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.

Date of Patent:
Apr. 14, 2020

Filed:

Aug. 20, 2018
Applicant:

Avago Technologies General Ip (Singapore) Pte. Ltd., Singapore, SG;

Inventors:

Zhiyu Ru, Irvine, CA (US);

Jun Cao, Irvine, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 25/00 (2006.01); H03D 13/00 (2006.01); H04B 1/40 (2015.01); H03L 7/08 (2006.01); H03K 3/037 (2006.01); H03L 7/093 (2006.01); H03K 5/00 (2006.01);
U.S. Cl.
CPC ...
H04B 1/40 (2013.01); H03K 3/037 (2013.01); H03L 7/0802 (2013.01); H03L 7/093 (2013.01); H03K 5/00 (2013.01); H03K 2005/00078 (2013.01);
Abstract

An apparatus for phase and frequency detection (PFD) includes a first circuit to receive a first input pulse and to generate a first output pulse, the rising edge of which is triggered by a first rising edge of the first input pulse, and a second circuit coupled to the first circuit and configured to receive a second input pulse and to generate a second output pulse, the rising edge of which is triggered by a second rising edge of the second input pulse. The second output pulse has a falling edge carrying first information related to a first rising edge of the first input pulse. The first output pulse has a falling edge carrying second information related to a second rising edge of the second input pulse.


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