Title :
Design of coaxial transformer for ku-band short length TWT
Author :
Tomar, R.S. ; Pardeep ; Ghosh, S. ; Sharma, S.M. ; Sharma, R.K. ; Srivastava, V.
Author_Institution :
A constituent Lab. of Council of Sci. & Ind. Res., Central Electron. Eng. Res. Inst. (CEERI), Pilani, India
Abstract :
To extract rf power from a traveling wave tube (TWT), proper impedance transformation of the helix slow-wave structure (SWS) has to be done through coaxial couplers to a standard 50 ohm connector. Mismatch of impedance gives poor return loss (RL) behavior and leads to reflection of rf power causing oscillation and destruction of the TWT. In this paper authors have presented design of a co-axial coupler for high power space TWT using CST Microwave Studio and ANSOFT HFSS.
Keywords :
electric connectors; slow wave structures; transformers; ANSOFT HFSS; CST Microwave Studio; coaxial coupler; coaxial transformer; connector; helix slow-wave structure; impedance transformation; ku-band short length TWT; oscillation; resistance 50 ohm; return loss behavior; space TWT; traveling wave tube; Conductors; Electron tubes; Impedance; Microwave circuits; Microwave devices; Microwave oscillators; Radio frequency; Center conductor; Helix TWT; Lossy ceramic;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2011 IEEE International
Conference_Location :
Bangalore
Print_ISBN :
978-1-4244-8662-5
DOI :
10.1109/IVEC.2011.5746987
