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:
May. 23, 2006
Filed:
Jun. 14, 2002
Shun Imai, Komoro, JP;
Hitoshi Akamine, Maebashi, JP;
Takashi Ito, Komoro, JP;
Satoshi Arai, Gunma, JP;
Shun Imai, Komoro, JP;
Hitoshi Akamine, Maebashi, JP;
Takashi Ito, Komoro, JP;
Satoshi Arai, Gunma, JP;
Hitachi ULSI Systems Co., Ltd., Tokyo, JP;
Renesas Technology Corp., Tokyo, JP;
Abstract
The invention realizes a wireless communication module that is capable of transmitting the fundamental wave with low loss and reducing the double higher harmonic wave level to a desired level or lower as the whole module. The invention provides a front end module to be used for a wireless communication system such as cellular phone in which at least an output power amplifier, a matching circuit, and a low-pass filter are mounted on one insulating substrate and these circuits are connected in the above-mentioned order, wherein the relative phase of the double higher harmonic wave impedance between phases in view of the matching circuit side and the low-pass filter side from the connection point between the matching circuit and the low-pass filter is set in a range of 180 degrees ±90 degrees.