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Mechanical Beam Steering Array Antenna With Tunable Height
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DOI：10.1109/LAWP.2022.3181162.png)
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摘要
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This letter presents a mechanical beam steering array antenna (MBSA) with tunable height elements. Each antenna element is composed of a U-slot radiation patch and a stepper motor supported by the three-dimensional-printed structure. By controlling the height of each antenna element using a stepper motor, an arbitrary phase shift value in the range of 0 degrees similar to 360 degrees can be achieved. In addition, steering high-gain beams can be generated by flexibly adjusting the height of each antenna element. A prototype of 8 x 8 MBSA was designed and fabricated to realize beam scanning in the pitch angle range from -40 degrees to 40 degrees in the xoz- plane and near-field focusing. The measured gain of MBSA is 23.3 dBi with an aperture efficiency of 85.7% at 10 GHz. The proposed MBSA has the advantages of simple structure, low cost and high stability, which can be applied in satellite communication systems.
Keyword:
Antennas
Microstrip antennas
Antenna measurements
Gain
Planar arrays
Apertures
Antenna radiation patterns
Array antenna
mechanically beam steering
tunable height
期刊
IF:
4.8
论文数:
1.0W
被引数:
2.8W
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