Relevant bibliographies by topics / Variable gain amplifiers

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Variable gain amplifiers'

Author: Grafiati
Published: 4 June 2021
Last updated: 9 February 2022

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Journal articles on the topic "Variable gain amplifiers"

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Bai, Chunfeng, Jianhui Wu, and Xiaoying Deng. "A Review of CMOS Variable Gain Amplifiers and Programmable Gain Amplifiers." IETE Technical Review 36, no. 5 (August 22, 2018): 484–500. http://dx.doi.org/10.1080/02564602.2018.1507766.

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Liu, W., W. Liu, and S. K. Wei. "CMOS exponential-control variable gain amplifiers." IEE Proceedings - Circuits, Devices and Systems 151, no. 2 (2004): 83. http://dx.doi.org/10.1049/ip-cds:20040111.

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Borel, Andžej. "DEVELOPMENT AND INVESTIGATION OF INPUT AMPLIFIER FOR THE OSCILOSCOPE." Mokslas - Lietuvos ateitis 12 (January 20, 2020): 1–5. http://dx.doi.org/10.3846/mla.2020.11420.

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Digital oscilloscope’s structure has analog signal acquisition circuit, which transforms signal’s amplitude to fit ADC dynamic range. This circuit is commonly called oscilloscope’s vertical or front-end amplifier. Difficulty in designing front-end amplifiers in GHz range largely affects higher frequency range oscilloscope’s price. This work is focused on designing a front-end amplifier using discrete and openly sold components. We propose a design for attenuator, buffer, variable gain circuits. Amplifier’s prototype is designed. Main characteristics of the amplifier were measured. Measured bandwidth is 3 GHz. Amplifier’s gain and attenuation can support vertical scale sensitivity range from 10 mV/div to 1 V/div. Step response distortion is under 10 %. SMD and PTH relay model attenuators were evaluated. In this paper we review oscilloscope’s front-end purpose and structure. We review amplifiers design and provide the results of experimental measurements.
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DUONG, Q. H., C. W. KIM, and S. G. LEE. "All CMOS Low-Power Wide-Gain Range Variable Gain Amplifiers." IEICE Transactions on Electronics E91-C, no. 5 (May 1, 2008): 788–97. http://dx.doi.org/10.1093/ietele/e91-c.5.788.

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Huang, Yan-Yu, Wangmyong Woo, Hamhee Jeon, Chang-Ho Lee, and J. Stevenson Kenney. "Compact Wideband Linear CMOS Variable Gain Amplifier for Analog-Predistortion Power Amplifiers." IEEE Transactions on Microwave Theory and Techniques 60, no. 1 (January 2012): 68–76. http://dx.doi.org/10.1109/tmtt.2011.2175234.

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Ciubotaru, A. A. "A precision control circuit for variable-gain amplifiers." IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications 43, no. 9 (1996): 779–82. http://dx.doi.org/10.1109/81.536747.

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Juang, C., S. F. Shiue, S. Y. Tsai, and J. N. Yang. "Transimpedance amplifiers using three cascade variable inverter gain stages." Analog Integrated Circuits and Signal Processing 49, no. 3 (September 11, 2006): 299–302. http://dx.doi.org/10.1007/s10470-006-9706-0.

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Belousov, E. O., and A. G. Timoshenko. "Method for extending the bandwidth of variable gain amplifiers." Russian Microelectronics 43, no. 7 (November 14, 2014): 459–61. http://dx.doi.org/10.1134/s1063739714070026.

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Schindeler, Ryan, Daniel Cleveland, and Keyvan Hashtrudi-Zaad. "Experimental evaluation of computer-controlled variable gain analog amplifiers." Analog Integrated Circuits and Signal Processing 86, no. 3 (January 21, 2016): 449–58. http://dx.doi.org/10.1007/s10470-016-0690-8.

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Kong, Lingshan, Yong Chen, Haohong Yu, Chirn Chye Boon, Pui-In Mak, and Rui P. Martins. "Wideband Variable-Gain Amplifiers Based on a Pseudo-Current-Steering Gain-Tuning Technique." IEEE Access 9 (2021): 35814–23. http://dx.doi.org/10.1109/access.2021.3062360.

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Dissertations / Theses on the topic "Variable gain amplifiers"

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Jha, Nand Kishore. "Design of a complementary silicon-germanium variable gain amplifier." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/24614.

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Oksasoglu, Ali 1960. "GAIN-BANDWIDTH EFFECTS IN THE STATE-VARIABLE FILTERS." Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/276419.

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Häkkinen, J. (Juha). "Integrated RF building blocks for base station applications." Doctoral thesis, University of Oulu, 2003. http://urn.fi/urn:isbn:951426908X.

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Abstract This thesis studies the level of performance achievable using today's standard IC processes in the integrated RF subcircuits of the modern GSM base station. The thesis concentrates on those circuit functions, i.e. I/Q modulators, variable gain amplifiers and frequency synthesizers, most relevant for integration in the base station environment as pinpointed by studying the receiver/transmitter architectures available today. Several RF integrated circuits have been designed, fabricated and their level of performance measured. All main circuits were fabricated in a standard double-metal double-poly 1.2 and 0.8 μm BiCMOS process. Key circuit structures and their measured properties are: 90° phase shifter with ±1° phase error with VCC = 4.5…5.5 V and T = -10…+85 °C, I/Q modulator suitable for operation at output frequencies from 100 MHz to 1 GHz and baseband frequencies from 60 to 500 kHz (2.0 mm × 2.0 mm, 100 mA, 5.0 V) with LO suppression of 38 dBc and image rejection of 41 dBc, temperature compensated DC to 1.5 GHz variable gain amplifier (1.15 mm × 2.00 mm, 100 mA, 5.0 V) with a linear 50 dB gain adjustment range, maximum gain of 18.5 dB and gain variation of 1 dB up to 700 MHz over the whole operating conditions range of VCC = 4.5…5.5 V and T = -10…+85 °C, a complete bipolar semicustom synthesizer (90…122 mA, 5.0 V) and two complete full-custom BiCMOS synthesizer chips including all building blocks of a PLL-based synthesizer except for the voltage controlled oscillator and the loop filter. The synthesizers include circuit structures such as ∼2 GHz multi-modulus divider and low-noise programmable phase detector/charge pump (18.7 pA/√Hz at Iout = 500 μA) and have an exemplar phase noise performance of -110 dBc/Hz at 200 kHz offset. One of the main problems of the integer-N PLL based synthesizer when used in a multichannel telecommunications system is the level of spurious signals at the output, when the synthesizer is optimised for fast frequency switching. Therefore, a method using only two current pulses to make the frequency step response of the loop faster, thus allowing a narrower loop bandwidth to be used for additional spur suppression, is proposed. The operation of the proposed speed-up method is analysed mathematically and verified by measurements of an existing RF-IC synthesizer operating at 800 MHz. Measurements show that simple current pulses can be used to speed up the channel switching of a practical RF synthesizer having a frequency step time in the tens of μs range. In the example, a 7.65 MHz frequency step was made seven times faster using the proposed method.
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Paro, Filho Pedro Emiliano. "A variable-gain transimpedance amplifier for MEMS-based oscillators = Um amplificador de transimpedância de ganho variável para aplicação em osciladores baseados em MEMS." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/259292.

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Orientador: José Alexandre Diniz
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação
Made available in DSpace on 2018-08-20T16:11:38Z (GMT). No. of bitstreams: 1 ParoFilho_PedroEmiliano_M.pdf: 39204453 bytes, checksum: 8ea6c789b126029d1ff5b579bdd25102 (MD5) Previous issue date: 2012
Resumo: Um amplificador de transimpedância (TIA) de ganho variável é apresentado. Implementado em tecnologia 0,18 'mi'm, o projeto relatado possui a finalidade de prover um amplificador de sustentação para osciladores baseados em ressonadores do tipo MEMS (Micro-Electro-Mechanical System). Entre outros, as peculiaridades de projeto envolvem um desafiante compromisso entre Ganho, Largura de Banda, Ruído e Consumo de potência. Sendo assim, o amplificador foi implementado através do cascateamento de quatro estágios de ganho similares, lançando-se mão de realimentação do tipo shunt-shunt para diminuir as impedâncias de entrada e saída. Através do emprego de um estágio de ganho variável, uma alta faixa dinâmica de ganho é alcançada (53 dB), com um ganho máximo de transimpedância de 118 dB'ômega'...Observação: O resumo, na íntegra, poderá ser visualizado no texto completo da tese digital
Abstract: A variable gain Transimpedance Amplifier (TIA) is presented. Realized in 0.18 'mi'm technology, this amplifier was conceived with the purpose of providing oscillation sustaining for Micro-Electro-Mechanical System (MEMS) based oscillators. Facing a quite challenging trade-off between Gain, Bandwidth, Noise and Power consumption, the TIA was implemented through the cascade of four similar gain stages, with the application of shunt-shunt feedback to lower both input and output resistances. With the employment of a variable-gain stage, this TIA presents a large gain tunability of 53 dB, with a also large maximum transimpedance gain of 118 dB'omega'...Note: The complete abstract is available with the full electronic document
Mestrado
Eletrônica, Microeletrônica e Optoeletrônica
Mestre em Engenharia Elétrica
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Rahmatian, Behnoosh. "A 75-dB digitally programmable CMOS variable gain amplifier." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/32248.

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A 75-dB DIGITALLY PROGRAMMABLE CMOS VARIABLE GAIN AMPLIFIER Variable-gain amplifiers (VGAs) are essential building blocks of many communication systems. In this thesis, a monolithic low-power digitally programmable VGA with 75dB of gain range is presented. The VGA is targeted for power line communication systems in particular for automotive application; however, it is a generic block that can be use in other applications. The core of the design is based on the low-distortion source-degenerated differential amplifier structure. A gm-boosting circuit is also used to provide higher gain and improve gain accuracy. In this work, to control the gain a new technique is used which is based on digitally controlling: 1) the source-degeneration resistance, and 2) an additional resistance between the differential output nodes of each gain stage. The changes in the source-degeneration resistance handle the coarse tuning, and the changes in the latter resistance are used for fine gain tuning. The overall VGA consists of three such gain stages. As a proof of concept, a single gain stage with a gain range of 24dB and programmable in 2dB gain steps has been fabricated in a 0.18μm CMOS technology. The chip is tested and measurement results are obtained. Based on these measurement results, the design of the gain stage is optimized and a three-stage 75dB VGA is designed. Each stage has a digitally tunable gain range of 25dB, and fine gain tuning of 2.5dB per step. The bandwidth of the VGA is higher than 140MHz, and the gain error is less than 0.3dB. The overall VGA draws 6.5mA from a 1.8V supply. The noise figure of the system at maximum gain is 12.5dB, and the IIP3 is 14.4dBm at minimum gain. These performance parameters are either better or compare favorably with the reported state-of-the-art VGAs.
Applied Science, Faculty of
Electrical and Computer Engineering, Department of
Graduate
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Krishnanji, Sivasankari. "Design of a variable gain amplifier for an ultrawideband receiver." Texas A&M University, 2005. http://hdl.handle.net/1969.1/2576.

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A fully differential CMOS variable gain amplifier (VGA) has been designed for an ultra-wideband receiver. The VGA comprises of two variable gain stages followed by a post amplifier stage. The interface between the digital control block and the analog VGA is formed by a digital-to-analog converter and an exponential voltage generator. The gain of the VGA varies dB-linearly from 0 to 52 dB with respect to the control voltage. The VGA is operated in open loop with a bandwidth greater than 500 MHz throughout the gain range to cater to the requirements of the ultra-wideband system. The noise-to-power ratio of the VGA is -23.9 dB for 1Vp-p differential input signal in the low gain setting, and the equivalent input referred noise is 1.01 V2 for the high gain setting. All three stages use common mode feedback to fix and stabilize the output DC levels at a particular voltage depending on the input common-mode requirement of the following stage. DC offset cancellation has also been incorporated to minimize the input referred DC offset caused by systematic and random mismatches in the circuit. Compensation schemes to minimize the effects of temperature, supply and process variations have been included in the design. The circuit has been designed in 0.18??m CMOS technology, and the post layout simulations are in good agreement with the schematic simulations.
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Opperman, Tjaart Adriaan Kruger. "A 5 GHz BiCMOS I/Q VCO with 360° variable phase outputs using the vector sum method." Diss., Pretoria : [s.n.], 2009. http://upetd.up.ac.za/thesis/available/etd-04082009-171225/.

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Thesis (M.Eng.(Microelectronic Engineering))--University of Pretoria, 2009.
Includes summaries in Afrikaans and English. Includes bibliographical references (leaves [74]-78). Mode of access: World Wide Web.
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Lo, Keng Wai. "Wideband active-balun variable-gain low-noise amplifier for mobile-TV applications." Thesis, University of Macau, 2010. http://umaclib3.umac.mo/record=b2148237.

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PATEL, PRERNA D. "DESIGN OF A PIXEL SCALE OPTICAL POWER METER SUITABLE FOR INCORPORATION IN A MULTI-TECHNOLOGY FPGA." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1066421274.

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Ehteshamuddin, Mohammed. "Design of a High Temperature GaN-Based Variable Gain Amplifier for Downhole Communications." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/74958.

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The decline of easily accessible reserves pushes the oil and gas industry to explore deeper wells, where the ambient temperature often exceeds 210 °C. The need for high temperature operation, combined with the need for real-time data logging has created a growing demand for robust, high temperature RF electronics. This thesis presents the design of an intermediate frequency (IF) variable gain amplifier (VGA) for downhole communications, which can operate up to an ambient temperature of 230 °C. The proposed VGA is designed using 0.25 μm GaN on SiC high electron mobility transistor (HEMT) technology. Measured results at 230 °C show that the VGA has a peak gain of 27dB at center frequency of 97.5 MHz, and a gain control range of 29.4 dB. At maximum gain, the input P1dB is -11.57 dBm at 230 °C (-3.63 dBm at 25 °C). Input return loss is below 19 dB, and output return loss is below 12 dB across the entire gain control range from 25 °C to 230 °C. The variation with temperature (25 °C to 230 °C) is 1 dB for maximum gain, and 4.7 dB for gain control range. The total power dissipation is 176 mW for maximum gain at 230 °C.
Master of Science
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Book chapters on the topic "Variable gain amplifiers"

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Chen, Sherry Xi, and Georg Seelig. "A DNA Neural Network Constructed from Molecular Variable Gain Amplifiers." In Lecture Notes in Computer Science, 110–21. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-66799-7_8.

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Verma, Vivek, and Chetan D. Parikh. "A Low-Power Wideband High Dynamic Range Single-Stage Variable Gain Amplifier." In Communications in Computer and Information Science, 19–25. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-42024-5_3.

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"Variable Gain Amplifier." In CMOS Millimeter-Wave Integrated Circuits for Next Generation Wireless Communication Systems, 121–50. WORLD SCIENTIFIC, 2019. http://dx.doi.org/10.1142/9789811202612_0004.

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Kumar Thangarasu, Bharatha, Kaixue Ma, and Kiat Seng Yeo. "Variable Gain Amplifier." In Low-Power Wireless Communication Circuits and Systems, 61–79. Jenny Stanford Publishing, 2018. http://dx.doi.org/10.1201/9781315156538-5.

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"An ultra-low and adjustable high-pass corner frequency variable gain amplifier using T-type pseudo-resistor." In Information Technology, 153–58. CRC Press, 2015. http://dx.doi.org/10.1201/b18776-29.

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Sovcik, Michal, Lukas Nagy, Viera Stopjakova, and Daniel Arbet. "Digital On-Chip Calibration of Analog Systems towards Enhanced Reliability." In Practical Applications in Reliability Engineering. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96609.

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This chapter deals with digital method of calibration for analog integrated circuits as a means of extending its lifetime and reliability, which consequently affects the reliability the analog electronic system as a whole. The proposed method can compensate for drift in circuit’s electrical parameters, which occurs either in a long term due to aging and electrical stress or it is rather more acute, being caused by process, voltage and temperature variations. The chapter reveals the implementation of ultra-low voltage on-chip system of digitally calibrated variable-gain amplifier (VGA), fabricated in CMOS 130 nm technology. It operates reliably under supply voltage of 600mV with 10% variation, in temperature range from −20°C to 85°C. Simulations suggest that the system will preserve its parameters for at least 10 years of operation. Experimental verification over 10 packaged integrated circuit (IC) samples shows the input offset voltage of VGA is suppressed in range of 13μV to 167μV. With calibration the VGA closely meets its nominally designed essential specifications as voltage gain or bandwidth. Digital calibration is comprehensively compared to its widely used alternative, Chopper stabilization through its implementation for the same VGA.
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Conference papers on the topic "Variable gain amplifiers"

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Diebold, S., D. Muller, D. Schwantuschke, S. Wagner, R. Quay, T. Zwick, and I. Kallfass. "AlGaN/GaN-based variable gain amplifiers for W-band operation." In 2013 IEEE/MTT-S International Microwave Symposium - MTT 2013. IEEE, 2013. http://dx.doi.org/10.1109/mwsym.2013.6697340.

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Zhao, Yibing, Bin Hou, and Shuyun Zhang. "Monolithically integrated high performance digital variable gain amplifiers." In 2012 IEEE Radio Frequency Integrated Circuits Symposium (RFIC). IEEE, 2012. http://dx.doi.org/10.1109/rfic.2012.6242254.

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Kong, Lingshan, Yong Chen, Haohong Yu, Quan Pan, Chirn Chye Boon, Pui-In Mak, and Rui P. Martins. "Wideband Variable-Gain Amplifiers Based on a Pseudo-Current-Steering Gain-Tuning Technique." In 2019 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS). IEEE, 2019. http://dx.doi.org/10.1109/apccas47518.2019.8953084.

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Muh-Dey Wei, Sheng-Fuh Chang, and Renato Negra. "A DC-invariant gain control technique for CMOS differential variable-gain low-noise amplifiers." In 2010 NORCHIP. IEEE, 2010. http://dx.doi.org/10.1109/norchip.2010.5669481.

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Pham, Duy-Dong, Kai Kang, and Fujiang Lin. "Current diversion technique for the design of broadband variable gain amplifiers." In 2010 IEEE International Conference on Communication Systems (ICCS). IEEE, 2010. http://dx.doi.org/10.1109/iccs.2010.5686108.

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Halvorsrod, T. "A dynamic range boosted, low-power method adding continuous variable gain to amplifiers." In 2005 NORCHIP. IEEE, 2005. http://dx.doi.org/10.1109/norchp.2005.1597036.

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Hartzell, Kenneth R. "Free electron laser amplifiers in the high gain Compton regime with variable wigglers." In AIP Conference Proceedings Volume 172. AIP, 1988. http://dx.doi.org/10.1063/1.37474.

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Spiridon, Silvian, Claudius Dan, and Mircea Bodea. "Determining the optimal number of gain stages of variable gain amplifiers used in multi-standard homodyne wireless receivers." In 2013 International Semiconductor Conference (CAS 2013). IEEE, 2013. http://dx.doi.org/10.1109/smicnd.2013.6688652.

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"Compact HEMT MMIC K-band variable gain amplifiers for satellite receiver and transmitter applications." In 15th International Communicatons Satellite Systems Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1994. http://dx.doi.org/10.2514/6.1994-949.

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Cabuk, A., A. V. T. Do, C. C. Boon, Kiat-Seng Yeo, and Manh Anh Do. "Digitally controllable variable-gain amplifiers in 0.18-μm CMOS technology for μ-power applications." In 2007 International Symposium on Integrated Circuits - ISIC 2007. IEEE, 2007. http://dx.doi.org/10.1109/isicir.2007.4441908.

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