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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Sugiura, S. Suzuki, N. Iizuka, H. |
| Copyright Year | 2002 |
| Abstract | We herein investigate the effect of the number of elements of a previously studied reactively loaded ring antenna array with respect to electronically variable beamwidth performance. The antenna has a unique ability to increase the effective antenna length by adding parasitic ring elements, which contributes to higher performance with respect to beamwidth variation. Monte Carlo (MC) simulations clarify that variable range of beamwidth can be improved effectively by increasing the number of ring elements M to 5. It is herein demonstrated for the case of M = 5 that the beamwidth toward the broadside direction can be controlled from 40deg to 145deg in the E plane, while maintaining the voltage standing-wave ratio (VSWR) to less than 3.0, where the antenna size is 0.32lambda times 1.32lambda. In addition, it is also confirmed that the number of estimated directions-of-arrival (DOAs) based on the reactance-domain multiple signal classification (MUSIC) algorithm can be also increased by increasing the number of ring elements. |
| Sponsorship | IEEE Antennas and Propagation Society |
| Starting Page | 669 |
| Ending Page | 672 |
| Page Count | 4 |
| File Size | 184650 |
| File Format | |
| ISSN | 15361225 |
| Volume Number | 7 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2008-01-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Loaded antennas Antenna arrays Directive antennas Direction of arrival estimation Multiple signal classification Monte Carlo methods Phased arrays Research and development Laboratories Feeds variable beamwidth Active antennas antenna array direction-of-arrival (DOA) estimation parasitic elements reactively steered antennas road vehicles varactors direction-of-arrival estimation |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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