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:
Jul. 15, 2025
Filed:
Nov. 10, 2022
Realtek Semiconductor Corp., Hsinchu, TW;
Chia-Liang (Leon) Lin, Fremont, CA (US);
REALTEK SEMICONDUCTOR CORP., Hsinchu, TW;
Abstract
A method of envelope detection receives an RF (radio frequency) signal comprising a first voltage and a second voltage; converts the first voltage into a first current using a first VCCS (voltage controlled current source); converts the second voltage into a second current using a second VCCS; converts a bias voltage into a third current using a third VCCS; converting an output voltage into a fourth current using a fourth VCCS; sums the first current and the second current into an input current flowing through a first internal node of a first internal voltage; sums the third current and the fourth current into a mirrored current flowing through a second internal node of a second internal voltage; uses a source follower to receive the second internal voltage and output the output voltage; and uses a current mirror to force the mirrored current to be equal to the input current.