Title :
Low-loss sapphire waveguides for 75-110 GHz frequency range
Author :
Lioubtchenko, Dmitri ; Dudorov, Sergey ; Mallat, Juha ; Tuovinen, Jussi ; Räisänen, Antti V.
Author_Institution :
Radio Lab., Helsinki Univ. of Technol., Espoo, Finland
fDate :
6/1/2001 12:00:00 AM
Abstract :
Low-loss dielectric waveguides are promising for use instead of metal ones, but problems in transitions have to be overcome. A simple and effective structure made of a monocrystalline sapphire waveguide has been designed. Experimental results at 75-110 GHz indicate good matching with metal waveguides (VSWR /spl les/1.13) and low insertion loss (0.05-0.35 dB for 47 mm dielectric section).
Keywords :
dielectric waveguides; losses; sapphire; waveguide transitions; 0.05 to 0.35 dB; 47 mm; 75 to 110 GHz; Al/sub 2/O/sub 3/; insertion loss; low-loss dielectric waveguides; low-loss sapphire waveguides; monocrystalline sapphire structure; transitions; Dielectric loss measurement; Dielectric losses; Dielectric materials; Directional couplers; Frequency; Insertion loss; Loss measurement; Optical waveguides; Waveguide components; Waveguide transitions;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/7260.928929
