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A wide-band dual-polarized VHF microstrip antenna for global sensing of sea ice thicknessA VHF microstrip patch antenna was developed to achieve a bandwidth of 45 MHz (30%) from 127 MHz to 172 MHz with dual-linear-polarization capability. This microstrip antenna used foam substrates and dual stacked patches with capacitive probe feeds to achieve wide bandwidth. Four such capacitive feeds were used to achieve dual polarizations with less than -20 dB of cross-polarization level. Twenty-four shorting pins were used on the lower patch to achieve acceptable isolation between the four feed probes. This antenna has a measured gain of 8.5 dB at 137 MHz and 10 dB at 162 MHz. By using the Method of Moments technique, multipath scattering patterns were calculated when the antenna is mounted on the outside of a Twin Otter aircraft.
Document ID
20060044365
Acquisition Source
Jet Propulsion Laboratory
Document Type
Conference Paper
External Source(s)
Authors
Huang, John
Hussein, Ziad
Petros, Argy
Date Acquired
August 23, 2013
Publication Date
July 5, 2005
Subject Category
Communications And Radar
Meeting Information
Meeting: IEEE Antennas and Propagation
Location: Washington, DC
Country: United States
Start Date: July 5, 2005
End Date: July 9, 2005
Distribution Limits
Public
Copyright
Other
Keywords
VHF
microstrip antennas
wide bands
dual polarizations

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