A steerable leaky-wave antenna using a tunable impedance ground plane

A steerable leaky-wave antenna using a tunable impedance ground plane

A steerable leaky-wave antenna is built using a mechanically tunable impedance surface. A horizontally polarized antenna couples energy into leaky transverse electric waves on a tunable textured ground plane. By tuning the resonance frequency of the surface, the band structure is shifted in frequenc...

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Veröffentlicht in:IEEE antennas and wireless propagation letters 2002, Vol.1, p.179-182
Hauptverfasser: Sievenpiper, D., Schaffner, J., Lee, J.J., Livingston, S.
Format: Artikel
Sprache:eng
Schlagworte:
Antennas
Band structure of solids
Beams (radiation)
Corrugated surfaces
Elevation angle
Ground plane
Impedance
Leaky wave antennas
Magnetic resonance
Polarization
Resonant frequency
Surface impedance
Surface texture
Surface waves
Tellurium
Tuning
Wavelengths
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Beschreibung
Zusammenfassung:A steerable leaky-wave antenna is built using a mechanically tunable impedance surface. A horizontally polarized antenna couples energy into leaky transverse electric waves on a tunable textured ground plane. By tuning the resonance frequency of the surface, the band structure is shifted in frequency, which changes the tangential wave vector of the leaky waves for a fixed frequency. This steers the elevation angle of the resulting radiated beam. This steerable leaky-wave antenna can scan over a range of 45/spl deg/ using a mechanical movement of about 1/500 wavelength.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2002.807788