Browsing Electrical and Computer Engineering, Department of by Author "Saavedra, Carlos E."
Now showing items 1-16 of 16
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Broadband Low-Noise CMOS Mixers For Wireless Communications
Jiang, Fan (2013-10-03)In this thesis, three broadband low-noise mixing circuits which use CMOS 130 nm technology are presented. As one of the first few stages in a receiving front-end, stringent requirements are posted on mixer performance. The ... -
A Decade-Bandwidth Low-Noise Mixer RFIC with a Distortion-Canceling Output Amplifier
El-Gabaly, Ahmed M.; Li, Hao; Saavedra, Carlos E. (2016-08-08)This paper presents a 1-10 GHz low-noise downconvert mixer RFIC suitable for wideband receivers. A switched transconductor mixing core is adopted to reduce noise at high frequencies. By adding a series inductor to the RF ... -
Design of a Miniaturized SoP Integrated GNSS RF Front-End Module
Wahib, Mina (2016-06-28)Navigation devices used to be bulky and expensive and were not widely commercialized for personal use. Nowadays, all useful electronic devices are turning into being handheld so that they can be conveniently used anytime ... -
Design of Low-Voltage and Low-Distortion CMOS RF Integrated Circuits Using Volterra Analysis
He, Shan (2011-09-22)Analog circuits that operate with low voltage supply headroom generally suffer from poor linearity performance, poor noise performance, etc. However, with the aggressive scaling of the supply voltage in Complementary Metal ... -
Digital Control in Microwave Receiver Front-End Components
Mondal, Shrijeet (2014-05-05)In this thesis digital control techniques for two receiver front-end components i.e. the downconverter mixer and the modulator are presented. With decrease in size of CMOS-based geometries, decrease in performance and yield ... -
Digitally Assisted Radio-Frequency Integrated Circuits
Stewart, David (2013-08-01)In this thesis, three radio frequency integrated circuits (RFICs) were digitally assisted for varying signal power, frequency or both. Performance paramters were 'optimized' in the sense of obtaining the best performance ... -
Low-Noise Mixing Circuits in CMOS Microwave Integrated Circuits
Ho, Stanley (2009-08-25)In this thesis, three low-noise active mixing circuits are presented in CMOS technology. Mixers can be found at the front-end of almost every communication systems. However, despite many advantages the active mixers have, ... -
Method to Improve the Linearity of Active Commutating Mixers Using Dynamic Current Injection
Mohsenpour, Mohammad-Mahdi; Saavedra, Carlos E. (2016-08-08)A double balanced (DBM) CMOS mixer providing high linearity is presented in this paper. A cross-coupled pair used in the IF stage of the mixer to dynamically inject current into the to mixer provide a high linearity. The ... -
Operational Transconductance Amplifiers For Gigahertz Applications
Zheng, You (2008-09-19)A novel CMOS operational transconductance amplifier (OTA) is proposed and demonstrated in this thesis. Due to its feedforward-regulated cascode topology, it breaks the previous OTA frequency limit of several hundred MHz ... -
Phase Generation and Manipulation in CMOS Integrated Circuits
Yong, Gideon S. K. (2008-04-01)In this thesis three circuits are presented that demonstrate the creation and manipulation of various phases over a large bandwidth. Many systems demand the interoperability of various circuit blocks over a large frequency ... -
Pulsed RF Circuits for Ultra Wideband Communications and Radar Applications
El-Gabaly, Ahmed (2011-08-23)This thesis explores the design of fast-settling pulse generators and pulsed low noise amplifiers (LNAs) for Ultra-Wideband (UWB) applications. These components are critical in pulsed UWB transceivers, and a high energy ... -
Radio frequency direct-digital QPSK modulators in CMOS technology
El-Gabaly, Ahmed M. (2007-09-28)In this thesis, novel direct-digital Quadrature Phase Shift Keying (QPSK) modulators are proposed in low-cost Complimentary Metal Oxide Semiconductor (CMOS) technology for radio frequency (RF) wireless applications. ... -
Reconfigurable Circuits for Communication Applications and Environment-Aware Receivers
Mohsenpour, Mohammad MahdiThis thesis explores the new applications which benefi t from the exploitation of the digital circuits in the design of RF circuits. Two main applications presented here are the recon figurable circuits design, essential ... -
Reconfigurable CMOS Mixers for Radio-Frequency Applications
Wang, Min (2010-06-21)This thesis focuses on the design of radio-frequency (RF) mixers, including a broadband downconverter mixer, an upconverter mixer and a downconverter mixer with high linearity. The basic mixer topology used in this thesis ... -
Subharmonic Mixers in CMOS Microwave Integrated Circuits
Jackson, Bradley (2009-03-25)This thesis explores the design and applications of subharmonic mixers in CMOS microwave integrated circuits. First, a 2x down-converting subharmonic mixer is demonstrated with a measured conversion gain of 8 dB using a ... -
Variable 360° Vector-Sum Phase Shifter With Coarse and Fine Vector Scaling
Mohsenpour, Mohammad-Mahdi; Saavedra, Carlos E. (2016-08-08)A CMOS vector-sum phase shifter covering the full 360° range is presented in this paper. Broadband operational transconductance amplifiers with variable transconductance provide coarse scaling of the quadrature vector ...