Transversal mode resonator filter system, has reduced active finger overlap of resonators adjacent to coupling point associated with TMR filters for coupling point impedance matching

摘要

The filter arrangement is implemented on a chip and contains an input region (E) with one or more electrically parallel transversal mode resonator or TMR input filters (EA,EB) and an output region (A) with one or more parallel TMR output filters. The input and output regions are electrically connected in series via a coupling point (K) and have different numbers of filters. The input impedance differs from the output impedance. Active finger overlap of at least one resonator (R2EA,R1EB) adjacent to the coupling point and associated with one of the TMR filters is reduced for impedance matching at the coupling point