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A broadband radio frequency (RF) variable gain amplifier (VGA) enhanced with a gain control and automatic input impedance matching is presented in this work. Due to the control loop, the gain is linear-in-magnitude versus the control input. Additionally, the control loop makes the circuit robust towards process and temperature variations of the transistors. The measured low phase variation versus...
This paper presents a CMOS voltage regulator employing an operational-amplifier operated from a 1.8V supply with very low current consumption, capable of delivering a stable regulated 1.4V output voltage with high enough current sourcing capability for the biasing of GaAs HBT RFIC power amplifiers, and subjected to strong RF perturbations. These features are particularly important in multi-technology...
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