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:
Mar. 01, 2022
Filed:
Oct. 26, 2020
Qualcomm Incorporated, San Diego, CA (US);
Yue Chao, San Diego, CA (US);
Yiwu Tang, San Diego, CA (US);
Yunliang Zhu, San Diego, CA (US);
Dongmin Park, San Diego, CA (US);
Jingcheng Zhuang, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
A local oscillator (LO) circuit includes a voltage controlled oscillator (VCO) configured to receive an output of a phase locked loop (PLL) circuit, the VCO coupled to a clock gating circuit configured to generate a VCO output signal (vco_g), a local oscillator (LO) divider configured to receive the VCO output signal (vco_g) and a local oscillator (LO) preset signal, the LO preset signal configured to set the LO divider to a predetermined initial phase, a programmable divider configured to receive a divider signal and the VCO output signal (vco_g) and generate a local oscillator (LO) phase detection trigger signal, Fv, a toggling accumulator coupled to an output of the programmable divider, the toggling accumulator configured to receive the divider signal and the LO phase detection trigger signal, Fv, and generate a counter signal, and a decision logic configured to receive a sample enable signal and the counter signal and adjust the programmable divider based on the sample enable signal and the counter signal.