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:
May. 04, 2023
Apple Inc., Cupertino, CA (US);
Thomas Mayer, Linz, AT;
Christian Wicpalek, Puchenau, AT;
Juergen Koechl, Linz, AT;
Jongmin Park, San Diego, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
An electronic device may include wireless circuitry with first and second mixers on a signal path for converting a signal using first and second clock signals via high side injection (HSI) or low side injection (LSI). A first phase-locked loop (PLL) may generate the first clock signal and a second PLL may generate the second clock signal. A switch may couple the first PLL to a reference oscillator when LSI is used and may couple the first PLL to a third PLL when HSI is used. The third PLL may generate a second reference signal based on a first reference signal from the reference oscillator. The second PLL may generate the second clock signal based on the output of the third PLL. This may serve to may minimize phase noise even as the mixers switch between HSI and LSI.