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. 01, 2016
Filed:
Oct. 22, 2015
Applicant:
Mediatek Inc., Hsin-Chu, TW;
Inventors:
Assignee:
MEDIATEK INC., Hsin-Chu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/197 (2006.01); H03C 3/09 (2006.01); H03C 3/20 (2006.01); H03L 7/093 (2006.01); H03L 7/099 (2006.01); H02M 3/07 (2006.01); H03B 5/12 (2006.01); H03L 7/08 (2006.01); H03L 7/10 (2006.01);
U.S. Cl.
CPC ...
H03C 3/20 (2013.01); H02M 3/07 (2013.01); H03B 5/124 (2013.01); H03B 5/1212 (2013.01); H03C 3/0925 (2013.01); H03C 3/0941 (2013.01); H03C 3/0958 (2013.01); H03L 7/0802 (2013.01); H03L 7/093 (2013.01); H03L 7/099 (2013.01); H03L 7/104 (2013.01); H03L 7/1976 (2013.01);
Abstract
A modulation circuit includes a phase locked loop (PLL) circuit, a scalar circuit and a sigma-delta modulator. The PLL circuit is for generating an output oscillating signal in response to a reference signal, a first control signal and a second control signal. The scalar circuit is for generating the first control signal in response to modulating data to control frequency deviation of the output oscillating signal, wherein the first control signal is in a digital form. The sigma-delta modulator is for generating the second control signal according to the modulating data to modulate a divider value of a frequency divider of the PLL circuit.