Title :
Optimization of microwave active filters based on cascaded composite GaAs FETs
Author :
El-Shahat, I.A. ; Soliman, F.A.S. ; Al-Kabbani, A.S.S. ; Farag, F.M.
Author_Institution :
Nucl. Mater. Authority, Cairo, Egypt
Abstract :
The design, construction, and analysis of a microwave active filters all-or band-pass were described using the NE71083 GaAs FETs and lumped circuit components. In addition to optimizing the passive element values, it was necessary to replace each FET with the composite transistor to achieve a better flat frequency response. Besides, cascade networks were introduced for the design and construction of second-degree all-or band-pass filters for the realization of higher order filters. A computer-simulated design has illustrated the feasibility of the cascade composite GaAs FETs synthesis approach. Finally, illustrative examples were given for both filters
Keywords :
III-V semiconductors; active filters; all-pass filters; band-pass filters; cascade networks; circuit CAD; circuit analysis computing; circuit optimisation; field effect MMIC; gallium arsenide; microwave filters; 6 to 12 GHz; GaAs; III-V semiconductors; MMIC; NE71083 FET; cascade networks; cascaded composite GaAs FET; composite transistor; computer-simulated design; filter optimization; flat frequency response; higher order filters; lumped circuit components; microwave active filters; passive elements; second-degree all-pass filters; second-degree band-pass filters; Active filters; Band pass filters; Frequency response; Gallium arsenide; MMICs; Microwave FETs; Microwave circuits; Microwave filters; Microwave frequencies; Microwave transistors;
Conference_Titel :
Radio Science Conference, 1996. NRSC '96., Thirteenth National
Conference_Location :
Cairo
Print_ISBN :
0-7803-3656-9
DOI :
10.1109/NRSC.1996.551424
