학술논문
Real-time amplifier optimization algorithm for adaptive radio using a tunable-varactor matching network
Document Type
Conference
Author
Source
2017 IEEE Radio and Wireless Symposium (RWS) Radio and Wireless Symposium (RWS), 2017 IEEE. :215-217 Jan, 2017
Subject
Language
ISSN
2164-2974
Abstract
Fast load impedance tuning of a varactor diode matching network to maximize amplifier gain in real-time reconfigurable circuitry is demonstrated. A published tunable varactor-diode matching topology is designed for operation at 1.3 GHz to provide significant Smith Chart coverage. A steepest-ascent algorithm is applied for fast optimization, and measurement results indicate excellent convergence from multiple starting points within the Smith Chart. Algorithm data compares well with traditional loadpull results measured with both a commercially available tuner and the tunable-varactor network, and searching with the varactor tuner search is much faster than a traditional mechanical tuner.