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.
Patent No.:
Date of Patent:
Mar. 25, 2025
Filed:
Dec. 13, 2021
Murata Manufacturing Co., Ltd., Kyoto-fu, JP;
Shaojun Ma, Nagaokakyo, JP;
Shigeki Koya, Nagaokakyo, JP;
Masayuki Aoike, Nagaokakyo, JP;
Shinnosuke Takahashi, Nagaokakyo, JP;
Yasunari Umemoto, Nagaokakyo, JP;
Masatoshi Hase, Nagaokakyo, JP;
Murata Manufacturing Co., Ltd., Kyoto-fu, JP;
Abstract
A power amplifier that includes a substrate, and an emitter layer, a base layer, and a collector layer laminated in this order on a major surface of the substrate includes an electrical insulator provided adjacent to the emitter layer, an emitter electrode provided between the substrate and both the emitter layer and the electrical insulator, a base electrode electrically connected to the base layer, and a collector electrode electrically connected to the collector layer. The emitter electrode, the electrical insulator, and the base layer are provided between the substrate and the base electrode in a direction perpendicular to the major surface of the substrate.