Low-Dispersion Spiral Antennas

Low-Dispersion Spiral Antennas

A two-arm power spiral antenna with inherently low dispersion is proposed. Analytical, computational, and experimental steps are taken to demonstrate its superior time domain performance. When compared with conventional Archimedean and equiangular spirals, up to 40% improved fidelity factor and puls...

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Veröffentlicht in:IEEE transactions on antennas and propagation 2012-12, Vol.60 (12), p.5522-5530
Hauptverfasser: Elmansouri, M. A., Filipovic, D. S.
Format: Artikel
Sprache:eng
Schlagworte:
Antenna measurements
Antennas
Applied sciences
Delay
Dispersion
Dispersions
Exact sciences and technology
Fidelity factor
Frequency domain analysis
Frequency domains
group delay
Hardware
Noise levels
power spirals
pulse distortion
Radiocommunications
Spiral antennas
Spirals
Studies
Telecommunications
Telecommunications and information theory
Time domain
Time domain analysis
transfer function
Wow
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Beschreibung
Zusammenfassung:A two-arm power spiral antenna with inherently low dispersion is proposed. Analytical, computational, and experimental steps are taken to demonstrate its superior time domain performance. When compared with conventional Archimedean and equiangular spirals, up to 40% improved fidelity factor and pulse compression are achieved. It is, however also shown that the power spiral's mid and high band axial ratio is compromised. To enhance the power spiral's frequency domain characteristics, a combined Archimedean/power spiral is developed. VSWR below 2:1, clean patterns with wobble on the wave (WoW) and axial ratio
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2012.2211321