Optical-controlled true-time delay devices and their application in phased array antenna system
| dc.contributor.advisor | Chen, Ray T. | en |
| dc.creator | Shi, Zhong | en |
| dc.date.accessioned | 2008-08-28T21:59:35Z | en |
| dc.date.available | 2008-08-28T21:59:35Z | en |
| dc.date.issued | 2004 | en |
| dc.description.abstract | Military and civilian wireless communication systems require compact phased array antenna systems with high performance. Conventional phase-shifter based techniques suffer from beam squint effect which causes undesirable changing of beam steering angle when the microwave frequency changes in phased array antenna system. Optical true-time delay techniques open the possibility of ultra-wide bandwidth antenna systems, while at the same time meeting the stringent weight and size requirements. Continuously tunable true-time delay techniques can provide continuous beam-steering ability without mechanical movement for the phased array antenna systems. With advanced optoelectronic techniques, fast wavelength tuning speed (~ns) is possible. This may provide viable solutions to the high-speed phased array antenna systems. This dissertation describes holographic-gratings based optical continuous-tunable true-time delay devices and their application in a X-band phased array antenna system. The design, development and measurements of the true-time delay devices and the X-band phased array antenna system are explained in this dissertation. | |
| dc.description.department | Electrical and Computer Engineering | en |
| dc.format.medium | electronic | en |
| dc.identifier | b59345494 | en |
| dc.identifier.oclc | 58397203 | en |
| dc.identifier.uri | http://hdl.handle.net/2152/1407 | en |
| dc.language.iso | eng | en |
| dc.rights | Copyright is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works. | en |
| dc.subject.lcsh | Phased array antennas | en |
| dc.subject.lcsh | Time delay systems | en |
| dc.title | Optical-controlled true-time delay devices and their application in phased array antenna system | en |
| dc.type.genre | Thesis | en |
| thesis.degree.department | Electrical and Computer Engineering | en |
| thesis.degree.discipline | Electrical and Computer Engineering | en |
| thesis.degree.grantor | The University of Texas at Austin | en |
| thesis.degree.level | Doctoral | en |
| thesis.degree.name | Doctor of Philosophy | en |