Wide-band UHF antenna of circular polarization
Wide-band and low-profile antennas of circular polarization are of great demand in many communication systems, such as RFID, UAV. The objective of this dissertation is to des ign a planar UHF antenna that exhibits wide bandwidth and circular polarization. In this dissertation, a novel ultra...
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| Format: | Theses and Dissertations |
| Language: | English |
| Published: |
2015
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| Subjects: | |
| Online Access: | http://hdl.handle.net/10356/64782 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | Wide-band and low-profile antennas of circular polarization are of great demand
in many communication systems, such as RFID, UAV. The objective of this dissertation
is to des ign a planar UHF antenna that exhibits wide bandwidth and circular
polarization. In this dissertation, a novel ultra wide band (3 00 MHz -3000 MHz)
antenna is designed in the first place to operate in the required frequency bands, which
exhibits low profile, wide bandwidth and circular polarization. The proposed antenna
that has a more compact transverse size than the conventional ones achieves the
advantages of compact size, light weight, easy integration, and wideband. Moreover,
simulation results show that the antenna in this dissertation obtains a very good antenna
perfo rmance with low voltage standing wave ratio (VSWR) and ax ial ratio (AR), so it is
suitable for wideband communication applications. An initial design will be proposed
and simulated in High Frequency Structure Simulator (HFSS). Simulation results of the
design show some crucial radiation performances that can meet the specific
requirements of the circularly polarized (C P) antenna used in the wireless systems,
especially in the UAV systems. |
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