Novel Four Cross Slot Radiator With Tuning Vias for Circularly Polarized SIW Linear Array

A substrate integrated waveguide (SIW) linear array is presented with a new circularly polarized (CP) element. The single radiator consists of four cross tilted slots. In addition, a pair of tuning metallic vias is included to improve the reflection of longest slots. A 16-element antenna prototype w...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2014-04, Vol.62 (4), p.2271-2275
Main Authors: Sanchez-Olivares, Pablo, Masa-Campos, Jose Luis
Format: Article
Language:English
Subjects:
Antenna
Antenna measurements
Antennas
Applied sciences
Arrays
Beams (radiation)
circular polarization (CP)
Circularity
Couplings
Dispersions
Exact sciences and technology
Gain
linear array
Linear arrays
Microwave antenna arrays
Radiators
Radiocommunications
Reflection
slot
substrate integrated waveguide (SIW)
Substrates
Telecommunications
Telecommunications and information theory
Tuning
tuning via
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Description
Summary:A substrate integrated waveguide (SIW) linear array is presented with a new circularly polarized (CP) element. The single radiator consists of four cross tilted slots. In addition, a pair of tuning metallic vias is included to improve the reflection of longest slots. A 16-element antenna prototype with -26-dB Taylor distribution and 1.5% residual power was designed, manufactured and measured to verify the new slot performance in an array configuration. A 17-dB peak gain, 1.86-dB axial ratio and 80% radiation efficiency were experimentally achieved at 17 GHz. A 3% usable bandwidth was obtained owing to frequency main beam tilt dispersion.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2014.2299823