1.25 GHz – 3.3 GHz broadband solid state power amplifier for L and S bands applications

Mohamed Ribate, Rachid Mandry, Jamal Zbitou, Larbi El Abdellaoui, Ahmed Errkik, Mohamed Latrach


The research of a single stage broadband solid state power amplifier based on
ATF13876 transistor, which operates in the frequency ranging from 1.25 GHz
 - 3.3 GHz is presented in this paper. To achieve the broadband performance of
the operating bandwidth, a multi-section quarter wave impedance transformer
and an approximate transformation of previously synthesized lumped elements
into transmission lines are adopted. With neatly design of broadband matching
networks and biasing circuit, excellent matching performances and
unconditionally stability are achieved over the whole operating bandwidth
with a maximum gain of 17.2 dB. The large signal simulation shows that the
proposed circuit reaches a saturated output power of 18.12 dBm with a
maximum PAE of 27.55% and a 1-dB compression point at 5 dBm input power
level. Considering the wide frequency coverage, the features of the proposed
design compares favorably with the contemporary state-of-the-art.


Broadband Power Amplifier; Solid State; Impedance Matching; L and S Bands; GaAs

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DOI: http://doi.org/10.11591/ijece.v9i5.pp3633-3641
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ISSN 2088-8708, e-ISSN 2722-2578