[1] Univ Belgrade, Sch Elect Engn, Belgrade 11001, Serbia
[2] Univ Westminster, Wireless Communicat Res Grp, London, England
来源:
2012 20TH TELECOMMUNICATIONS FORUM (TELFOR)
|
2012年
关键词:
optical switchs;
PIN diodes;
reconfigurable RF power amplifiers;
D O I:
暂无
中图分类号:
TN [电子技术、通信技术];
学科分类号:
0809 ;
摘要:
In this paper, a reconfigurable input matching network (IMN) is used to obtain reconfigurable RF power amplifier (RPA). An Input Matching Network is realized as simple T-section, where reconfigurability is achieved by switch in shunt transmission line. An optical switch (OS) and a PIN diode are used separately, and results are presented for both cases. When an OS or a PIN diode switch is ON, RPA operates at 1.9 GHz, otherwise RPA operates at 2.2 GHz. An Output Matching Network (OMN) is realized as wideband circuit. A Cree's CGH21240 AWR Microwave Office (MWO) model of wideband transistor is used for RPAs. The S-parameters and power added efficiency (PAE) of about 50% and 35% at 1.9 GHz and 2.2 GHz, respectively, for both types of RPAs are presented.