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:
Feb. 19, 2008
Filed:
Mar. 02, 2005
Masaharu Udagawa, Setagaya-ku, JP;
Taichi Ikedo, Yokohama, JP;
Masaharu Udagawa, Setagaya-ku, JP;
Taichi Ikedo, Yokohama, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A polar modulation transmission apparatus is provided which can adjust synchronization between an amplitude signal and phase signal in a simple configuration accurately and automatically. A polar signal generation circuitsends an amplitude signal and phase signal for synchronization adjustment to transmission lines of these signals, incorporates the amplitude signal and phase signal for synchronization adjustment output from low pass filterswhich are final stage circuits that process the respective signals in their baseband signal states into a delay difference detection circuit, a synchronization adjustment control circuitobtains a synchronization adjustment value at which the delay difference between the signals is eliminated based on the delay difference detection result and a synchronization adjustment circuitgives delays corresponding to the synchronization adjustment value to the respective signals.