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:
Jul. 23, 2024
Filed:
Sep. 30, 2021
Murata Manufacturing Co., Ltd., Kyoto-fu, JP;
Shunji Yoshimi, Nagaokakyo, JP;
Yuji Takematsu, Nagaokakyo, JP;
Yukiya Yamaguchi, Nagaokakyo, JP;
Takanori Uejima, Nagaokakyo, JP;
Satoshi Goto, Nagaokakyo, JP;
Satoshi Arayashiki, Nagaokakyo, JP;
Murata Manufacturing Co., Ltd., Kyoto-fu, JP;
Abstract
A semiconductor devices comprises a first member including a first circuit partially formed by an elemental semiconductor element at a surface layer, a first conductive raised portion at the first member, and a second member smaller than the first member in plan view joined to the first member. The second member includes a second circuit partially formed by a compound semiconductor element. A second conductive raised portion is at the second member. A power amplifier includes a first-stage amplifier circuit included in the first or second circuit and a second-stage amplifier circuit included in the second circuit. The first circuit includes a first switch for inputting to the first-stage amplifier circuit a radio-frequency signal inputted to a selected contact, a control circuit to control the first- and second-stage amplifier circuits, and a second switch for outputting from a selected contact a radio-frequency signal outputted by the second-stage amplifier circuit.