Please use this identifier to cite or link to this item:
Title: Temperature-compensated dB-linear digitally controlled variable gain amplifier with DC offset cancellation
Authors: Kumar, Thangarasu Bharatha
Ma, Kaixue
Yeo, Kiat Seng
Keywords: DRNTU::Engineering::Electrical and electronic engineering::Antennas, wave guides, microwaves, radar, radio
Issue Date: 2013
Source: Kumar, T. B., Ma, K., & Yeo, K. S. (2013). Temperature-Compensated dB-linear Digitally Controlled Variable Gain Amplifier With DC Offset Cancellation. IEEE Transactions on Microwave Theory and Techniques, 61(7), 2648-2661.
Series/Report no.: IEEE transactions on microwave theory and techniques
Abstract: This paper presents a compact digitally controlled variable gain amplifier (DVGA) with capabilities of both temperature compensated linear-in-decibel (dB-linear) gain control and DC offset cancellation (DCOC) without making use of either the feedback or the feed-forward loop. The proposed DVGA design is a 3 stage inductorless cascaded amplifier that is integrated with a temperature compensated dB-linear gain control, a DCOC, an output common mode feedback (CMFB), a 6-bit digital gain control (with a 64 step resolution), a power shutdown mode, and a linearizer for improving the 1-dB gain compression point. The design is fabricated using a commercial 0.18-m SiGe BiCMOS technology. The DVGA has a measured gain range of 18.4 dB with an average step size of 0.3 dB, a 3-dB bandwidth from 2 MHz to 1.9 GHz with a ±0.75 dB gain flatness from 2.75 MHz to 1.2 GHz, an input 1-dB gain compression point better than -12.5 dBm, an input return loss better than 12 dB, an output return loss better than 16 dB, and a DC power consumption of 12.2 mW from a 1.8 V supply.
DOI: 10.1109/TMTT.2013.2261086
Rights: © 2013 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at: [].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

Google ScholarTM



Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.