US 11,799,516 B2
Radio frequency circuit and communication device
Morio Takeuchi, Nagaokakyo (JP); and Syunsuke Kido, Nagaokakyo (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto (JP)
Filed on Apr. 12, 2022, as Appl. No. 17/658,899.
Application 17/658,899 is a continuation of application No. 16/887,169, filed on May 29, 2020, granted, now 11,336,330.
Claims priority of application No. 2019-101466 (JP), filed on May 30, 2019.
Prior Publication US 2022/0239333 A1, Jul. 28, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 1/7163 (2011.01); H03F 3/19 (2006.01); H03H 9/54 (2006.01); H03H 7/01 (2006.01); H03H 9/64 (2006.01)
CPC H04B 1/71637 (2013.01) [H03F 3/19 (2013.01); H03H 7/0115 (2013.01); H03H 9/54 (2013.01); H03H 9/64 (2013.01); H03F 2200/165 (2013.01); H03F 2200/294 (2013.01); H03F 2200/451 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A radio frequency circuit, comprising:
a substrate;
a common terminal;
a first acoustic wave filter that is disposed on the substrate, is connected to the common terminal, and includes a first acoustic wave resonator;
a first LC filter that is disposed on the substrate, is connected to the common terminal via the first acoustic wave filter, and includes at least one of an inductor or a capacitor;
a second acoustic wave filter that is disposed on the substrate, is connected to the common terminal, and includes a second acoustic wave resonator;
a second LC filter that is disposed on the substrate, is connected to the common terminal via the second acoustic wave filter, and includes at least one of an inductor or a capacitor;
a first amplifier that is connected to the first LC filter and is disposed on the substrate; and
a second amplifier that is connected to the second LC filter and is disposed on the substrate,
wherein (1) the first acoustic wave filter and the second acoustic wave filter have a passband that is a communication band of New Radio (NR) less than or equal to 5 GHz, or (2) the first acoustic wave filter has a passband that is a communication band of NR less than or equal to 5 GHZ and the second acoustic wave filter has a passband that is an unlicensed band of Long Term Evolution (LTE), NR, or Wireless Local Area Network (WLAN) greater than or equal to 5 GHZ, or (3) the first acoustic wave filter and the second acoustic wave filter have a passband that is an unlicensed band of LTE, NR, or WLAN greater than or equal to 5 GHz.