

浏览全部资源
扫码关注微信
吉林大学 珠海学院, 广东 珠海 519041
Received:30 November 2015,
Accepted:25 February 2016,
Published:2016-07
移动端阅览
Hong-xu ZHU. Research and realization of a new type harmonic matching network for amplifier[J]. Chinese journal of liquid crystals and displays, 2016, 31(7): 703-707.
Hong-xu ZHU. Research and realization of a new type harmonic matching network for amplifier[J]. Chinese journal of liquid crystals and displays, 2016, 31(7): 703-707. DOI: 10.3788/YJYXS20163107.0703.
在现代通信系统中,功率放大器起着重要的作用并消耗大量的功率,因此,提高放大器效率对于节约整个系统的能量是尤为重要的。本文的目标是找到放大器在谐波频率处的匹配阻抗,并最终构建放大器的谐波匹配网络,以使放大器达到其最高效率。本文采用了负载牵引技术,使用自动控制调节器对阻抗进行控制。首先对自动调谐器进行校准,得出其内部的不同坐标与相应阻抗的对应关系。然后通过对自动调谐器的控制来控制和改变二次谐波和三次谐波的负载阻抗,找到谐波匹配阻抗以使放大器在基频的效率达到最大。最终,根据谐波匹配阻抗来构建放大器的谐波匹配网络。实验结果表明:通过过谐波匹配,可以使放大器的效率提高2.13%。采用本文所使用的方法,放大器的功率提高了2.13%,实现了通过谐波匹配网络来提高放大器效率的目标,证明了本文所采用的方法的可行性。
In communication systems
power amplifiers (PAs) play an important role and consume large amount of power. As a consequence
the enhancement of amplifier efficiency is significantly important for saving energy. The goal for this paper is to find the matching impedances of harmonics and build a matching network for optimum efficiency performance of an amplifier. The load pull technique is applied in this paper to control the impedances with automatically controlled tuners. Firstly
a calibration of the automatically tuners is made to get the correspondence of tuner positions and impedance. Then the tuners are used to control and change the load impedances at 2
nd
and 3
rd
harmonics for maximum efficiency performance of an amplifier at fundamental frequency and finally to build a matching network according to the matching impedances at harmonics. Experimental results indicate that the efficiency of the amplifier with harmonic matching can be improved 2.13%. With the method implemented in this paper
the efficiency of the amplifier was improved 2.13%
it realized the goal to improve the efficiency of an amplifier with harmonic. It proves the feasibility of the method investigated in this paper.
SAFARI N,OLAVSBRATEN M,ROSTE T.On the optimization of biasing conditions in a digitally-linearized power amplifier[C].Proceedings of the 38th European Microwave Conference,Amsterdam:IEEE,2008:567-570.
CEYLAN N,MUELLER J E,PITTORINO T,et al. Mobile phone power amplifier linearity and efficiency enhancement using digital predistortion[C].Proceedings of the 33rd European Microwave Conference,Munich,Germany:IEEE,2003,1:269-272.
YANG Y,YI J,WOO Y Y,et al. Experimental investigation on efficiency and linearity of microwave Doherty amplifier[C].Proceedings of the IEEE MTT-S International Microwave Symposium Digest,Phoenix,AZ,USA:IEEE,2001,2:1367-1370.
XIAO D,SCHREURS D,ANGELOV I,et al. Efficiency enhancement of harmonic-tuned GaN power amplifier using Doherty like load modulation[C].Proceedings of the IEEE Compound Semiconductor Integrated Circuits Symposium,Monterey,CA:IEEE,2008:1-5.
CHOI G W,KIM H J,HWANG W J,et al. High efficiency class-E tuned Doherty amplifier using GaN HEMT[C].Proceedings of the IEEE MTT-S International Microwave Symposium Digest,Boston,MA:IEEE,2009:925-928.
JEONG H T,LEE H S,CHANG I S,et al. Efficiency enhancement method for high-power amplifiers using a dynamic load adaptation technique[C].Proceedings of the IEEE MTT-S International Microwave Symposium Digest,Long Beach,CA:IEEE,2005:2059-2062.
LI Y,WU R L,LOPEZ J,et al. A highly-efficient BiCMOS cascode Class-E power amplifier using both envelope-tracking and transistor resizing for LTE-like applications[C].Proceedings of the IEEE Bipolar/BiCMOS Circuits and Technology Meeting,Atlanta,GA:IEEE,2011:142-145.
KIM I,WOO Y Y,KIM J,et al. High-efficiency hybrid EER transmitter using optimized power amplifier[J].IEEE Transactions on Microwave Theory and Techniques,2008,56(11):2582-2593.
AREF A F,ASKAR A,WERNER S,et al. Efficiency boosting of multilevel LINC transmitter[C].Proceedings of the Asia-Pacific Microwave Conference,Melbourne,VIC:IEEE,2011:127-130.
SEVIC J.Theory of load and source pull measurement[DB/OL].[1999-07-27] . http://www.maurymw.com/support/pdfs/5C-055.pdf. http://www.maurymw.com/support/pdfs/5C-055.pdf.
CUSACK J M,PERLOW S M,PERLMAN B S.Automatic load contour mapping for microwave power transistors[J].IEEE Transactions on Microwave Theory and Techniques, 1974,22(12):1146-1152.
SEVIC J.Introduction to tuner-based measurement and characterization[DB/OL].[2004-08-31] . http://www.maurymw.com/pdf/applib/5C-054.pdf. http://www.maurymw.com/pdf/applib/5C-054.pdf.
MOHAMED A M M,BOUMAIZA S,MANSOUR R R.Novel reconfigurable fundamental/harmonic matching network for enhancing the efficiency of power amplifiers[C].Proceedings of the European Microwave Conference,Paris:IEEE,2010:1122-1125.
LAROSE R,GHANNOUCHI F M,BOSISIO R G.A new multi-harmonic load-pull method for nonlinear device characterization and modeling[C].Proceedings of the IEEE MTT-S International Microwave Symposium Digest,Dallas,TX:IEEE,1990,1:443-446.
GOLIO M,GOLIO J.RF and Microwave Applications and Systems (The RF and Microwave Handbook)[M].2nd ed.Boca Raton:CRC Press,2007.
POZAR D M.Microwave amplifier design[M]//POZAR D M.Microwave Engineering.3rd ed.Hamilton,USA:John Wiley & Sons,2005:570-573.
0
Views
24
下载量
0
CSCD
Publicity Resources
Related Articles
Related Author
Related Institution
京公网安备11010802024621