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In this paper, a low-power broadband automatic-gain-control (AGC) amplifier targeted for use in the Square Kilometer Array (SKA) is presented. The AGC is composed of an input power-match circuit, a linear-in-dB output variable gain amplifier (VGA), a power detector (PD), an error amplifier, a comparator and a loop filter. The input stage is power matched to 100 Ω differential source impedance, achieves...
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