The Effect of AC Excitation Frequency and Waveform on U-Shaped Monopole Plasma Antenna

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Tohidlo M.; HASHEMI S.M.; SADEGHIKIA F.

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Paper Information

Journal: JOURNAL OF RADAR Year:2020 | Volume:7 | Issue:2 (SERIAL No. 22) Page(s): 89-95

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Information Journal Paper

Title

The Effect of AC Excitation Frequency and Waveform on U-Shaped Monopole Plasma Antenna

Author(s)

Tohidlo M. | HASHEMI S.M. | SADEGHIKIA F. | Issue Writer Certificate

Keywords

Monopole U-Shaped Plasma AntennaQ1

Plasma AC ExcitationQ1

Variable FrequencyQ1

Different WaveformQ1

Abstract

Today, plasma technology has found significant applications in various industries including telecommunications. The high-ionization limit of plasma has made it a good conductor and a substitute for metal structures in high frequencies. In recent years, the plasma environment for the design of reconfigurable antenna structures, waveguides, and frequency-selective surfaces (FSS) has received more attention by scientific societies, especially space and military centers. This is because of the specific characteristics of the plasma environment that can be used to control and adapt the antenna for different purposes. The effects of plasma usage on the antennas include: improved sensitivity and directivity, low radar cross section (RCS), radiation pattern scanning, antenna array coupling and frequency tuning. Plasma can be created by many different ways such as surface wave driven excitation and direct or alternating current excitation. The purpose of this study has been to investigate the effect of alternating current excitation with different frequencies and waveforms on U-shaped monopole plasma antenna parameters including reflection coefficient, resonance frequencies and bandwidth. The results indicate that, in addition to its much lower power consumption, this type of excitation increases the bandwidth of the U-shaped antenna and its operating frequency up to 2 GHz. The plasma antenna sent or received signals, are applied to, or received by, a capacitive coupler. Also, various effects on antenna parameters including reflection coefficient reduction, central frequency shift and bandwidth variations were observed and measured, by changing the frequency and waveform (square, triangular, sinusoidal) of the plasma excitation current.

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APA: Copy

Tohidlo, M., HASHEMI, S.M., & SADEGHIKIA, F.. (2020). The Effect of AC Excitation Frequency and Waveform on U-Shaped Monopole Plasma Antenna. JOURNAL OF RADAR, 7(2 (SERIAL No. 22) ), 89-95. SID. https://sid.ir/paper/400719/en

Vancouver: Copy

Tohidlo M., HASHEMI S.M., SADEGHIKIA F.. The Effect of AC Excitation Frequency and Waveform on U-Shaped Monopole Plasma Antenna. JOURNAL OF RADAR[Internet]. 2020;7(2 (SERIAL No. 22) ):89-95. Available from: https://sid.ir/paper/400719/en

IEEE: Copy

M. Tohidlo, S.M. HASHEMI, and F. SADEGHIKIA, “The Effect of AC Excitation Frequency and Waveform on U-Shaped Monopole Plasma Antenna,” JOURNAL OF RADAR, vol. 7, no. 2 (SERIAL No. 22) , pp. 89–95, 2020, [Online]. Available: https://sid.ir/paper/400719/en

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