Patent ID: 7449979
Filing Date: 2008-11-11
Classification: H01P

Abstract:
1. A resonator assembly comprising: a first wafer; at least one pit etched in said first wafer; a second wafer coupled to said first wafer; at least one pit etched in said second wafer; a third wafer coupled to said second wafer; a layer of metal disposed on at least one of said first wafer, said second wafer, and said third wafer; a transmission line which carries an input signal; an input structure which enables the input signal to be introduced into at least one cavity from said transmission line and which comprises an aperture formed in said layer of metal disposed on at least one of the first wafer, second wafer, and third wafer; and a plurality of via holes surrounding the aperture formed in the layer of metal; wherein said at least one pit etched in said first wafer and said at least one pit etched in said second wafer are arranged so as to form said at least one cavity.