The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Nov. 28, 2023

Filed:

Sep. 21, 2020
Applicant:

Murata Manufacturing Co., Ltd., Kyoto-fu, JP;

Inventors:

Yasunari Umemoto, Nagaokakyo, JP;

Shaojun Ma, Nagaokakyo, JP;

Shigeki Koya, Nagaokakyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/14 (2006.01); H01L 29/423 (2006.01); H03F 3/21 (2006.01); H03F 1/02 (2006.01); H01L 27/06 (2006.01); H01L 29/08 (2006.01); H01L 29/10 (2006.01); H01L 29/417 (2006.01); H01L 29/737 (2006.01);
U.S. Cl.
CPC ...
H01L 29/42304 (2013.01); H01L 27/0658 (2013.01); H01L 29/0817 (2013.01); H01L 29/0826 (2013.01); H01L 29/1004 (2013.01); H01L 29/41708 (2013.01); H01L 29/7371 (2013.01); H03F 1/0205 (2013.01); H03F 3/21 (2013.01); H03F 2200/451 (2013.01);
Abstract

A collector layer is disposed on a substrate. The collector layer is a continuous region when viewed in plan. A base layer is disposed on the collector layer. An emitter layer is disposed on the base layer. An emitter mesa layer is disposed on the emitter layer. Two base electrodes are located outside the emitter mesa layer and within the base layer when viewed in plan. The two base electrodes are electrically connected to the base layer. Two capacitors are disposed on or above the substrate. Each of the two capacitors is connected between a corresponding one of the two base electrodes and a first line above the substrate. Two resistance elements are disposed on or above the substrate. Each of the two resistance elements is connected between a corresponding one of the two base electrodes and a second line on or above the substrate.


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