Phase shift bandwidth and scan range in microstrip arrays by the element frequency tuning
dc.contributor.author | Shafai, L | |
dc.contributor.author | Sharma, SK | |
dc.contributor.author | Shafai, L | |
dc.contributor.author | Daneshmand, M | |
dc.contributor.author | Mousavi, P | |
dc.date.accessioned | 2007-10-03T13:01:31Z | |
dc.date.available | 2007-10-03T13:01:31Z | |
dc.date.issued | 2006-05-31T13:01:31Z | |
dc.description.abstract | In this paper, the far-field phase shift properties of microstrip patch antennas are investigated. It is shown that, similar to reflectarrays, the resonant nature of microstrip patches can be used to change the phase of the radiated field. This phase change can be caused by the dimensional change of the microstrip patch, or by a reactive loading of its cavity such as an aperture on its ground plane. However, the available phase shift is limited by the antenna impedance bandwidth. The problem is initially investigated for conventional patch antennas, determining the available phase shift range. It is then studied for a wideband E-slot microstrip antenna, showing a considerably larger phase shift range. Then, a micro-electro-mechanical (MEM) based ground plane membrane, activated by an electrode from below, is proposed to adaptively generate and control the required phase shifts. It provides a low loss, continuously variable phase shifter that can be used at high frequencies for beam scanning in small arrays. | en |
dc.format.extent | 959928 bytes | |
dc.format.mimetype | application/pdf | |
dc.identifier.citation | 0018-926X; IEEE TRANS ANTENNAS PROPAGAT, MAY 2006, vol. 54, no. 5, p.1467 to 1473. | en |
dc.identifier.doi | http://dx.doi.org/10.1109/TAP.2006.874313 | |
dc.identifier.uri | http://hdl.handle.net/1993/2856 | |
dc.language.iso | eng | en_US |
dc.rights | ©2006 IEEE. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Manitoba's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it. | en |
dc.rights | restricted access | en_US |
dc.status | Peer reviewed | en |
dc.subject | far-field phase shift | en |
dc.subject | frequency tuning | en |
dc.subject | microstrip antenna | en |
dc.subject | microstrip array | en |
dc.subject | phased array | en |
dc.subject | ANTENNAS | en |
dc.title | Phase shift bandwidth and scan range in microstrip arrays by the element frequency tuning | en |