receiver and a second input coupled to an output of the first phase shift circuit, anda second switch having a control terminal coupled to the control terminal of the first switch, a first terminal coupled to an output of the phase detector circuit, and a second terminal coupled to a second input of the first phase shift circuit.