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:
Aug. 09, 2005
Filed:
Mar. 08, 2001
Koji Furutani, Okayama, JP;
Takanori Uejima, Okayama-ken, JP;
Tetsuro Harada, Shiga-ken, JP;
Yoshiki Takada, Okayama-ken, JP;
Norio Nakajima, Takatsuki, JP;
Koji Furutani, Okayama, JP;
Takanori Uejima, Okayama-ken, JP;
Tetsuro Harada, Shiga-ken, JP;
Yoshiki Takada, Okayama-ken, JP;
Norio Nakajima, Takatsuki, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
A mobile communication device, preferably in the form of a dual-band cellular phone, includes two communications systems supporting different frequency bands, such as DCS in the 1.8 GHz band and GSM in the 900 MHz band. The mobile communication device includes an antenna, a high-frequency composite unit, DCS and GSM transmitters, and DCS and GSM receivers. The high-frequency composite unit contains a diplexer, DCS and GSM high-frequency switches, DCS and GSM high-frequency filters or notch filters, and a directional coupler.