Patent ID: 6653885
Filing Date: 2003-11-25
Classification: H01L,H03D

Abstract:
A single chip RF mixing device, comprising:first and second MOS transistors, wherein said first and second MOS transistors operate as unbiased transistors; a first balun circuit comprising a first input port for receiving a local oscillator (LO) signal, a first output port for providing a first signal to a gate of said first MOS transistor and a second output port for providing a second signal to a gate of said second MOS transistor, said first balun circuit further comprising a first plurality of inductors and a first plurality of capacitors, wherein said first balun circuit is an unbiased balun; and an RF input port for providing an RF input signal to sources of said first and second MOS transistors; wherein said first and second MOS transistors, said first plurality of inductors, and said first plurality of capacitors are integrated in a silicon-on-insulator substrate within a single chip so as to provide a single chip RF mixing device having a conversion loss of less than approximately 7 dB.