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Performance evaluations of microwave power amplifiers with single‐ and multi‐carrier quadrature amplitude modulations
Author(s) -
Huang ChienChang,
Chen KuanYu
Publication year - 2006
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.22020
Subject(s) - quadrature amplitude modulation , electronic engineering , qam , amplifier , microwave , phase shift keying , amplitude modulation , modulation (music) , orthogonal frequency division multiplexing , figure of merit , electrical engineering , engineering , computer science , telecommunications , physics , channel (broadcasting) , frequency modulation , optics , bit error rate , radio frequency , acoustics , cmos
This article presents the performance evaluations of microwave power amplifiers (PAs) for different kinds of quadrature amplitude modulation (QAM) schemes including π/4‐DQPSK and 16‐QAM for single‐carrier formats and orthogonal frequency division multiplexing (OFDM) for multi‐carrier configuration, by using the time‐domain signal processing technique and the hybrid Volterra analysis. The influences due to various peak‐to‐average power ratios (PAPRs) of the modulation signals for the PA performances such as output powers, adjacent channel power ratios (ACPRs), and error vector magnitudes (EVMs) are shown with experimental verifications. A figure‐of‐merit of PAs based on linearity and efficiency is presented to establish a criterion for choosing the best working condition. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 2375–2378, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22020