US 12,316,306 B2
High frequency semiconductor integrated circuit
Takayuki Teraguchi, Kawasaki Kanagawa (JP)
Assigned to Kabushiki Kaisha Toshiba, Tokyo (JP); and Toshiba Electronic Devices & Storage Corporation, Tokyo (JP)
Filed by Kabushiki Kaisha Toshiba, Tokyo (JP); and Toshiba Electronic Devices & Storage Corporation, Tokyo (JP)
Filed on Sep. 7, 2023, as Appl. No. 18/243,635.
Claims priority of application No. 2023-045829 (JP), filed on Mar. 22, 2023.
Prior Publication US 2024/0322808 A1, Sep. 26, 2024
Int. Cl. H03K 17/0412 (2006.01); H03K 17/16 (2006.01); H03K 17/693 (2006.01)
CPC H03K 17/04123 (2013.01) [H03K 17/162 (2013.01); H03K 17/693 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A high frequency semiconductor integrated circuit comprising:
a first input terminal receiving a high frequency signal;
a second input terminal receiving a control signal;
a first output terminal outputting the high frequency signal;
a second output terminal outputting the high frequency signal;
a first switch circuit controlling electrical coupling between the first input terminal and the first output terminal;
a second switch circuit controlling electrical coupling between the first input terminal and the second output terminal;
a third switch circuit controlling electrical coupling between the first input terminal and the first output terminal, and coupled in parallel to the first switch circuit; and
a fourth switch circuit controlling electrical coupling between the first input terminal and the second output terminal, and coupled in parallel to the second switch circuit, wherein
in a case where a coupling destination of the first input terminal is switched from the first output terminal to the second output terminal, a third switching operation changing the third switch circuit from an ON state to an OFF state and a fourth switching operation changing the fourth switch circuit from the OFF state to the ON state are finished, after a first switching operation changing the first switch circuit from the ON state to the OFF state and a second switching operation changing the second switch circuit from the OFF state to the ON state are finished.