Design and experimental evaluation of an electro-optical, sigma-delta modulator for wideband digital antennas.

Design and experimental evaluation of an electro-optical, sigma-delta modulator for wideband digital antennas.

Approved for public release; distribution is unlimited === Electro-optical sigma-delta analog-to-digital converters (ADCs) use a pulsed laser to oversample an input signal at two Mach-Zehnder interferometer modulators. A fiber lattice accumulator is embedded within a feedback loop around a single-bi...

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Main Author: Gillespie, William U.
Other Authors: Pace, Phillip E.
Language:en_US
Published: Monterey, California. Naval Postgraduate School 2012
Online Access:http://hdl.handle.net/10945/9246
http://handle.dtic.mil/100.2/ADA386636
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spelling ndltd-nps.edu-oai-calhoun.nps.edu-10945-92462015-05-06T03:58:04Z Design and experimental evaluation of an electro-optical, sigma-delta modulator for wideband digital antennas. Gillespie, William U. Pace, Phillip E. Powers, John P. Naval Postgraduate School (U.S.) Approved for public release; distribution is unlimited Electro-optical sigma-delta analog-to-digital converters (ADCs) use a pulsed laser to oversample an input signal at two Mach-Zehnder interferometer modulators. A fiber lattice accumulator is embedded within a feedback loop around a single-bit quantizer to spectrally shape the quantization noise to fall outside the signal band of interest. Applications of electro-optical sigma-delta ADCs include digitizing wideband radio frequency signals directly at an antenna (digital antenna). The design considerations, construction process and experimental evaluation of the electro-optical sigma-delta ADC are presented. The experimental results are compared with a computer model of the electro- optical sigma-delta sampling and digitization process. 2012-08-09T19:28:06Z 2012-08-09T19:28:06Z 2000 Thesis http://hdl.handle.net/10945/9246 http://handle.dtic.mil/100.2/ADA386636 en_US This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. As such, it is in the public domain, and under the provisions of Title 17, United States Code, Section 105, it may not be copyrighted. Monterey, California. Naval Postgraduate School
collection NDLTD
language en_US
sources NDLTD
description Approved for public release; distribution is unlimited === Electro-optical sigma-delta analog-to-digital converters (ADCs) use a pulsed laser to oversample an input signal at two Mach-Zehnder interferometer modulators. A fiber lattice accumulator is embedded within a feedback loop around a single-bit quantizer to spectrally shape the quantization noise to fall outside the signal band of interest. Applications of electro-optical sigma-delta ADCs include digitizing wideband radio frequency signals directly at an antenna (digital antenna). The design considerations, construction process and experimental evaluation of the electro-optical sigma-delta ADC are presented. The experimental results are compared with a computer model of the electro- optical sigma-delta sampling and digitization process.
author2 Pace, Phillip E.
author_facet Pace, Phillip E.
Gillespie, William U.
author Gillespie, William U.
spellingShingle Gillespie, William U.
Design and experimental evaluation of an electro-optical, sigma-delta modulator for wideband digital antennas.
author_sort Gillespie, William U.
title Design and experimental evaluation of an electro-optical, sigma-delta modulator for wideband digital antennas.
title_short Design and experimental evaluation of an electro-optical, sigma-delta modulator for wideband digital antennas.
title_full Design and experimental evaluation of an electro-optical, sigma-delta modulator for wideband digital antennas.
title_fullStr Design and experimental evaluation of an electro-optical, sigma-delta modulator for wideband digital antennas.
title_full_unstemmed Design and experimental evaluation of an electro-optical, sigma-delta modulator for wideband digital antennas.
title_sort design and experimental evaluation of an electro-optical, sigma-delta modulator for wideband digital antennas.
publisher Monterey, California. Naval Postgraduate School
publishDate 2012
url http://hdl.handle.net/10945/9246
http://handle.dtic.mil/100.2/ADA386636
work_keys_str_mv AT gillespiewilliamu designandexperimentalevaluationofanelectroopticalsigmadeltamodulatorforwidebanddigitalantennas
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