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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Sarabandi, K. DaHan Liao |
| Copyright Year | 2007 |
| Description | Author affiliation: Radiat. Lab., Michigan Univ., Ann Arbor, MI (Sarabandi, K.; DaHan Liao) |
| Abstract | An investigation into the design of optimal low-profile, small antennas for unattended ground sensor (UGS) networks operating at VHF or higher frequencies is featured in this study. Because UGS transceivers are intended for operation near the ground, ground proximity effects become extremely important for considerations related to antenna efficiency, input matching, radiation pattern, and the overall path loss between the transmitter and receiver nodes. While vertical wire antennas are shown to be less susceptible to path loss, a low-profile alternative is required in fabricating cheap, monolithic on-chip, miniaturized systems. In seeking an optimal design, the performances of different transceiver systems utilizing different types of antenna structures including the dipole, loop, ordinary circular slot, and cavity-backed circular slot are analyzed using a full-wave hybrid approach consisting of the moment method in conjunction with an asymptotic field propagation model. The figure of merit for comparison among the various configurations is identified as the efficiency factor calculated from the ratio of the radiated power at the transmitting terminal to the received power at the receiving terminal |
| Starting Page | 245 |
| Ending Page | 248 |
| File Size | 4576331 |
| Page Count | 4 |
| File Format | |
| ISBN | 1424404444 |
| DOI | 10.1109/RWS.2007.351814 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2007-01-09 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Performance analysis Transceivers Dipole antennas Frequency Proximity effect Receiving antennas Transmitting antennas Pattern matching Impedance matching Antenna radiation patterns unattended ground sensor networks Antenna performance analysis ground proximity effects low-profile antennas moment method near-earth wave propagation |
| Content Type | Text |
| Resource Type | Article |
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