Design of a 220GHz Vlasov (antenna) mode converter

Zhang, Xianrong; Wang, Hongtao; Cheng, You‐Feng; Wen, Shuhao

doi:10.1109/mmwcst.2012.6238113

Cited by 4 publications

(2 citation statements)

References 5 publications

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“…However, its HPM antenna has the defects of huge size and single-aperture radiation, so it is difficult to be used in highfrequency microwave devices. Common HPM antennas with a mode converter include Vlasov antennas [8][9][10], helical antennas [11][12][13], leaky waveguide antennas [14][15][16][17], horn antennas [18][19][20][21][22][23][24][25], parabolic reflector antennas [26,27], all-metal antenna [28,29] and EZ antennas [30,31]. The Vlasov antenna can generate a narrow radiation beam by configuring different circular waveguide opening shapes with a parabolic cylindrical reflector.…”

Section: Introductionmentioning

confidence: 99%

X-Band Active Phased Array Antenna Using Dual-Port Waveguide for High-Power Microwave Applications

Liu

Wang

et al. 2022

Electronics

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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.

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Section: Introductionmentioning

confidence: 99%

X-Band Active Phased Array Antenna Using Dual-Port Waveguide for High-Power Microwave Applications

Liu

Wang

et al. 2022

Electronics

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“…Fazaelifar and Fatorehchy proposed in [12] two methods for increasing the gain of a bevel-cut antenna, one using a parabolic cylinder reflector and the second using a horn. Moreover, Zhang et al studied the step cut in the presence of a parabolic reflector [13]. Other work discussed the use of dualreflector in the presence of Vlasov antennas [14,15].…”

Section: Introductionmentioning

confidence: 99%

Improved Vlasov Antenna with Curved Cuts and Optimized Reflector Position and Shape

Misilmani

Al‐Husseini

Kabalan

2015

International Journal of Antennas and Propagation

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This paper presents a Vlasov antenna with curved cut shape and improved reflector position and geometry suitable for high power microwave applications. The curved shape of the proposed cut totally eliminates the sharp edges and angles present in Vlasov antennas with step and bevel cuts. Furthermore, with the proposed reflector configuration, the wave is radiated in the direction of the axis of the waveguide. A Vlasov antenna, designed for operation at 3 GHz, is used to compare the three cut types. An additional comparison is conducted to validate the concept of the enhanced reflector position, using the bevel-cut antenna and the improved cut. The proposed antenna results in increased antenna gain and in good performance in terms of sidelobe level and half-power beamwidth, with maximum radiation directed toward the axis of the waveguide center.

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Study on a gyrotron quasi-optical mode converter for terahertz imaging

Zhang

Yang

2020

Journal of Electromagnetic Waves and Applications

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Design of a 220GHz Vlasov (antenna) mode converter

Cited by 4 publications

References 5 publications

X-Band Active Phased Array Antenna Using Dual-Port Waveguide for High-Power Microwave Applications

X-Band Active Phased Array Antenna Using Dual-Port Waveguide for High-Power Microwave Applications

Improved Vlasov Antenna with Curved Cuts and Optimized Reflector Position and Shape

Study on a gyrotron quasi-optical mode converter for terahertz imaging

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