US 12,328,130 B2
Radio frequency module and communication device
Kensuke Takimoto, Kyoto (JP); and Yoshihiro Yoshimura, Kyoto (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto (JP)
Filed on Nov. 8, 2022, as Appl. No. 18/053,431.
Application 18/053,431 is a continuation of application No. PCT/JP2021/019444, filed on May 21, 2021.
Claims priority of application No. 2020-102570 (JP), filed on Jun. 12, 2020.
Prior Publication US 2023/0063118 A1, Mar. 2, 2023
Int. Cl. H04B 1/00 (2006.01)
CPC H04B 1/006 (2013.01) [H04B 1/0028 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A radio frequency module, comprising:
a switch configured to selectively change between a transmission path of a transmission signal and a reception path of a reception signal in communication based on a time division duplex system;
a reception filter at a stage subsequent to the switch, the reception filter being configured to pass the reception signal in a predetermined frequency band;
a low-noise amplifier configured to amplify the reception signal that has passed through the reception filter; and
a filter between an antenna terminal and the switch, at a stage preceding the switch in the reception path,
wherein the filter is configured to attenuate a signal in a second frequency band, the second frequency band being lower than the predetermined frequency band.