Patent ID: 7366478

Claim:
A radio-frequency (RF) apparatus, comprising: a low-noise amplifier (LNA) configured to receive a radio-frequency signal (RF) and to provide an amplified radio-frequency (RF) signal; a complex down-converter coupled to the low-noise amplifier (LNA), the complex down-converter configured to convert the amplified radio-frequency (RF) signal to generate an in-phase signal and a quadrature signal; a first programmable-gain amplifier (PGA) coupled to the complex down-converter, the first programmable-gain amplifier (PGA) configured to amplify the in-phase signal with a first programmable gain to generate an amplified in-phase signal; a second programmable-gain amplifier (PGA) coupled to the complex down-converter, the second programmable-gain amplifier (PGA) configured to amplify the quadrature signal with a second programmable gain to generate an amplified quadrature signal; and a complex analog-to-digital converter (ADC) coupled to the first and second programmable gain amplifiers (PGAs), the analog-to-digital converter (ADC) configured to convert the amplified in-phase signal to a one-bit in-phase digital signal, the analog-to-digital converter (ADC) further configured to convert the amplified quadrature signal to a one-bit quadrature digital signal.