Radio-frequency filter, multiplexer, radio-frequency front-end circuit, and communication device

A filter includes: a series-arm circuit; a first parallel-arm circuit connected to a node and a ground; and a second parallel-arm circuit connected to a node and the ground. The first parallel-arm circuit includes a first parallel-arm resonator, and a first switch circuit connected in series to the...

Full description

Saved in:
Bibliographic Details
Main Author Nosaka, Koji
Format Patent
LanguageEnglish
Published 02.02.2021
Subjects
AMPLIFIERS
BASIC ELECTRONIC CIRCUITRY
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
RESONATORS
TRANSMISSION
Online AccessGet full text

Cover

More Information
Summary:A filter includes: a series-arm circuit; a first parallel-arm circuit connected to a node and a ground; and a second parallel-arm circuit connected to a node and the ground. The first parallel-arm circuit includes a first parallel-arm resonator, and a first switch circuit connected in series to the first parallel-arm resonator. The second parallel-arm circuit includes a second parallel-arm resonator, and a second switch circuit connected in series to the second parallel-arm resonator. The first switch circuit includes a first switch element that includes one or more transistors. The second switch circuit includes a second switch element that includes one or more transistors. A gate width of each of the one or more transistors included in the first switch element is greater than a gate width of at least one of the one or more transistors included in the second switch element.
Bibliography:Application Number: US201916727772