Patent ID: 11929733
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A matrix filter diplexer, comprising:
a receive matrix filter coupled between a receive port and an antenna port; and
a transmit matrix filter coupled between the antenna port and a transmit port, wherein:
an impedance at the receive port is matched to an input impedance of a low noise amplifier (LNA),
an impedance at the transmit port is matched to an output impedance of a power amplifier (PA), and
an impedance at the antenna port is matched to an impedance of an antenna, and

wherein the receive and the transmit matrix filters each include two or more sub-filters the each comprise a ladder circuit with a plurality of transversely-excited film bulk acoustic resonator (XBAR) series elements and a plurality of capacitor shunt elements that are each connected between ground and a node between a respective pair of XBAR series elements.