Patent ID: 7783263

Claim:
A transceiver for time-domain duplexed (TDD) communications comprising: a baseband processor; digital predistortion (DPD) circuit that is coupled to the baseband processor; a digital-to-analog converter (DAC) that is coupled to the DPD circuitry; a local oscillator; a first mixer that is coupled to the DAC and the local oscillator; a power amplifier that is coupled to the mixer; receiver circuitry that is coupled to the power amplifier, wherein receiver circuitry includes a filter; a second mixer that is coupled to the local oscillator and at least a portion of the receiver circuitry; an analog-to-digital converter (ADC) that is coupled to the second mixer, the baseband processor, and the DPD circuitry, wherein the filter is coupled between the second mixer and the ADC; and a switch that is substantially in parallel to at least a portion of the receiver circuitry between the power amplifier and the ADC, wherein the switch is actuated so as to provide an output from the power amplifier to the ADC during transmit periods of a TDD cycle, and wherein the switch is actuated so as to isolate the output from the ADC during receive periods of the TDD cycle.