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 20 of 34 for “"Focal Plane Arrays"”.
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Area-constrained frequency estimation for focal plane arrays
… frequency and amplitude of signals generated by focal plane array (FPA) on a per-pixel basis, i.e., pixel-matched processing. Addressing this problem requires the design of signal processing algorithms and circuit architectures subject to stringent area constraints imposed by the pixel pitch, …
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Quantum well intersubband photodetectors in focal plane arrays
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1996.
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Advanced numerical modeling and characterization of infrared focal plane arrays
… of choice for high performance infrared (IR) focal plane arrays (FPAs). Unique among semiconductor materials, HgCdTe features a widely tunable, direct bandgap from the ultraviolet to very long wavelength IR, lattice matched substrates, excellent quality epitaxial layers, and long minority …
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Influences on post-correction nonuniformity of infrared focal plane arrays
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
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Study of scene-based nonuniformity compensation in infrared focal plane arrays
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.
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Investigation of InAs/GaSb superlattice based nBn detectors and focal plane arrays
… LWIR spectral regions; 2) development of a MWIR focal plane array (FPA) based on the InAs/GaSb SLS detector with the nBn design; 3) development of a new passivation method for mid wave infrared (MWIR) and long wave infrared (LWIR) p-i-n SLS detectors. As a result of this work, the following …
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Antennas for Terahertz Applications: Focal Plane Arrays and On-chip Non-contact Measurement Probes
… THz sensing devices. For example, large-format focal plane arrays (FPAs) have been the Achilles’ heel of THz imaging systems. Typically, optical components (lenses, mirrors) are employed in order to improve the optical performance of FPAs, however, antenna sensors suffer from degraded …
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Low power highly linear CMOS output buffer for low temperature infrared focal plane arrays
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1992.
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Iii-V Multiple Quantum Well Long-Wavelength Infrared Detectors
… low-cost, large long wavelength infrared focal-plane arrays.
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Analog multiply and accumulate FPA readout circuit with digital multiply and sign maintenance
… the data coming from modern high resolution focal plane arrays leads to the necessity for fast and efficient read out and data processing. A system that performs block recognition and image classification with efficiency and low latency is presented. The system is comprised of an analog …
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Design of a Readout Integrated Circuit (ROIC) for Infrared Imaging Applications
… systems depends on 1) the sensitivity of the Focal Plane Arrays (FPA) as the transducer of the electromagnetic wave and 2) the Readout Integrated Circuit (ROIC) that provides the pixel data to the processing unit. In this thesis, we describe specific ROIC designed for a dual-band IR imaging …
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Characterization of spectral response of a quantum dots-in-a-well infrared focal plane array
… quantum dots-in-a-well (DWELL) infrared focal plane array (FPA) was undertaken and reported here. The hypothesis of the study is that the FPA will exhibit bias-tunable spectral response. Broadband and two-color performance measures of the DWELL FPA are discussed and presented. The DWELL …
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MULTICOLOR INFRARED DETECTION USING STEP QUANTUM WELLS
… fabrication of large scale quantum well infrared focal plane arrays (FPA). In the meantime, various kinds of quantum well structures with novel properties are also explored. Multi-color detection, which may enhance the discrimination ability of infrared detectors, is one of the features that …
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Four-Dimensional Coherence Sensing
… computational capacity and large electronic focal plane arrays have made new combinations of optical sensing and digital processing possible. Using the framework of optical spatial coherence theory, this thesis proposes and investigates new combinations of optics and algorithms with …
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System analysis and design of a low-cost micromechanical seeker system
… systems (MEMS) IMU's and optical focal plane arrays (FPA). The resulting decreasing device size and production costs coupled with higher unit performance have created opportunities for implementing seeker-enabled systems on platforms previously deemed impractical. As a result, the …
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Aluminum nitride microelectromechanical infrared detectors with integrated metamaterial absorbers
… to a DC voltage for optimum integration into focal plane arrays (FPAs). A sensitivity metric called the temperature coefficient of reflection coefficient (TCΓ) is defined which is analogous to the temperature coefficient of resistance (TCR) described for conventional uncooled bolometer IR …
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The effects of electronic microscanning on infrared image aliasing and spaial resolution
… imagers to acquire image data. Typical staring focal plane arrays contain a two-dimensional array of photodetectors. Each photodetector generates an electrical current or charge proportional to the number of photons striking its immediate vicinity. However, due to the discrete finite nature of …
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CMOS Terahertz Sensors and Circuits for Imaging Applications
… as a solution. In an attempt to improve the THz focal plane arrays state of the art, the use of an imager architecture is proposed, where each sensing element of an array can be addressed individually. This architecture provides better system performance in terms of sensitivity, resolution or …
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ADVANCED CMOS SINGLE-PHOTON IMAGER ARCHITECTURES FOR QUANTUM AND SCIENTIFIC IMAGING APPLICATIONS
… sensitivity, their integration into large-scale arrays has traditionally been hindered by massive data bandwidth requirements and limited in-pixel functionality. To address these bottlenecks, this research introduces three primary innovations in three different fields targeting Quantum Ghost …
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InAs/Ga(In)Sb superlattice based infrared detectors using nBn design
… and to increase the operating temperature of Focal Plane Arrays. This thesis covers three topics: Optical and electrical characteristics of single pixel devices in both the MWIR and LWIR, the reduction of surface leakage currents by using a shallow isolation etch for definition of the top …
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