Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"Transimpedance amplifier"”.
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Transimpedance Amplifier (TIA) Design for 400 Gb/s Optical Fiber Communications
… is proposed. As part of the receiver, a transimpedance amplifier for 100 Gb/s optical communication is designed, analyzed and simulated. Simulation results demonstrate the excellent feasibility of proposed architecture. Bipolar technology based on III-V materials (e.g. - GaAs, InP based …
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A MEMS-based, high-resolution Electric-Field meter
… front-end component of the sense block, a transimpedance amplifier, is implemented with a low-noise operational amplifier for optimum sensing resolution.
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PLL-based active optical clock distribution
… clocks across large chips. However, traditional transimpedance amplifier approaches to optical-electrical conversion introduce so much timing uncertainty that the accuracy gained through optical global distribution is lost at the global-to-local clock domain interface. This thesis analyzes the …
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CMOS Receiver Design for Optical Communications over the Data-Rate of 20 Gb/s
… dissertation. A new input-stage topology for a transimpedance amplifier (TIA) is designed to achieve 50% higher data-rate is presented, and a new architecture for clock recovery is proposed for 50% higher clock rate. The TIA is based on a gm-boosted common-gate amplifier. The input-resistance is …
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A Column-Row-Parallel ASIC architecture for 3D wearable / portable medical ultrasonic imaging
… dissipation. The receiver is implemented with a transimpedance amplifier topology and achieves a lowest noise efficiency factor in the literature (2.1 compared to a previously reported lowest of 3.6, in unit of mPa - [square root sign]mW/Hz). A source follower stage is specially designed to …
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Design of 10 Gb/s burst-mode receivers for high-split extended reach PONs
… The bandwidth is also limited and power hungry amplifiers are needed to bridge the distance to and from the user. The future of broadband access lies in optical fiber networks. The optical fiber has a virtually unlimited bandwidth and the lower attenuation leads to less switches and amplifiers …
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Receivers for energy efficient optical interconnects
… using a combination of a low bandwidth transimpedance amplifier (TIA) and a 4-tap decision feedback equalizer (DFE) to overcome the noise-bandwidth trade-off. Fabricated in a 65nm CMOS technology and heterogeneously integrated with a photonic IC, the proposed optical receiver achieves …
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Spatio-temporal circuits for imaging sensors
… are achieved by modifying a capacitive transimpedance amplifier (CTIA) CMOS ROIC architecture. The unit cell electronic circuit was designed using 15 transistors and four capacitors and consists of the CTIA integrator—a two-stage, seven-transistor operational amplifier—one analog memory, …
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Heterogeneously Integrated Impedance Based Biosensors
… CMOS platform only. The noise analysis of CMOS transimpedance amplifiers was performed, and the impact of technology scaling on low-noise transimpedance amplifiers was studied using the Enz-Krummenacher-Vittoz (EKV) model. It was found that the noise performance improves slowly with device …
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Detection and interpretation of fluorescence signals generated by excitable cells and tissues
<p>Part 1: High-Sensitivity Amplifiers for Detecting Fluorescence<br />Monitoring electrical activity and Ca<em>i</em> 2+ transients in biological tissues and individual cells increasingly utilizes optical sensors based on voltage-dependent and Ca<em>i</em> 2+-dependent fluorescent dyes. However, …
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Design and Qualification of a Coded Aperture Cycloidal Mass Spectrometer to Detect Perfluorocarbon Tracer Molecules for Environmental Applications
… during miniaturization. Finally, a capacitive transimpedance amplifier (CTIA) array ion detector offers sensitive, simultaneous ion detection across a wide mass range.</p><p>A detailed understanding of the detection process for this instrument was obtained through extensive simulations and …
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A High-Resolution Time-of-Flight Spectrometer for Fission Fragments and Ion Beams
… problem was to build a special fast, wide-band transimpedance amplifier. Using its circuit mounted close to the detectors, a significant reduction of the signal ringing was observed while maintaining the rise time of the detector signal. In order to process the multichannel-plate de- tector …
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Design techniques for high-speed wireline receivers
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-12-01
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Interface circuits for readout and control of a micro-hemispherical resonating gyroscope
Gyroscopes are inertial sensors that measure the rate or angle of rotation. One of the most promising technologies for reaching a high-performance MEMS gyroscope has been development of the micro-hemispherical shell resonator. (μHSR) This thesis presents the electronic control and read-out …