A 100Watt Ultra-Broadband Power Amplifier Using Silicon LDMOSFETs

被引:0
作者
Sim, Jaewoo [1 ]
Lim, Jaeyen [1 ]
Park, Myungkyn [1 ]
Seo, Sung-Won
Mah, Bak-IL
机构
[1] Peopleworks Inc, Seoul 152766, South Korea
来源
2010 ASIA-PACIFIC MICROWAVE CONFERENCE | 2010年
关键词
Broadband power amplifier; transmission line transformer; push-pull; feedback; Broadband RF choke; Ferrite core;
D O I
暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We present the design of a high-efficiency power amplifier using silicon LDMOSFETs for the ultra-broadband from 30 to 500MHz. The amplifier has a 4-way push-pull configuration using Guanella's 1:1 transmission line transformer. To achieve both the high efficiency and the IMD3 required, the bias condition for the class-AB operation has been applied. In addition, a push-pull structure and a negative feedback network have been adopted for the broadband operation which has been implemented using broadband coaxial transmission line transformers and a broadband high-Q RF choke inductor. It is shown from the experimental results presented that the implemented power amplifier exhibits an output power at the 1dB compression point (P1dB) of more than 100W, as well as having a power-added efficiency of more than 35% at P1dB over the entire operational frequency band from 30 to 500MHz. The results also show very flat power gain characteristics of 40 +/- 1.5dB from 30MHz to 500MHz.
引用
收藏
页码:418 / 421
页数:4
相关论文
共 5 条
  • [1] MONOLITHIC 2-20 GHZ GAAS TRAVELING-WAVE AMPLIFIER
    AYASLI, Y
    REYNOLDS, LD
    VORHAUS, JL
    HANES, L
    [J]. ELECTRONICS LETTERS, 1982, 18 (14) : 596 - 598
  • [2] Cho J., 2009, AS PAC MICR C DIG DE
  • [3] Cripps S. C., 2006, ARTECH MICR
  • [4] Guanella G, 1944, REV BROWN BOVERI, V31, P327
  • [5] High-power 20-100-MHz linear and efficient power-amplifier design
    Sahan, Necip
    Inal, Mehmet Erim
    Dernir, Simsek
    Toker, Canan
    [J]. IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2008, 56 (09) : 2032 - 2039