Influence of magnetic window for mitigating on antenna performance in plasma

Xing Xiaojun; Zhao Qing; Zheng Ling; Tang Jianming; Chen Yuxu; Liu Shuzhang

doi:10.3788/HPLPB20132508.1965

Volume 25 Issue 08

Nov. 2013

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Article Navigation > High Power Laser and Particle Beams > 2013 > 25(08): 1965-1969

Xu Gang, Xie Ping, Liao Yong, et al. Frequency response of switched high power mesoband electromagnetic pulse generator[J]. High Power Laser and Particle Beams, 2013, 25: 2363-2367. doi: 10.3788/HPLPB20132509.2363

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Xing Xiaojun, Zhao Qing, Zheng Ling, et al. Influence of magnetic window for mitigating on antenna performance in plasma[J]. High Power Laser and Particle Beams, 2013, 25: 1965-1969. doi: 10.3788/HPLPB20132508.1965

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Influence of magnetic window for mitigating on antenna performance in plasma

doi: 10.3788/HPLPB20132508.1965

1.
Institute of Physical Electronics,University of Electronic Science and Technology of China,Chengdu 610054,China

Received Date: 2013-01-24
Rev Recd Date: 2013-03-20
Publish Date: 2013-06-19

Abstract

Abstract

The communication blackout caused by the plasma sheath around a hypersonic vehicle flying in atmosphere is a problem to aerospace vehicles. When a vehicle enters the communication blackout phase, it loses all communication including GPS signals, data telemetry, and voice communication. The communication blackout becomes an even more critical issue with development of re-entry vehicles missions. During such missions, the communication loss caused by radio blackout introduces significant problems related to the vehicles safety. This paper analyzes the interaction of electromagnetic waves with plasma in an external magnetic field in theory. The external magnetic field can improve the transmission of electromagnetic waves in plasma from the theoretical analysis. The magnetic window antenna which is designed by integrating the permanent magnet and the helical antenna is proposed. The performance of the helical antenna and magnetic window antenna in plasma is studied. The simulation results show that using the magnetic window antenna can weaken the influence on the antenna performance in plasma. The magnetic window antenna makes it possible for electromagnetic waves to spread in plasma. This provides another way to solve the problem of spacecraft re-entry blackout.
- magnetic window antenna,
- helical antenna,
- plasma,
- communication outage

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