A 500-W coupled-cavity TWT for Ka-band communication

被引：33
|
作者：
Legarra, JR [1 ]
Cusick, J [1 ]
Begum, R [1 ]
Kolda, P [1 ]
Cascone, M [1 ]
机构：
[1] CPI, Palo Alto, CA 94303 USA
来源：
IEEE TRANSACTIONS ON ELECTRON DEVICES | 2005年 / 52卷 / 05期
关键词：
coupled-cavity traveling wave tube (CCTWT); microwave amplifiers; traveling wave tubes (TWT); vacuum electron devices;
D O I：
10.1109/TED.2005.845867
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：
Worldwide demand for high-power amplifiers for digital satellite communication at Ka-band frequencies between 27 and 31 GHz is steadily increasing (2003). Communication and Power Industries (CPI) has developed a 500-W periodic permanent magnet focused coupled-cavity traveling wave tube (TWT) for conduction-cooled amplifier systems, which is being introduced into the commercial satellite communication market. The TWT is capable of greater than 500-MHz instantaneous bandwidth and is cathode voltage tunable from 28.3 to 30 GHz. The TWT may be operated saturated at the 500-W output power level or backed off from saturation in the linear mode. CPI's Satcom Division has integrated the TWT into a conduction-cooled transmitter box suitable for antenna hub-mount applications. The amplifier uses predistortion networks to provide a high degree. of linear response when operated in output power back-off mode.
引用
收藏
页码：665 / 668
页数：4
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