Title :
Planar noncontacting short circuits for millimeter-wave and submillimeter-wave applications
Author :
Newman, T. ; Ng, Kwong T.
Author_Institution :
Millitech. Corp., South Deerfield, MA, USA
Abstract :
Adjustable planar noncontacting short circuits for both rectangular and circular waveguides have been designed and tested. The planar configuration allows these short circuits to be fabricated photolithographically, therefore reducing fabrication cost and eliminating the machining tolerance requirements of conventional noncontacting short circuits. Scale model tests show that the new short circuits can offer a return loss <0.1 dB and linear phase variation over a single mode bandwidth. Successful application of a planar short circuit in a 300-365-GHz mixer further demonstrates the usefulness of these short circuits at high frequency.<>
Keywords :
circular waveguides; mixers (circuits); rectangular waveguides; submillimetre wave devices; tuning; waveguide components; 0.1 dB; 300 to 365 GHz; EHF; THF mixer; adjustable type; circular waveguides; linear phase variation; millimeter-wave; planar noncontacting short circuits; reactive tuners; single mode bandwidth; submillimeter-wave applications; Bandwidth; Circuit testing; Coaxial components; Coupling circuits; Frequency; Machining; Millimeter wave circuits; Planar waveguides; Rectangular waveguides; Submillimeter wave circuits;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
