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Wide-Angle Azimuthal Scanning Array With Elevational Scanning Ability
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DOI：10.1109/LAWP.2025.3554726.png)
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Abstract
En 中文
Azimuth wide-angle scanning is crucial for airborne applications. However, many arrays lack pitch-plane scanning due to endfire radiation patterns, where radiation from rear units passes through front units, causing mutual coupling and mismatch. To overcome these limitations, this letter presents a 2-D broadband azimuthal wide-angle scanning array antenna featuring log-periodic monopole elements, each loaded with five crescent-shaped top hats, operating in the 2.93 GHz to 4.05 GHz range with a beamwidth exceeding 150$^{\circ }$. A 2 × 3 array is developed with decoupling microstrip structures based on the internal multiport method integrated between the elements. This array supports azimuthal scanning of $\pm$ 90° and elevation-plane scanning from 30° to 75°, with an active voltage standing-wave ratio (VSWR) below 3 in the 3.35 GHz to 3.58 GHz band, enhancing network coverage and communication quality.
Keywords:
Endfire array
internal multiport method (IMPM)
large angle scanning
top hat antenna
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4.8
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Cited Papers
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On the Effects of Calibration Errors and Mutual Coupling on the Beam Pattern of an Antenna Array
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