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:
Sep. 30, 2025
Filed:
Apr. 18, 2024
Silicon Laboratories Inc., Austin, TX (US);
Rangakrishnan Srinivasan, Austin, TX (US);
Mustafa H. Koroglu, Austin, TX (US);
Zhongda Wang, Sunnyvale, CA (US);
Francesco Barale, North Kingstown, RI (US);
Abdulkerim L. Coban, Austin, TX (US);
John M. Khoury, Austin, TX (US);
Sriharsha Vasadi, Austin, TX (US);
Michael S. Johnson, Austin, TX (US);
Vitor Pereira, Austin, TX (US);
Silicon Laboratories Inc., Austin, TX (US);
Abstract
A transmitter including a frequency synthesizer with a voltage-controlled oscillator that provides an oscillating signal, a programmable delay circuit that delays the oscillating signal to provide a delayed oscillating signal, a power amplifier that is configured to amplify the delayed oscillating signal for transmission sufficient to produce interference, and a delay controller that programs the delay circuit with a delay time that reduces interference caused by coupling from the power amplifier to the voltage-controlled oscillator. The delay circuit may be programmed to reduce control voltage change of the voltage-controlled oscillator as a function of delay change, and/or to reduce phase noise degradation at an output of the transmitter as a function of delay change. The delay may be adjusted based on detected operating temperature. A calibration value may be determined at a calibration frequency, in which a frequency offset may be determined based on a selected channel frequency.