Title :
Multi-Mode Coupling Wave Theory for Helically Corrugated Waveguide
Author :
Zhang, Liang ; He, Wenlong ; Ronald, Kevin ; Phelps, Alan D R ; Whyte, Colin G. ; Robertson, Craig W. ; Young, Alan R. ; Donaldson, Craig R. ; Cross, Adrian W.
Author_Institution :
Dept. of Phys., Univ. of Strathclyde, Glasgow, UK
Abstract :
Helically corrugated waveguide has been used in various applications such as gyro-backward wave oscillators, gyro-traveling wave amplifier and microwave pulse compressor. A fast prediction of the dispersion characteristic of the operating eigenwave is very important when designing a helically corrugated waveguide. In this paper, multi-mode coupling wave equations were developed based on the perturbation method. This method was then used to analyze a five-fold helically corrugated waveguide used for X-band microwave compression. The calculated result from this analysis was found to be in excellent agreement with the results from numerical simulation using CST Microwave Studio and vector network analyzer measurements.
Keywords :
electromagnetic coupling; helical waveguides; microwave amplifiers; microwave oscillators; network analysers; numerical analysis; perturbation techniques; CST microwave studio; X-band microwave compression; dispersion characteristic; five fold helically corrugated waveguide; gyro-backward wave oscillator; gyro-traveling wave amplifier; helically corrugated waveguide; microwave pulse compressor; multimode coupling wave equation; multimode coupling wave theory; numerical simulation; perturbation method; vector network analyzer measurement; Couplings; Dispersion; Equations; Mathematical model; Microwave theory and techniques; Waveguide theory; Coupling coefficients; coupling wave theory (CWT); dispersion curve; helically corrugated waveguide;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2011.2170848
