电子科技大学学报
電子科技大學學報
전자과기대학학보
JOURNAL OF UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA
2013年
5期
688-693
,共6页
刘洋%徐进%刘漾%赖剑强%许雄%沈飞%黄民智%唐涛%魏彦玉%宫玉彬
劉洋%徐進%劉漾%賴劍彊%許雄%瀋飛%黃民智%唐濤%魏彥玉%宮玉彬
류양%서진%류양%뢰검강%허웅%침비%황민지%당도%위언옥%궁옥빈
耦合腔行波管%Ka波段%粒子模拟%重入式双交错梯形线%慢波结构
耦閤腔行波管%Ka波段%粒子模擬%重入式雙交錯梯形線%慢波結構
우합강행파관%Ka파단%입자모의%중입식쌍교착제형선%만파결구
coupled-cavity traveling-wave tube%Ka-band%particle-in-cell%reentrant double staggered ladder%slow-wave structure
利用粒子模拟技术对Ka波段耦合腔行波管的非线性互作用现象进行了研究。互作用电路采用的是重入式双交错梯形线耦合腔慢波结构，设计了匹配良好的高频耦合系统，并建立了一个基于CPI的Ka波段耦合腔行波管的三维电路模型。粒子模拟结果表明，当采用和CPI管子相同的电气参数和色散特性时，该管能在28.3～30 GHz的频率范围内有大于550 W的饱和平均输出功率，瞬时带宽大于600 MHz，相应的饱和增益和电子效率分别大于33 dB和8.39%。上述结果与CPI的测试结果吻合良好，证明了设计方案的可行性以及粒子模拟能较准确地对耦合腔行波管的工作性能进行估计。
利用粒子模擬技術對Ka波段耦閤腔行波管的非線性互作用現象進行瞭研究。互作用電路採用的是重入式雙交錯梯形線耦閤腔慢波結構，設計瞭匹配良好的高頻耦閤繫統，併建立瞭一箇基于CPI的Ka波段耦閤腔行波管的三維電路模型。粒子模擬結果錶明，噹採用和CPI管子相同的電氣參數和色散特性時，該管能在28.3～30 GHz的頻率範圍內有大于550 W的飽和平均輸齣功率，瞬時帶寬大于600 MHz，相應的飽和增益和電子效率分彆大于33 dB和8.39%。上述結果與CPI的測試結果吻閤良好，證明瞭設計方案的可行性以及粒子模擬能較準確地對耦閤腔行波管的工作性能進行估計。
이용입자모의기술대Ka파단우합강행파관적비선성호작용현상진행료연구。호작용전로채용적시중입식쌍교착제형선우합강만파결구，설계료필배량호적고빈우합계통，병건립료일개기우CPI적Ka파단우합강행파관적삼유전로모형。입자모의결과표명，당채용화CPI관자상동적전기삼수화색산특성시，해관능재28.3～30 GHz적빈솔범위내유대우550 W적포화평균수출공솔，순시대관대우600 MHz，상응적포화증익화전자효솔분별대우33 dB화8.39%。상술결과여CPI적측시결과문합량호，증명료설계방안적가행성이급입자모의능교준학지대우합강행파관적공작성능진행고계。
The particle-in-cell simulations of a Ka-band coupled-cavity traveling-wave tube (CCTWT) were performed to investigate the nonlinear interaction of the tube. The interaction circuit employs the double staggered ladder line coupled-cavity slow-wave structure. Combined with the design of well-matched high frequency coupling system, a 3-D circuit model based on CPI’s Ka-band CCTWT was constructed. The particle-in-cell simulation results show that the tube can produce saturated average output power over 550 watts with greater than 600 MHz instantaneous bandwidth ranging from 28.3 GHz to 30 GHz when we adopt the similar parameters as CPI’s Ka-band CCTWT, such as beam voltage, beam current and the slow-wave structure dispersion characteristics. The corresponding saturated gain and beam efficiency can reach over 33 dB and 8.39%, respectively. These results are in good agreement with the experimentally measured ones of the CPI’s Ka-band CCTWT, which suggest that our design scheme is feasible and the CST PIC solver can accurately predict the performance of the CCTWT.
