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:
Aug. 09, 2022
Filed:
Jun. 24, 2021
Qualcomm Incorporated, San Diego, CA (US);
Masoud Moslehi Bajestan, San Diego, CA (US);
Marco Zanuso, Encinitas, CA (US);
Razak Hossain, San Diego, CA (US);
Hasnain Lakdawala, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
An apparatus implements a multiplying delay-locked loop (MDLL) including a sampler to be calibrated. In an example aspect, an apparatus includes an MDLL and a sampler calibrator. The MDLL includes a locked-loop feedforward path with a sampler, a control output, a feedback input, and a reference input coupled to a reference signal source. The MDLL also includes a VCO, a multiplexer, and a divider. The VCO includes a VCO input, a VCO output, and a control input coupled to the control output. The multiplexer includes a first input coupled to the reference signal source, a second input coupled to the VCO output, and an output coupled to the VCO input. The divider is coupled between the VCO output and the feedback input. The sampler calibrator includes a first input coupled to the reference signal source, a second input coupled to the VCO output, and an output coupled to the sampler.