Title :
Radiation characteristics of flexible circular dielectric waveguides in Q-band
Author :
Kim, Ki Young ; Sohn, Jong Ryul ; Hyun Ju Seo ; Han, Jin-Won ; Tae, Heung-Sik ; Lee, Jeong-Hae
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Kyungpook Nat. Univ., Taegu, South Korea
Abstract :
In the millimeter wave frequencies of the Q-band, radiation losses of flexible circular PTFE rod and tube waveguides are measured with the variations of parameters such as operating frequencies, dielectric areas of guiding cross sections, curvature radii of the bending, and bend profiles of the S- and U-bend. We determine the radiation losses of the flexible waveguides, which current theory is not able to predict in the regime of some small curvature radius, and the lower limits of the curvature radii at which additional losses are not generated. The results can be explained by the concepts of the fractional power flows in the surrounding free space region of the guides.
Keywords :
circular waveguides; dielectric waveguides; millimetre wave devices; PTFE rod; Q-band; S-bend; U-bend; bend profiles; curvature radii of bending; dielectric areas; flexible circular dielectric waveguides; fractional power flows; guiding cross sections; millimeter wave frequencies; operating frequencies; radiation losses; surrounding free space region; tube waveguides; Dielectric loss measurement; Dielectric losses; Dielectric measurements; Frequency measurement; Load flow; Loss measurement; Millimeter wave communication; Millimeter wave measurements; Millimeter wave technology; Polymers;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2002. IEEE
Print_ISBN :
0-7803-7330-8
DOI :
10.1109/APS.2002.1017016
