Patent ID: 6356736
Filing Date: 2002-03-12
Classification: H03D,H04B,H04N

Abstract:
An integrated circuit comprising:a variable gain amplifier (VGA) having an amplifier input to receive an input signal including a frequency corresponding to a direct broadcast satellite signal frequency range and a gain control input to receive a gain control signal, the amplifier providing a VGA output at a level controlled by the gain control signal; a frequency synthesizer to regulate an oscillator signal to desired frequency using a fixed reference frequency; a quadrature generator coupled to the variable gain amplifier and the frequency synthesizer, the quadrature generator to receive the oscillator signal and to generate inphase and quadrature components thereof; and a plurality of mixers coupled to the quadrature generator, the plurality of mixers to mix the VGA output with the inphase and quadrature components from the quadrature generator to provide inphase and quadrature components of the VGA output.