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Ultra‐wideband Vivaldi antenna design for multisensor adaptive ground‐penetrating impulse radar
Author(s) -
Turk Ahmet Serdar
Publication year - 2006
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.21491
Subject(s) - vivaldi antenna , ground penetrating radar , wideband , radar , engineering , electronic engineering , detector , microwave , bandwidth (computing) , ultra wideband , impulse (physics) , acoustics , antenna (radio) , electrical engineering , radiation pattern , optics , telecommunications , physics , quantum mechanics
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