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Keywords = curved dual-port waveguide

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17 pages, 12528 KB  
Article
X-Band Active Phased Array Antenna Using Dual-Port Waveguide for High-Power Microwave Applications
by Rong Liu, Naizhi Wang, Tong Li, Ruoqiao Zhang and Hongchao Wu
Electronics 2022, 11(23), 4064; https://doi.org/10.3390/electronics11234064 - 6 Dec 2022
Cited by 3 | Viewed by 4595
Abstract
An X-band active phased array horn antenna with high power capacity and high peak power is proposed in this paper. At the horn aperture, the baffles are loaded to suppress higher-order modes and eliminate blind spots during beam scanning. Straight walls are added [...] Read more.
An X-band active phased array horn antenna with high power capacity and high peak power is proposed in this paper. At the horn aperture, the baffles are loaded to suppress higher-order modes and eliminate blind spots during beam scanning. Straight walls are added to improve impedance matching. Considering that the peak power that T/R modules can provide is very limited, the proposal of a dual-port waveguide breaks through the bottleneck of the power capacity of a single-port input for the first time. The proposed curved dual-port waveguide is used to connect the horn antenna and the T/R module, which is verified to improve the power capacity of the overall internal structure. Simulated and measured results show that VSWR ≤ 2 in the frequency range of 7.5–8.5 GHz. There is no grating lobe in the ±10° scanning range and the maximum gain drop does not exceed 0.4 dB. The power capacity of the proposed HPM array is 56.34 MW. The phased array antenna has the characteristics of flexible scanning, small size, and high gain, and can be applied in high-power microwave systems. Full article
(This article belongs to the Section Microwave and Wireless Communications)
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