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. 02, 2004
Filed:
Feb. 16, 2000
Tomoya Bando, Omihachiman, JP;
Ken Tonegawa, Otsu, JP;
Norihiro Shimada, Shiga-ken, JP;
Yoshihiro Yoshimoto, Shiga-ken, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
A high-frequency composite component can achieve reduction in size and weight, while providing high performance. A portable wireless device incorporates the high-frequency composite component, including a multi-layer substrate, with a low noise amplifier LNA and a band pass filter BPF constituting parts of a high-frequency circuit, with an input terminal, an output terminal, and control terminals on the substrate. The low noise amplifier LNA is constituted of transistors, an inductor, capacitors, and resistors. The band pass filter BPF is constituted of strip lines, an inductor, and capacitors. The low noise amplifier LNA and the band pass filter BPF are connected with each other within the substrate via a matching capacitor. The amplifier ground and filter ground are separated within the substrate and connected respectively to separate ground terminals on the substrate. In another embodiment, the high-frequency composite component may include a mixer and a high-pass filter integrated with a multi-layer substrate.