Title :
A method for measuring magnitude and phase of harmonics generated in nonlinear microwave two-ports
Author_Institution :
ETH Zurich, Switzerland
Abstract :
A method for simultaneously measuring magnitude and phase of the harmonics generated by a microwave two-port is described. The measurement system has a dynamic range superior to time-domain measurements due to its reduced noise bandwidth. Sample measurements on a GaAs MESFET under large-signal operation are presented. The system allows the measurement of harmonics with a phase accuracy of about 10 degrees at 20 GHz. All types of microwave two-ports can be characterized without knowledge of their internal structure. The system can be built for any frequency less than 40 GHz where a vector generator with multiplier is available.<>
Keywords :
Schottky gate field effect transistors; harmonics; multiport networks; nonlinear network analysis; phase measurement; 20 GHz; GaAs; MESFET; dynamic range; harmonics; large-signal operation; magnitude; measurement system; nonlinear microwave two-ports; phase; phase accuracy; vector generator; Bandwidth; Dynamic range; Gallium arsenide; Microwave generation; Microwave measurements; Microwave theory and techniques; Noise measurement; Noise reduction; Phase measurement; Time domain analysis;
Conference_Titel :
Microwave Symposium Digest, 1988., IEEE MTT-S International
Conference_Location :
New York, NY, USA
DOI :
10.1109/MWSYM.1988.22018
