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:
Jan. 19, 2016
Filed:
Jan. 13, 2014
Signal generator, electronic system comprising the signal generator and method of generating signals
Montage Technology (Shanghai) Co., Ltd., Shanghai, CN;
Mingfu Shi, Shanghai, CN;
Shen Feng, Shanghai, CN;
MONTAGE TECHNOLOGY (SHANGHAI) CO., LTD., Shanghai, CN;
Abstract
A quadrature phase signal generator comprises a relative delay unit, a phase detector, a first amplifier and a loop filter. The relative delay unit delays differential input signals and generates four delayed signals. The phase detector generates quadrature four phase output signals, a first voltage signal and a second voltage signal according to the four delayed signals. A difference of the first and the second voltage signals indicates a phase error of the quadrature four phase output signals. The first amplifier amplifies the voltage difference of the first and the second voltage signals. The loop filter filters the amplified voltage difference and generates a tuning voltage signal. The loop filter is further communicatively coupled to the relative delay unit. The relative delay unit adjusts a delay of the quadrature four phase delayed signals according to the tuning voltage signal.