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:
Nov. 02, 2010
Filed:
Nov. 09, 2006
Hiroyuki Yoshikawa, Tokyo, JP;
Shunsuke Hirano, Kanagawa, JP;
Hiroyuki Yoshikawa, Tokyo, JP;
Shunsuke Hirano, Kanagawa, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A two-point modulation type phase apparatus and a wireless communication apparatus capable of achieving a reduction in circuit scale and low power consumption while maintaining modulation precision. It is possible to provide a D/A converter () that converts the inputted digital baseband signal to an analog signal, an adder () that adds an output signal of a D/A converter () and an output of a loop filter () to output to a control voltage terminal of the voltage controlled oscillator (), and a peak control section () provided at a front stage of the D/A converter () that carries out smoothing of peak portions appearing at the inputted digital baseband signal, at a two-point modulation type phase modulation apparatus () that modulates a-carrier frequency signal using an inputted digital baseband signal by setting a frequency dividing ratio of a frequency divider () of a PLL circuit based on an inputted digital baseband modulation signal, and adding a voltage corresponding to a signal that is an inputted digital baseband signal analog-converted for supply to a control voltage terminal of a voltage controlled oscillator ().