Design and experiment study of compact circular-rectangular waveguide mode converter

Zhao, Xuhao; Yuan, Chengwei; Zhang, Qiang; Zhao, Lishan

doi:10.1063/1.4959108

Cited by 6 publications

(3 citation statements)

References 16 publications

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“…The MILO produced a HPM pulse at 1.57 GHz, 1.2-2 GW, and for 52ns. The output mode of the MILO is TM01 mode and firstly converted into rectangular TE10 mode by a circular-rectangular mode converter designed by our laboratory [28]. After that, the TE10 mode is fed into the leaky-wave antenna.…”

Section: B High Power Testmentioning

confidence: 99%

An L-Band Leaky-Wave Array Antenna for High Power Microwave Applications

Bi¹,

Yuan²,

Zhang³

et al. 2023

Preprint

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<p>This work seeks a novel design for a compact leaky-wave array antenna for high-power microwave (HPM) applications. The leaky-wave waveguide antenna is made of rectangular waveguide with groups of non-resonant closely-spaced slots in the waveguide’s broad-wall. By this means, more slots can be set in a unit length with lower radiation power through each slot, then higher power-handling capacity and a compact longitudinal dimension and height can be achieved. An L-band leaky-wave waveguide antenna centered at 1.57 GHz has been designed and experimentally studied. The results show that the radiation efficiency of the antenna is more than 97% and the power-handling capacity of a single waveguide exceeds 1.3 GW. In addition, a 5-waveguide array antenna was also designed. The array antenna has an aperture efficiency of 76.6% and the beam scanning range can reach ±40° in H-plane, which would be suitable for many HPM applications.</p>

show abstract

Section: B High Power Testmentioning

confidence: 99%

An L-Band Leaky-Wave Array Antenna for High Power Microwave Applications

Bi¹,

Yuan²,

Zhang³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…The MILO produced an HPM pulse at 1.57 GHz, 1.2-2 GW, and for 52ns. The output mode of the MILO is TM01 mode and firstly converted into rectangular TE10 mode by a circular-rectangular mode converter designed by our laboratory [28]. After that, the TE10 mode is fed into the leaky-wave antenna.…”

Section: B High Power Testmentioning

confidence: 99%

An L-Band Leaky-Wave Array Antenna for High-Power Microwave Applications

Yuan

Zhang

et al. 2023

IEEE Trans. Antennas Propagat.

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This work seeks a novel design for a compact leaky-wave array antenna for high-power microwave (HPM) applications. The leaky-wave antenna is made of a rectangular waveguide with closely spaced non-resonant slots in the broad-wall of the waveguide. By this means, more slots can be set within a unit length and less energy will radiate from each slot, then higher power-handling capacity can be achieved. An L-band leaky-wave waveguide antenna centered at 1.57 GHz is designed and experimentally studied. The results show that the radiation efficiency of the antenna is 97% and the power-handling capacity of a single waveguide exceeds 1.3 GW. In addition, a 5-waveguide array antenna is also designed. The antenna array has an aperture efficiency of 76.6% and the beam scanning range can reach ±40° in H-plane, which would be suitable for many HPM applications.

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“…The input power, coming from a laser source, is injected into the two hollow-core TE 10 -like mode waveguides (1 and 2) that arrive to the mode converter section. Here, the waves are converted into the fundamental accelerating TM 01 -like mode, which propagates along the hollow-core central accelerating waveguide (beam channel) [11]. When the wave reaches the end of the accelerating channel (that can be arbitrarily long), it is back-converted into two waves, which are picked up by a second mode converter (3 and 4) and driven out of the structure.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of a Hollow-Core Woodpile-Based Mode Launcher for Dielectric Laser Accelerators

et al. 2022

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Hollow core microstructures powered by infrared lasers represent a new and promising area of accelerator research, where advanced concepts of electromagnetism must be used to satisfy multiple requirements. Here, we present the design of a dielectric electromagnetic band gap (EBG) mode launcher–converter for high-power coupling in dielectric laser accelerators (DLAs). The device is based on a silicon woodpile structure, and it is composed of two perpendicularly coupled hollow-core waveguides—a transverse electric (TE)-like mode waveguide (excited from laser power) and a transverse magnetic (TM)-like mode (accelerating) waveguide—in analogy with the TE10-to-TM01 waveguide mode converters of radio frequency (RF) linear accelerators (LINACs). The structure is numerically designed and optimized, showing insertion losses (IL) <0.5 dB and efficient mode conversion in the operating bandwidth. The operating wavelength is 5 μm, corresponding to a frequency of ≈60 THz, in a spectral region where solid-state continuous-wave (CW) lasers exist and are actively developed. The presented woodpile coupler shows an interaction impedance in the order of 10 kΩ, high power handling and efficiency.

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Design and experiment study of compact circular-rectangular waveguide mode converter

Cited by 6 publications

References 16 publications

An L-Band Leaky-Wave Array Antenna for High Power Microwave Applications

An L-Band Leaky-Wave Array Antenna for High Power Microwave Applications

An L-Band Leaky-Wave Array Antenna for High-Power Microwave Applications

Numerical Simulation of a Hollow-Core Woodpile-Based Mode Launcher for Dielectric Laser Accelerators

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