Study of Traveling Wave Tube With Folded-Waveguide Circuit Shielded by Photonic Crystals

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 th...

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Veröffentlicht in:	IEEE transactions on electron devices 2010-05, Vol.57 (5), p.1137-1145
Hauptverfasser:	Gong, Yubin, Yin, Hairong, Wei, Yanyu, Yue, Lingna, Deng, Mingjin, Lu, Zhigang, Xu, Xiong, Wang, Wenxiang, Liu, PuKun, Liao, FuJiang
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Arrays Circuit properties Circuits Computer simulation Cutoff frequency Electric, optical and optoelectronic circuits Electromagnetic scattering Electronic circuits Electronic tubes, masers Electronics Exact sciences and technology Folded waveguide (FW) Frequency filters Fundamental areas of phenomenology (including applications) Gain Impedance Materials Metals Optical materials Optics Oscillators Photonic band gap Photonic bandgap materials Photonic crystals photonic crystals (PhC) Physics slow-wave structure (SWS) Stability Traveling wave tubes travelling-wave tube (TWT) Walls
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Zusammenfassung:	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.
ISSN:	0018-9383 1557-9646
DOI:	10.1109/TED.2010.2043176