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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.:

US 6766149 B1

PDFFull Text
Date of Patent:
Jul. 20, 2004

Filed:

Dec. 22, 1999

Mobile radio terminal and surface acoustic wave antenna duplexer

Applicant:
Inventors:

Mitsutaka Hikita, Kokubunji, JP;

Kazuyuki Sakiyama, Mizusawa, JP;

Naoki Matsuura, Mizusawa, JP;

Nobuhiko Shibagaki, Kokubunji, JP;

Assignee:

Hitachi Media Electronics Co., Ltd., Iwate-ken, JP;

Attorney:

Crowell & Moring LLP

Primary Examiner:

Sinh Tran

Assistant Examiner:

Kamran Afshar

Int. Cl.
CPC ...
H01Q 1/24 ; H04Q 7/32 ;
U.S. Cl.
CPC ...
H01Q 1/24 ; H04Q 7/32 ;
Abstract

An antenna duplexer is reduced in size, so that a dual-band/triple-band mobile radio terminal small in size and light in weight is realized. An off-set PLL modulation system is adopted, and a transmitting system of the antenna duplexer is constituted by switches. Further, in mounting an SAW filter, a multi-layer substrate is adopted, matching circuits and so on are formed by lumped-constant circuit elements, and the SAW filter is received in a space provided on the multi-layer substrate.

Find Patent Forward Citations

Hikita, Mitsutaka. (2004). Mobile radio terminal and surface acoustic wave antenna duplexer (U.S. Patent No. 6766149). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6766149

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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