Analysis of Ridge-Loaded Folded-Waveguide Slow-Wave Structures for Broadband Traveling-Wave Tubes

作者：Sumathy M^*; Vinoy K J; Datta S K

来源：IEEE Transactions on Electron Devices, 2010, 57(6): 1440-1446.

DOI：10.1109/TED.2010.2045680

• Broadbanding
• equivalent circuit analysis
• folded-waveguide slow-wave structure (SWS)
• quasi-transverse-electromagnetic (quasi-TEM) analysis
• ridge loading

An E-plane serpentine folded-waveguide slow-wave structure with ridge loading on one of its broad walls is proposed for broadband traveling-wave tubes (TWTs) and studied using a simple quasi-transverse-electromagnetic analysis for the dispersion and interaction impedance characteristics, including the effects of the beam-hole discontinuity. The results are validated against cold test measurements, an approximate transmission-line parametric analysis, an equivalent circuit analysis, and 3-D electromagnetic modeling using CST Microwave Studio. The effect of the structure parameters on widening the bandwidth of a TWT is also studied.

• 出版日期2010-6