| Reconfigurable Printed Antenna for GPS Applications |
SEP 2001 |
74 pages |
| Authors:
R. G. Rojas; K. W. Lee; N. Surittikul; OHIO STATE UNIV COLUMBUS ELECTROSCIENCE LAB
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 | This final report discusses three issues related to the design of reconfigurable printed antenna for GPS applications. The first one deals with a brief study of four key parameters, namely, ring, ground plane and substrate dimensions as well as substrate thickness. The dependence of the radiation pattern on the dimensions of these parameters is discussed. Surface currents induced on the ring are also calculated to understand the behavior of the ... |
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| Reconfigurable GPS Antenna |
AUG 2000 |
56 pages |
| Authors:
K. W. Lee; R. G. Rojas; OHIO STATE UNIV COLUMBUS ELECTROSCIENCE LAB
|
| Various schemes for the design of recontigurable printed antenna eiements are presented for GPS and other applications. The antenna elements can be linearly or circularly polarized. The physical phenomenon behind these schemes is based on the modification of the EM propagation characteristics of a dielectric substrate by using parasitic metallic strips connected by switches. The switches can be implemented with diodes, transistors or RF MEMS. ... |
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| Study of a Novel Adaptive Printed Antenna Element for GPS Applications |
MAR 1999 |
94 pages |
| Authors:
R. G. Rojas; K. W. Lee; OHIO STATE UNIV COLUMBUS ELECTROSCIENCE LAB
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| This report discusses the development of a novel adaptive printed antenna element for GPS applications. This antenna element consists of a microstrip patch antenna and several diode-loaded parasitic metallic strips on top of the dielectric substrate. It is shown through computer simulations that the beamwith of the antenna can be modified by turning the diodes on or off. This implies that the radiated pattern level can be modified along the ... |
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