Title :
Design and implementation of MW balanced amplifier using branch-line couplers
Author :
Badr, Khamis H. ; El-Motaafy, Hosny A. ; Badawy, El-Sayed A. ; Bayoumy, M.E.-S.A.
Author_Institution :
Air Defence Coll., Cairo, Egypt
Abstract :
The design and implementation of MW balanced amplifier operating at 3.5 GHz have been performed using microstrip technology. A duroid substrate of relative permittivity 2.2, and Motorola MRF-9411, L packaged MW transistors are used. A network computer analysis program has been developed to asses the amplifier performance, and its results are compared to the practical measurements of the implemented schematic. The amplifier provides a power gain of 9 dB with input and output VSWR of 1.65, and 1.35 respectively. Such an amplifier can be used in satellite communication, electronic support measure (ESM) receivers, and airborne radar
Keywords :
airborne radar; circuit CAD; circuit analysis computing; differential amplifiers; electronic countermeasures; microstrip couplers; microwave amplifiers; microwave receivers; microwave transistors; satellite communication; 3.5 GHz; 8 dB; CAD; L packaged microwave transistors; Motorola MRF-9411; airborne radar; amplifier performance; branch line couplers; duroid substrate; electronic support measure receivers; measurements; microstrip technology; microwave balanced amplifier; network computer analysis program; power gain; relative permittivity; satellite communication; Computer networks; Couplers; Educational institutions; Frequency; Microstrip; Power amplifiers; Power transmission lines; Scattering parameters; Stability; Transducers;
Conference_Titel :
Radio Science Conference, 1996. NRSC '96., Thirteenth National
Conference_Location :
Cairo
Print_ISBN :
0-7803-3656-9
DOI :
10.1109/NRSC.1996.551426
