Balanced amplifier is the structure proposed in this article, it provides better performance. In fact, the single amplifier meets the specification for noise figure and gain but fails to meet the return loss specification due to the large mis-matches on the input & outputs. To overcome this problem one solution is to use balanced amplifier topography. In this paper, a wide-band and highgain microwave balanced amplifier constituted with branch line coupler circuit is proposed. The amplifier is unconditionally stable in the band [9-13] GHz where the gain is about 20dB. The input reflection (S11) and output return loss (S22) at 11 GHz are -33.4dB and -33.5dB respectively.
Collaboration network of the authors
6 authors ·
6 co-authorship links
· 3 across different organisations
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Mohammed V University
Université Moulay Ismail de Meknes
Ecole Mohammadia d'Ingénieurs
Different organisations
Same organisation
Affiliation unknown
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