Title :
Subharmonic mixer with planar Schottky diodes in a novel split-block at 200-240 GHz
Author :
Raisanen, A.V. ; Dengler, R.J. ; Mehdi, I. ; Oswald, J.E. ; Choudhury, D. ; Siegel, P.H.
Author_Institution :
Radio Lab., Helsinki Univ. of Technol., Espoo, Finland
Abstract :
A broadband subharmonic mixer utilizing a planar antiparallel Schottky barrier diode pair has been developed for 220 GHz. The mixer is based on a novel split-waveguide block design consisting of only two central pieces and two tuner drivers which provide series and parallel tuning elements at both the local oscillator and signal frequency. The single sideband noise temperature is just below 2000 K from 210-235 GHz when an IF at 1.5 GHz is used. The conversion loss is 9.5-10 dB. A fixed-tuned useable IF bandwidth of more than 10 GHz was achieved with the new block design.<>
Keywords :
Schottky-barrier diodes; mixers (circuits); semiconductor device noise; solid-state microwave devices; tuning; waveguide components; 10 GHz; 210 to 235 GHz; 220 GHz; 9.5 to 10 dB; IF bandwidth; broadband subharmonic mixer; conversion loss; parallel tuning; planar antiparallel Schottky barrier diode pair; series tuning; single sideband noise temperature; split-waveguide block; tuner drivers; Acoustical engineering; Bandwidth; Frequency; Local oscillators; Schottky barriers; Schottky diodes; Signal design; Temperature; Tuners; Tuning;
Conference_Titel :
Microwave Symposium Digest, 1994., IEEE MTT-S International
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-7803-1778-5
DOI :
10.1109/MWSYM.1994.335241
