Patent ID: 6833754
Filing Date: 2004-12-21
Classification: H01P

Abstract:
A radio frequency filter for generating at least first and second predetermined radio frequency bands from a received radio frequency signal containing signals in at least the first and second radio frequency bands, the radio frequency filter including:a first resonant component for accepting the radio frequency signal via an input coupling; a second resonant component operatively coupled to the first resonant component via a first coupling; a third resonant component operatively coupled to the first resonant component via a second coupling and to the second resonant component via a third coupling; a first output operatively coupled to the second resonant component via a fourth coupling a second output operatively coupled to the third resonant component via a fifth coupling; wherein the characteristics of the couplings and the resonant components are selected such that the first predetermined radio frequency band is available at the first output and the second radio frequency band is available at the second output.