US 12,250,012 B2
Radio-frequency circuit
Hirotsugu Mori, Nagaokakyo (JP); and Satoshi Tanaka, Nagaokakyo (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Nagaokakyo (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Jan. 17, 2023, as Appl. No. 18/155,073.
Application 18/155,073 is a continuation of application No. PCT/JP2021/022143, filed on Jun. 10, 2021.
Claims priority of application No. 2020-124257 (JP), filed on Jul. 21, 2020.
Prior Publication US 2023/0163791 A1, May 25, 2023
Int. Cl. H04B 1/00 (2006.01); H04B 1/16 (2006.01)
CPC H04B 1/0057 (2013.01) [H04B 1/0078 (2013.01); H04B 1/1615 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A radio-frequency circuit comprising:
a first switch connected to an antenna connecting terminal;
a first filter that has a pass band corresponding to a first sub-band and that is configured to be switchably connected to the antenna connecting terminal via the first switch, the first sub-band being included in a first band of a time division duplex (TDD) communication system;
a second filter that has a pass band corresponding to a second sub-band included in the first band, the second filter configured to be switchably connected to the antenna connecting terminal via the first switch, there being a gap between the first sub-band and the second sub-band; and
a third filter that has a pass band corresponding to a third sub-band and that is configured to be switchably connected to the antenna connecting terminal via the first switch, the third sub-band including the first sub-band, the second sub-band, and the gap.