Broadband and High-Gain Embedded Probe-Fed Low-Profile High-Order-Mode Antennas

Zhao, Wenyu; Li, Xiuping; Chen, Zhi Ning

doi:10.1109/tap.2023.3291813

Cited by 6 publications

(1 citation statement)

References 26 publications

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“…Mode theory analysis indicates that the resonant frequency of a high-order mode exceeds that of a loworder mode. To excite the high-order resonant mode of the antenna, thereby achieving EL property and high gain, methods such as adding shorting pins [6][7][8][9], etching slots [10][11][12][13][14], and superposition of multiple modes can be employed [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Low sidelobe planar electrically large sparse array antenna with element number reduction based on genetic algorithm

Zhu,

Ma,

Wang

et al. 2024

IET Microwaves Antenna & Prop

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Conventionally, both electrically larger (EL) arrays and sparse arrays offer the advantage of element number reduction but disadvantage of high sidelobe levels. A new scheme of planar EL sparse array antenna based on a genetic algorithm (GA) to achieve low sidelobe with element number reduction is proposed. To begin with, EL sparse array antenna optimisation models based on GA for both linear and planar arrays are analysed. Then, an EL slot antenna element based on a 3 × 3 substrate integrated waveguide cavity is designed. An 8‐element linear EL sparse array antenna is designed and compared with a uniform array antenna, demonstrating a reduction in the maximum sidelobe level (MSLL) by nearly 4.6 dB. After that, a 4 × 8 element planar EL sparse array antenna is fabricated and measured. Compared to an 8 × 16 element planar EL uniform array antenna, the number of antenna elements is reduced by 75%, while the MSLL is reduced by approximately 3 dB. The measured −10 dB impedance bandwidth ranges from 25.3 to 27.8 GHz. At the central frequency, the radiation pattern achieves a peak gain of 29.6 dBi, exhibiting low sidelobe levels below −15.0 dB.

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