Back to results
US 2018/0019729 A1Published application
High-frequency filter, front-end circuit, and communication device
AssigneeMurata Manufacturing Co., Ltd.
InventorHideki Tsukamoto
Life of this patent
Estimating the term…
Abstract
A high-frequency filter includes a variable frequency filter, a fixed frequency filter, and switches. The variable frequency filter varies a passband in association with frequencies used in multiple communication band. The fixed frequency filter fixes a passband in association with a frequency used in a specific communication band different from the multiple communication bands. The switches are used to switch connection configuration to the variable frequency filter or the fixed frequency filter.
Claims15
A high-frequency filter comprising:
- a variable frequency filter configured to vary a passband in accordance with frequencies of a plurality of communication bands;
- a fixed frequency filter configured to fix a passband in accordance with a frequency in a fixed communication band, the fixed communication band not being one of the plurality of communication bands;
- and
- a switch configured to switch connection of the variable frequency filter or the fixed frequency filter between input and output terminals of the high-frequency filter.
1 more element
Dependencies are inferred from the claim text.