A wideband planar helix slow-wave structure for millimeter-wave TWTs

被引：0
|
作者：
Zhao, Chen [1 ]
Aditya, Sheel [1 ]
Wang, Shaomeng [1 ]
Chua, Ciersiang [2 ]
机构：
[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore
[2] CST South East Asia Pte Ltd, Singapore 609916, Singapore
来源：
2015 IEEE INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC) | 2015年
关键词：
microfabrication; planar helix; slow wave structure; millimeter-wave TWTs;
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：
A wideband design of a slow-wave structure (SWS) consisting of planar helix with straight edge connections is proposed here. Dispersion is reduced by placing the metal shield close to the SWS, by including ground planes, and by reducing the amount of dielectric material. The design leads to an octave bandwidth centered at 30 GHz for the 'cold' Sws. The design can be implemented using microfabrication techniques. For a design with 150 periods and a 3750 V, 10 mA electron beam, a small-signal gain of 36 dB and a saturated output power of 6. 65 W is predicted at 30 GHz. The design approach appears promising for wideband millimeter-wave traveling tubes.
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页数：2
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