| ARTICLE |
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| Year : 2011 | Volume
: 57
| Issue : 5 | Page : 452-460 |
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Frequency and Time Domain Characterization of a Novel Hexagonal-shaped Microstrip Antenna for Ultra Wideband Applications
Mithilesh Kumar, Ananjan Basu, Shiban K Koul
Centre for Applied Research in Electronics (CARE), Indian Institute of Technology, Delhi, Hauzkhas, New Delhi, India
Correspondence Address:
Mithilesh Kumar
Centre for Applied Research in Electronics (CARE), Indian Institute of Technology, Delhi, Hauzkhas, New Delhi
India
 DOI: 10.4103/0377-2063.90167
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This paper presents frequency- and time-domain characterization of a new hexagonal-shaped monopole antenna with small slots for ultra-wideband (UWB) applications. The antenna was simulated using commercial software tools (CST) microwave studio and Agilent ADS. Neltec make a soft substrate having a dielectric constant of 2.2 and a board thickness of 0.254 mm (10 mil) was used to fabricate the proposed antenna. Frequency-domain characterization using an automatic network analyzer showed return loss less than -10 dB over the entire UWB frequency band. To study the effect of various parameters on the antenna performance, the detailed parametric study was carried out. The radiation patterns and group delay characteristics were measured in an anechoic chamber. Using an Agilent DSO9000A oscilloscope, time-domain characterization of the antenna was carried out. The simulated and measured results in the time domain showed good agreement. It was observed that the proposed antenna shows reasonably good frequency characteristics and time-domain pulse distortion is small indicating usefulness of the antenna for UWB communication applications. |
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