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This paper presents a five-stage wideband digital controlled variable gain amplifier (DVGA). A bandwidth extended technique is proposed in this design to enhance gain flatness and enlarge gain range in high operating frequency. DC offset cancellation in this design helps to enhance the performance of proposed DVGA. The design is simulated using a commercial 0.18µm SiGe BiCMOS technology. The DVGA...
This paper presents the design and validation of a compact high-performance digitally controlled variable-gain amplifier (DVGA). By using MOS switches and a linearizer, the designed DVGA demonstrates high linearity and gain flatness over a wide gain control range. The 6-bit DVGA is designed in a commercial 0.18- SiGe BiCMOS technology achieving a variable gain range from 16.5 to 6...
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