US 12,294,405 B2
Radio-frequency circuit, radio-frequency front-end circuit, and communication apparatus
Masakazu Tani, Kyoto (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto (JP)
Filed on May 3, 2022, as Appl. No. 17/661,771.
Application 17/661,771 is a continuation of application No. PCT/JP2020/029779, filed on Aug. 4, 2020.
Claims priority of application No. 2019-210025 (JP), filed on Nov. 20, 2019.
Prior Publication US 2022/0263535 A1, Aug. 18, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 1/40 (2015.01)
CPC H04B 1/40 (2013.01) 10 Claims
OG exemplary drawing
 
1. A radio-frequency circuit comprising:
an antenna terminal;
a first switch connected to the antenna terminal;
a second switch connected to the first switch and connected to the antenna terminal via the first switch;
a first filter, which is an acoustic wave filter that is connected to the first switch without having the second switch interposed therebetween and that is configured to pass a radio-frequency signal of a first communication band;
a second filter, which is an acoustic wave filter that is connected to the first switch via the second switch and that is configured to pass a radio-frequency signal of a second communication band, the second communication band being higher in frequency than the first communication band; and
an inductor that is not connected in series with the first filter, but that is connected in series with the first switch and the second switch between the first switch and the second switch.