Wideband cavity backed spiral antenna for stepped frequency ground penetrating radar

Wideband cavity backed spiral antenna for stepped frequency ground penetrating radar

A 1.7 turn cavity backed coplanar waveguide to coplanar strip-fed logarithmic uniplanar spiral antenna is presented and compared to a 1.5 turn spiral antenna. The 1.7 turn spiral antenna has a wide beamwidth, are circular polarised and has a bandwidth with a return loss better than 6 dB in the frequ...

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Bibliographische Detailangaben
Hauptverfasser: Thaysen, J., Jakobsen, K.B., Lenler-Eriksen, H.-R.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Bandwidth
Broadband antennas
Circular polarised antenna
Directive antennas
Frequency
Ground penetrating radar
Ground Penetrating Radar (GPR)
Impedance matching
Polarization
Radar antennas
Radar detection
Spirals
Wideband balun
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Beschreibung
Zusammenfassung:A 1.7 turn cavity backed coplanar waveguide to coplanar strip-fed logarithmic uniplanar spiral antenna is presented and compared to a 1.5 turn spiral antenna. The 1.7 turn spiral antenna has a wide beamwidth, are circular polarised and has a bandwidth with a return loss better than 6 dB in the frequency band from 0.25 GHz to 4.5 GHz (18:1). The antenna is useful for ground penetrating radar (GPR)
ISSN:1522-3965
1947-1491
DOI:10.1109/APS.2005.1551581