Invention Grant
- Patent Title: Power amplifier circuit
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Application No.: US17167406Application Date: 2021-02-04
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Publication No.: US11863128B2Publication Date: 2024-01-02
- Inventor: Hideyuki Sato , Koshi Himeda
- Applicant: Murata Manufacturing Co., Ltd.
- Applicant Address: JP Kyoto
- Assignee: MURATA MANUFACTURING CO., LTD.
- Current Assignee: MURATA MANUFACTURING CO., LTD.
- Current Assignee Address: JP Kyoto
- Agency: Pearne & Gordon LLP
- Priority: JP 20018151 2020.02.05 JP 20201727 2020.12.04
- Main IPC: H03F1/30
- IPC: H03F1/30 ; H03F1/08 ; H03F3/213 ; H01L27/102 ; H01L29/737 ; H01L23/00

Abstract:
A power amplifier circuit includes a first transistor disposed on a semiconductor substrate; a second transistor that supplies a bias current based on a first current which is a part of a control current to the first transistor; a current output element in which a current flowing therethrough increases in accordance with a rise in temperature; and a wiring portion including a plurality of metal layers that are electrically connected to an emitter of the first transistor and that are stacked one on top of another so as to oppose the semiconductor substrate. At least one metal layer among the plurality of metal layers extends so as to overlap an area extending from at least a part of a first disposition area in which the first transistor is disposed to a second disposition area in which the current output element is disposed in plan view of the semiconductor substrate.
Public/Granted literature
- US20210242836A1 POWER AMPLIFIER CIRCUIT Public/Granted day:2021-08-05
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