The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 14, 2022
Filed:
Jun. 10, 2020
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
Toshiaki Takata, Nagaokakyo, JP;
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Abstract
A multiplexer includes first and second filters and additional circuits. The first filter is coupled to transmit and antenna terminals, the second filter is coupled to receive and antenna terminals, one additional circuit is coupled to transmit and receive terminals, and another additional circuit is coupled to transmit and antenna terminals. Pass bands of the first and second filters are respectively first and second frequency bands, and the second frequency band including a center frequency higher than a center frequency of the first frequency band. The one additional circuit includes a first resonator group including first IDT electrodes aligned in a propagation direction of an acoustic wave. The other additional circuit includes a second resonator group including second IDT electrodes aligned in the propagation direction. An average pitch of electrode fingers is greater among the first IDT electrodes than the second IDT electrodes.