US 11,916,520 B2
Transceiver circuit
Satoshi Tanaka, Kyoto (JP); Kiichiro Takenaka, Kyoto (JP); Satoshi Arayashiki, Kyoto (JP); and Satoshi Sakurai, Kyoto (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto (JP)
Filed on Jun. 3, 2022, as Appl. No. 17/805,277.
Application 17/805,277 is a continuation of application No. 16/867,699, filed on May 6, 2020, granted, now 11,356,064.
Claims priority of application No. 2019-087379 (JP), filed on May 7, 2019.
Prior Publication US 2022/0294395 A1, Sep. 15, 2022
Int. Cl. H03F 1/07 (2006.01); H03F 1/02 (2006.01); H03F 3/21 (2006.01); H03F 3/24 (2006.01); H03F 3/195 (2006.01); H04B 1/44 (2006.01); H04B 1/04 (2006.01)
CPC H03F 1/0288 (2013.01) [H03F 3/195 (2013.01); H03F 3/211 (2013.01); H03F 3/245 (2013.01); H04B 1/0458 (2013.01); H04B 1/44 (2013.01); H03F 2200/102 (2013.01); H03F 2200/219 (2013.01); H03F 2200/27 (2013.01); H03F 2200/294 (2013.01); H03F 2200/429 (2013.01); H03F 2200/504 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A transceiver circuit comprising:
a Doherty amplifier including a main amplifier and a peak amplifier;
a low noise amplifier;
a first band pass filter connected between an output of the Doherty amplifier and an antenna port;
a second band pass filter connected between an input of the low noise amplifier and the antenna port;
an antenna switch configured to connect the first band pass filter to the antenna port during a transmission connection state in which a first signal output from the Doherty amplifier is supplied to the antenna port, and to connect the second band pass filter to the antenna port during a reception connection state in which a second signal received by the antenna port is inputted to the low noise amplifier; and
a control circuit that is configured to control an operation of the Doherty amplifier by switching an operation mode of the Doherty amplifier between an envelope tracking mode and a Doherty mode.