Title :
A Non-Contacting Tunable Waveguide Backshort for Terahertz Applications
Author :
Xu, Haiyong ; Liu, Zhiyang ; Smith, Charlie H., III ; Hesler, Jeffrey L. ; Deaver, Bascom S., Jr. ; Weikle, Robert M., II
Author_Institution :
Dept. of Phys., Virginia Univ., Charlottesville, VA
Abstract :
A non-contacting tunable backshort for terahertz applications is presented. In addition to improving the coupling between terahertz rectangular waveguide and planar microstrip feed structures, the new design addresses issues associated with the strict fabrication tolerance required for fixed backshorts operating at submillimeter wavelengths. The proposed backshort structure consists of periodic conducting patches supported by a dielectric substrate and its planar configuration is amenable to fabrication using standard photolithographic processing. Simulation results are presented for a 1.6 THz design and a scaled model of the backshort operating at V-band (50-75 GHz) is demonstrated and characterized to verify its operation
Keywords :
microstrip couplers; periodic structures; photolithography; rectangular waveguides; waveguide components; 1.6 THz; 50 to 75 GHz; dielectric substrate; fabrication tolerance; fixed backshorts; noncontacting backshort; periodic conducting patches; periodic structure; photolithographic processing; planar configuration; planar microstrip feed structures; rectangular waveguide; submillimeter wavelengths; tunable backshort; waveguide backshort; Application software; Circuits; Dielectric losses; Dielectric substrates; Frequency; Millimeter wave technology; Periodic structures; Rectangular waveguides; Reflection; Tuners; Non-contacting backshort; periodic structure; submillimeter wave; terahertz; waveguide;
Conference_Titel :
Microwave Symposium Digest, 2006. IEEE MTT-S International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-9541-7
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2006.249791
