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. 01, 2007
Filed:
Feb. 03, 2004
Mamoru Arayashiki, Yokohama, JP;
Mamoru Arayashiki, Yokohama, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A transmitter and method to output a stable output signal having low distortion by adjusting a delay time of an amplitude signal path and a phase signal path. In an amplitude phase extracting part, amplitude data and phase data are extracted from a transmit data signal and outputted. The amplitude of the amplitude data is modulated in an amplitude modulating part and an amplitude modulating signal is outputted; the phase of the phase data is modulated and a phase modulating signal is outputted. In a non-linear amplifying part, the phase modulating signal is multiplied by the amplitude modulating signal to output an RF signal with a prescribed gain amplified. A delay part provided in a pre-stage of the amplitude modulating part and a delay part provided in a pre-stage of the phase modulating part, respectively, adjusts the delay time of an amplitude signal path and a phase signal path.