Title :
A millimeter-wave vector network analyzer
Author :
Bellantoni, J.V. ; Dalman, G.C. ; Compton, R.C.
Author_Institution :
Sch. of Electr. Eng., Cornell Univ., Ithaca, NY, USA
Abstract :
A network analyzer for making accurate measurements in the 75-110-GHz band is presented. The analyzer operates by sampling forward and reverse signals using back-to-back directional couplers. The tapped signals are combined in a hybrid coupler which feeds the sum and difference into two detector diodes. An additional two measurements are obtained by switching a phase delay into one of the paths. These four measurements are manipulated using six-port theory to calculate the complex reflection coefficient. A 27-40-GHz prototype operating as a reflectometer is demonstrated. Calibrations and measurements are performed interactively with the aid of a Macintosh II personal computer equipped with a high-resolution color display.<>
Keywords :
computerised instrumentation; microcomputer applications; microcomputers; microwave measurement; network analysers; 27 to 40 GHz; 75 to 110 GHz; EHF; Macintosh II personal computer; SHF prototype; back-to-back directional couplers; complex reflection coefficient; high-resolution color display; hybrid coupler; millimeter-wave vector network analyzer; reflectometer; six-port theory; tapped signals; Delay; Detectors; Diodes; Directional couplers; Feeds; Millimeter wave measurements; Phase measurement; Reflection; Sampling methods; Signal analysis;
Conference_Titel :
Microwave Symposium Digest, 1988., IEEE MTT-S International
Conference_Location :
New York, NY, USA
DOI :
10.1109/MWSYM.1988.22139
