Title :
Study of Traveling Wave Tube With Folded-Waveguide Circuit Shielded by Photonic Crystals
Author :
Gong, Yubin ; Yin, Hairong ; Wei, Yanyu ; Yue, Lingna ; Deng, Mingjin ; Lu, Zhigang ; Xu, Xiong ; Wang, Wenxiang ; Liu, Pukun ; Liao, Fujiang
Author_Institution :
Vacuum Electron. Nat. Lab., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
fDate :
5/1/2010 12:00:00 AM
Abstract :
The design and simulated performance of a traveling-wave tube (TWT) constructed by combining a folded-waveguide (FW) slow-wave circuit with arrays of 2-D photonic crystals (PhC) are presented. Numerical results reveal that the Pierce interaction impedance of the FW circuit with PhCs is similar to the circuit without PhC arrays. The gain, output power, and efficiency of TWTs with and without PhCs are also similar when the circuit dimensions are identical; however, the TWT with PhCs can filter out nonoperating modes, which may improve the stability of the circuit shielded with PhCs when compared to the same circuit shielded by metal walls.
Keywords :
photonic crystals; slow wave structures; 2D photonic crystals; TWT; folded-waveguide circuit; metal walls; pierce interaction impedance; slow-wave circuit; traveling wave tube; Circuit simulation; Circuit stability; Electromagnetic scattering; Electromagnetic waveguides; Filters; Frequency; Impedance; Passband; Photonic crystals; Power generation; Folded waveguide (FW); photonic crystals (PhC); slow-wave structure (SWS); travelling-wave tube (TWT);
Journal_Title :
Electron Devices, IEEE Transactions on
DOI :
10.1109/TED.2010.2043176
