Ultra-wideband Vivaldi antenna design for multisensor adaptive ground-penetrating impulse radar

This paper describes a partially dielectric‐loaded Vivaldi antenna (PDVA) structure that maintains ultra‐wideband antenna characteristics over a bandwidth ratio greater than 25:1 so as to improve the impulse radiation characteristics for multisensor adaptive ground‐penetrating Radar (GPR) operations...

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Bibliographic Details
Published in:Microwave and optical technology letters 2006-05, Vol.48 (5), p.834-839
Main Author: Turk, Ahmet Serdar
Format: Article
Language:English
Subjects:
ground-penetrating radar
impulse radiation
TEM horn
ultra-wideband antennas
Vivaldi antenna
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Summary:This paper describes a partially dielectric‐loaded Vivaldi antenna (PDVA) structure that maintains ultra‐wideband antenna characteristics over a bandwidth ratio greater than 25:1 so as to improve the impulse radiation characteristics for multisensor adaptive ground‐penetrating Radar (GPR) operations. The PDVA is introduced for metal‐detector‐combined GPR head designs in order to avoid performance degradations based on the sensor interferences. It is shown that high gain, low input reflection, and signal‐ringing levels over the wide operational bands are attainable for a PDVA with proper dielectric and absorber loadings. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 834–839, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21491
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.21491