Author:
Martinez Mendoza Monica,Wentzel Andreas,Alvarez Melcon Alejandro,Heinrich Wolfgang
Abstract
In this paper, two compact lumped-element band pass reconstruction filters for digital microwave power amplifiers applications in the800 MHzband are presented. The filters, based on the trisection and quartet topologies, include cross-couplings which produce transmission zeros for maximum selectivity, and can be designed with practical element values. In contrast to common filter designs the input impedance characteristic is optimized broadband to values different from50 Ω, as required for proper amplifier operation. Both filters achieve an insertion loss of around0.8 dBand an equiripple bandwidth of240 MHz (trisection)and290 MHz (quartet), respectively, with improved out-of-band suppression. Results show that a considerable improvement in amplifier linearity and efficiency can be obtained with the new proposed filters, as compared with simpler filters traditionally used in power amplifier applications.
Publisher
Cambridge University Press (CUP)
Subject
Electrical and Electronic Engineering
Reference13 articles.
1. Advanced coupling matrix synthesis techniques for microwave filters
2. Li W. ; Vandewege J. : Practical design considerations on lumped element filters for microwave applications, in 7th IEEE Int. Conf. on Electronics, Circuits and Systems (ICECS) 2000, vol. 1, 2000, 394–397.
3. Wentzel A. ; Heinrich W. : A GaN voltage-mode class-D MMIC with improved overall efficiency for future RRH applications, in Proc. of 43rd EuMC 2013, Nuremberg, Germany, 2013, 549–552.
4. Martinez-Mendoza M. : Advanced lumped-element trisection filter for digital microwave power amplifiers, in Proc. of the 44th EuMC 2014, Rome, Italy, 2014, 548–551.
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献
1. A Digital Power Amplifier for 32-QAM;2021 51st European Microwave Conference (EuMC);2022-04-04