Patent ID: 6696885
Filing Date: 2004-02-24
Classification: H03H

Abstract:
A polyphase filter for generating I and Q output signals from first and second output nodes comprising:a first and a second input for connecting to first and second input signals opposed in phase which are used to produce the I and Q signals; the first input being coupled to a first load resistance with the first output node being located between one end of the first load resistance and the first input; the second input being coupled to a second load resistance with the second output node being located between one end of the second load resistance and the second input; at least one capacitor and at least one inductor coupled together and one end of the at least one inductor being coupled to one of the first and second output nodes and one end of the at least one capacitor being coupled to another end of the first and second output nodes; and wherein the capacitors and the inductors are integrated into an integrated circuit.