Title :
Experimental demonstration of the effect of groove shape on the wave properties of the helical groove waveguide
Author :
Wei, Yanyu ; Wang, Wenxiang ; Sun, Jiahong ; Jia, Baofu ; Sinha, A.K. ; Liu, Sheng-Gang ; Park, Gun-Sik
Author_Institution :
Sch. of Phys., Seoul Nat. Univ., South Korea
Abstract :
This letter presents a simple and general fabrication method for helical groove waveguides (HGWs) with successful fabrication of a number of novel HGWs such as the hole-gap-shaped groove HGW, the swallow-tailed groove one, the trapezoid groove one and the ridge-loaded rectangular one. Also, measurements on these structures have been carried out to determine their dispersion properties. The experimental results agree well with the theoretical results and demonstrate the large influence of groove shape on the dispersion characteristics of the structures.
Keywords :
dispersion (wave); gyrotrons; helical waveguides; millimetre wave tubes; rectangular waveguides; travelling wave tubes; dispersion properties; fabrication method; groove shape; gyro-TWT; helical groove waveguide; hole-gap-shaped groove HGW; millimeter wave traveling wave tube; ridge-loaded rectangular waveguide; swallow-tailed groove waveguide; trapezoid groove waveguide; wave properties; Dispersion; Electromagnetic waveguides; Millimeter wave communication; Millimeter wave radar; Millimeter wave technology; Optical device fabrication; Physics; Rectangular waveguides; Shape; Sun;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2003.818518
