Ka波段寬頻帶高線性空間行波管研制
doi: 10.11999/JEIT161267
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1.
(中國(guó)科學(xué)院電子學(xué)研究所 北京 100190) ②(上海航天技術(shù)研究院804所 上海 201109)
基金項(xiàng)目:
國(guó)家自然科學(xué)基金(61401430)
Development of Ka-band Broadband, High-linearity Space Traveling Wave Tube
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1.
(Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China)
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2.
(Shanghai Academy of Spaceflight Technology 804, Shanghai 201109, China)
Funds:
The National Natural Science Foundation of China (61401430)
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摘要: 該文對(duì)Ka波段空間行波管寬頻帶、高線性、高效率的慢波系統(tǒng)進(jìn)行設(shè)計(jì)，通過(guò)動(dòng)態(tài)漸變技術(shù)實(shí)現(xiàn)了低相位失真、高效率的指標(biāo)要求。在此設(shè)計(jì)基礎(chǔ)上研制的Ka波段空間行波管實(shí)現(xiàn)了寬頻帶(25~27 GHz)、低非線性失真(非線性相移40 , AM/PM2.86/dB ，三階交調(diào)10.39 dBc)、高效率(總效率51.7%)。經(jīng)數(shù)傳系統(tǒng)測(cè)試，誤碼pe優(yōu)于10-6 的情況下C/N0有2.4 dB裕度，滿足了衛(wèi)星數(shù)傳系統(tǒng)對(duì)多通道并行傳輸方案的工作需求。Abstract: In this paper, the design of Ka-band broadband, high-linearity and high-efficiency slow-wave system is proposed for Space Traveling Wave Tube (TWT). The dynamic phase-shifting technique is used to achieve low phase distortion and high efficiency. Based on this design, the Ka-band TWT is developed to realize wideband (25~27 ), low nonlinear distortion (non-linear phase shift40, AM / PM2.86/dB, third order intermodulation10.39 dBc), high efficiency (total efficiency51.7%). By the digital transmission system test, the error codepe is better than10-6 in the case ofC/N0 2.4 dB margin, it meets the satellite data transmission system for multi-channel parallel transmission program work requirements.
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Key words:
- Space Traveling Wave Tube (TWT) /
- Ka band /
- Wide bandwidth /
- High linearity
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