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7333635 
Meetings & Symposia 
Planar half-disk antenna structures for ultra-wideband communications 
Yang, T; Davis, WA 
2004 
Monterey, CA 
IEEE Antennas and Propagation Society Symposium 2004 Digest held in Conjunction with: USNC/URSI National Radio Science Meeting 
3 
2508-2511 
English 
The application of planar versions of the half-disc antenna with different feed structures for Ultra-Wideband Communications (UWB), was discussed. These versions were compared with respect to radiated pulse width, pulse amplitude, pulse linearity, and omni-directional radiation characteristics. A coplanar waveguide (CPW) feed and the microstrip feed structures were considered as alternatives to coax for a planar version of the half-disk antenna. It was found that the overall performance for UWB communications are similar, but the CPW-fed structure is more constrained in choice of substrate amd mode-suppression than the microstrip-fed structures. 
Antenna structures; Pulse amplitude; Pulse width; Ultra-wideband (UWB) communications; Approximation theory; Dipole antennas; Electromagnetic waves; Permittivity; Polarization; Thickness measurement; Transmission electron microscopy; Waveguides; Wireless telecommunication systems; Microstrip antennas