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US 11,901,877 B2Granted
Transversely-excited film bulk acoustic resonator matrix filters with noncontiguous passband
AssigneeMurata Manufacturing Co., Ltd.
InventorsAndrew Guyette, Neal Fenzi, Michael Eddy, Bryant Garcia
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Abstract
There are disclosed matrix filters having an input port and sub-filters connected between the input port and respective output ports. Each of the sub-filters includes a ladder circuit with n transversely-excited film bulk acoustic resonator (XBAR) series elements and n−1 capacitor shunt elements, where n, the order of the sub-filter, is an integer greater than 2. The sub-filters having noncontiguous passbands.
Claims20
A matrix filter, comprising:
- a filter input port;
- and
- two or more sub-filters connected between the filter input port and respective filter output ports, each sub-filter comprising n transversely-excited film bulk acoustic resonator (XBAR) series elements and at least one capacitor shunt element,
- wherein n is an integer greater than 2, and
- wherein the two or more sub-filters having noncontiguous passbands.
2 more elements
A filter, comprising:
- a first filter port and a second filter port;
- and
- n sub-filters, where n is an integer greater than one, each of the n sub-filters having a first sub-filter port connected to the first filter port and a second sub-filter port connected to the second filter port;
- wherein each sub-filter of the n sub-filters comprises at least three transversely-excited film bulk acoustic resonator (XBAR) series elements and at least one capacitor shunt element, and
- wherein the n sub-filters have noncontiguous passbands.
2 more elements
A three-band diversity receiver, comprising:
- a matrix triplexer coupled between and antenna and three receivers, the triplexer comprising;
- a first sub-filter coupled between a first filter port and a second filter port coupled to a first receiver of the three receivers;
- a second sub-filter coupled between the first filter port and a third filter port coupled to a second receiver of the three receivers;
- a third sub-filter coupled between the first filter port and a fourth filter port coupled to a third receiver of the three receivers;
- wherein each sub-filter comprises at least three transversely-excited film bulk acoustic resonator (XBAR) series elements and at least one capacitor shunt element;
- and wherein the first, second and third sub-filters each have a noncontiguous passband.
3 more elements
Dependencies are inferred from the claim text.