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:
Oct. 08, 2019
Filed:
Mar. 30, 2018
Psemi Corporation, San Diego, CA (US);
Damian Costa, San Diego, CA (US);
Chih-Chieh Cheng, Poway, CA (US);
Richard B. Whatley, Carlsbad, CA (US);
Tero Tapio Ranta, San Diego, CA (US);
pSemi Corporation, San Diego, CA (US);
Abstract
Methods and devices for improving AM-AM and AM-PM performance of an RF amplifier are presented. According to one aspect, input and output harmonic terminations coupled to the input and output of the amplifier are tuned at frequencies near to, but different than, a second harmonic frequency of an RF signal to be amplified. Improved AM-AM and AM-PM performance is obtained when i) the input harmonic termination is tuned at a frequency that is below the second harmonic frequency and the output harmonic termination is tuned at a frequency that is above the second harmonic frequency, and ii) the input harmonic termination is tuned at a frequency that is farther away from the second harmonic frequency than the frequency used for tuning of the output harmonic termination.