Surface Acoustic Wave Resonators With Interdigital Transducers Of Differing Duty Factor and Pitch

A multiplexer system, comprising:

• a receive port;
• a transmit port;
• an antenna port;
• and
• a plurality of filters in communication with the receive port, the transmit port, and the antenna port, wherein a first filter of the plurality of filters includes a surface acoustic wave (SAW) resonator comprising an interdigital transducer including a plurality of electrodes, wherein the interdigital transducer comprises:
• a first section with a first electrode width and a first electrode pitch corresponding to a fundamental resonant frequency and a first higher order resonant frequency;
• and
• a second section with a second electrode width and a second electrode pitch corresponding to the fundamental resonance frequency and a second higher order resonant frequency different from the first higher order resonant frequency.

An interdigital transducer (IDT), comprising:

• a plurality of sections, wherein each section of plurality of sections corresponds to:
• a different period;
• and
• a different electrode width;
• wherein the period and electrode of the plurality of sections is varied according to an inverse relationship such that sections of increased electrode width correspond to decreased period.