Time-Modulated Antenna Arrays for Circularly Polarized Shaped Beam Patterns

This letter presents new designs of time-modulated antenna arrays for circularly polarized shaped beams. Disk patches are used at the X-band as the elements distributed in nonuniform concentric square and circular apertures. The arrays are designed by optimizing the time-switched sequence of the ele...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2017, Vol.16, p.1537-1540
Main Authors: Reyna, Alberto, Balderas, Luz I., Panduro, Marco A.
Format: Article
Language:English
Subjects:
4-D antenna array
Amplitude modulation
Amplitudes
Antenna arrays
Antennas
Apertures
Beams (radiation)
Circular polarization
Design
Design optimization
Mutual coupling
Optimization
Particle swarm optimization
particle swarm optimization (PSO)
Patch antennas
Patches (structures)
shaped beams
Superhigh frequencies
Switches
Three-dimensional displays
time-modulated array
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Description
Summary:This letter presents new designs of time-modulated antenna arrays for circularly polarized shaped beams. Disk patches are used at the X-band as the elements distributed in nonuniform concentric square and circular apertures. The arrays are designed by optimizing the time-switched sequence of the elements while maintaining uniform amplitudes. The particle swarm optimization is utilized as the synthesis strategy. Two design examples for circularly polarized flat-top and isoflux patterns are presented.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2017.2647900