Title :
A novel approach for the large signal analysis and optimisation of microwave frequency doublers
Author :
El-Rabaie, S. ; Stewart, J.A.C. ; Fusco, V.F. ; McKeown, J.J.
Author_Institution :
Dept. of Electr. & Electron. Eng., Queen´´s Univ., Belfast, UK
Abstract :
An approach is described for the large-signal analysis and optimization of microwave frequency doublers. A large-signal lumped-element model is used for an NE 71000 chip MESFET with a two-level harmonic balance program to analyze and optimize a target ideal doubler. A practical circuit is built to synthesize the ideal doubler requirement. To verify the method experimentally, a single-ended doubler operating from 7-14-GHz has been used as a demonstrator. Agreement between experiment and theory is excellent. The method described is transferable to multipliers of higher order, and to higher frequencies.<>
Keywords :
Schottky gate field effect transistors; circuit CAD; field effect transistor circuits; frequency multipliers; nonlinear network synthesis; semiconductor device models; solid-state microwave circuits; solid-state microwave devices; 7 to 14 GHz; NE 71000 chip MESFET; SHF; circuit optimisation; large signal analysis; large-signal lumped-element model; microwave frequency doublers; practical circuit; single-ended doubler; target ideal doubler; two-level harmonic balance program; Bonding; Current measurement; Discrete Fourier transforms; Frequency; Harmonic analysis; Linear circuits; MESFET circuits; Nonlinear equations; Signal analysis; Voltage;
Conference_Titel :
Microwave Symposium Digest, 1988., IEEE MTT-S International
Conference_Location :
New York, NY, USA
DOI :
10.1109/MWSYM.1988.22227
