Development of high power microwave technology

Chen, Kaibai; Zhou, Xiaodong

doi:10.1109/itnec.2019.8729278

Cited by 7 publications

(4 citation statements)

References 24 publications

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“…As high-power microwave (HPM) technology continues to develop, HPM systems have been widely applied in military, medical, energy, and other felds [1,2]. In simple terms, an HPM system consists of primary power, pulsed power, an HPM source, and an HPM antenna [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

An EIRP Measurement Method of High-Power Microwave Systems Based on Near-Field Testing

Hu,

Su,

Zhang

et al. 2024

International Journal of Antennas and Propagation

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The equivalent isotropic radiated power (EIRP) of high-power microwave (HPM) systems is a core-evaluating indicator. In practical testing, locating a suitable test site for the far-field method becomes challenging due to the requisite antenna separation. The conventional near-field method necessitates the extraction of the antenna’s near-field distribution, resulting in a testing system of intricate complexity and diminished efficiency. Therefore, the traditional near-field method cannot be directly applied in HPM systems. In the present study, a new EIRP measurement method for HPM systems based on near-field testing was proposed. First, a monitoring antenna of a considerable scale is positioned within the near-field vicinity of the HPM antenna to capture radiation power, thereby deriving its equivalent input power. Subsequently, according to the EIRP definition and the measured gain of the HPM antenna, the EIRP of the HPM system can be acquired. Theoretical research on this measurement method was conducted, the electromagnetic simulation model was constructed, and a comprehensive analysis through simulation was undertaken. A measurement system was developed and verified experimentally. The results demonstrate the precision of this approach in determining the EIRP of the HPM system, thereby serving as a valuable tool for assessing the power-handling capability of the HPM antenna. The test error is ±0.5 dB.

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Section: Introductionmentioning

confidence: 99%

An EIRP Measurement Method of High-Power Microwave Systems Based on Near-Field Testing

Hu,

Su,

Zhang

et al. 2024

International Journal of Antennas and Propagation

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“…A necessary and sufficient condition for the optimal control for minimizing the control cost was given as a positive definition condition of a matrix [14]. A heuristic predictive control [15] and a novel compensator [16] were also proposed to provide the stabilization of NCS for different channel conditions.…”

Section: Introductionmentioning

confidence: 99%

“…Numerous contemporary devices provide users with a plethora of network access options, exemplified by the seamless transition between 4G and 5G networks or 5G and Wi-Fi networks on smartphones. However, existing research, to the best of the author's knowledge, predominantly assumes the simultaneous availability of information from multiple channels, even considering potential data loss due to packet errors [7][8][9][10][11][12][13][14][15][16]. It is important to note that the majority of control systems and devices traditionally accommodate only a single connection at any given time.…”

Section: Introductionmentioning

confidence: 99%

Channel Switching Algorithms for a Robust Networked Control System with a Delay and Packet Errors

Yang

2024

Electronics

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Redundancies in modern systems, including multiple channels, processes, and storages, are often exploited to ensure robust operation. Similarly, a Networked Control System (NCS) may utilize multiple channels to facilitate reliable information transfer in case of channel failure. To enhance the performance of Linear Quadratic Gaussian (LQG) control in environments with multiple channels, delays, and packet errors, we propose channel-switching algorithms. Leveraging the encoder and decoder structure for channel modeling, we derive the decoder estimation error covariance matrix, characterizing LQG control performance with respect to delay. Based on this insight, we develop two threshold-based channel-switching algorithms, proven to ensure finite total decoder estimation error variance under certain conditions. Specific conditions are also identified where the proposed algorithms offer improved probabilistic stability. Numerical simulations confirm the superior performance of the proposed algorithms compared to conventional methods across diverse channel environments. Notably, the proposed algorithms demonstrate near-optimal performance in a practical operational scenario involving multiple channels, specifically 5G cellular link and Starlink.

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“…HPM systems are strong electromagnetic radiation devices (also known as electromagnetic pulse or RF weapons) with frequencies ranging from 1 to 300 GHz and peak power above 100 MW, or average power above 1 MW [9,10], for example, the US military's Counter-electronics High-powered Microwave Advanced Missile Project (CHAMP). Another typical system is the Krasukha-2 vehicle-mounted high-powered microwave system that can interfere with early warning aircraft with a range from 150 to 300 km on display in Russia [11][12][13]. The above HPM systems necessitate the use of FSS to safeguard sensitive electronic components.…”

Section: Introductionmentioning

confidence: 99%

Miniaturised element frequency selective surface design for high power microwave applications

Wu,

Xu,

et al. 2023

IET Microwaves Antenna & Prop

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A third‐order miniaturised element frequency selective surface (MEFSS) for high‐power microwave (HPM) systems is proposed. The MEFSS design is characterised by the excellent capability to handle high‐power waves and the stable frequency response at large incidence angles. Through combining the particle swarm optimisation algorithm and the equivalent circuit method to improve the efficiency, the design has low resonant temperature while maintaining a low maximum field enhancement factor. A theoretical guide for the selection of substrate parameters in high‐power systems is provided. Instead of being as small as possible, the loss tangent should be properly selected to reach a balance between metal loss and dielectric loss. To the author's best knowledge, it is the first time in‐band low temperature and out‐of‐band high temperature suppression at various incidence angles are realised. The results show that the frequency response remains stable for incident angles up to 60°, and the maximum temperature is reduced from 148°C to 44°C for incident power density of 10 kW/m2. A MEFSS prototype was fabricated, and the transmission coefficients were measured. The full‐wave simulation and measurement results agree well. It has significance to the engineering progress of FSS as radomes for HPM antenna systems.

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Development of high power microwave technology

Cited by 7 publications

References 24 publications

An EIRP Measurement Method of High-Power Microwave Systems Based on Near-Field Testing

An EIRP Measurement Method of High-Power Microwave Systems Based on Near-Field Testing

Channel Switching Algorithms for a Robust Networked Control System with a Delay and Packet Errors

Miniaturised element frequency selective surface design for high power microwave applications

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