A High Directive Paraboloidal Reflector Antenna for High Far Voltage in an Ultra Wideband Source System

Ryu, Jiheon; Lee, Jongwon; Chin, Huicheol; Yeom, J. H.; Kim, Dong-Won; Kwon, Hae-Ok; Han, Seung Ho; Choi, Jin Soo

doi:10.1109/tps.2013.2272472

Cited by 22 publications

(4 citation statements)

References 8 publications

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“…Similarly, feeding a passive reflector with a dipole element is also a widely used topology. was proposed by Jiheon [62] with his previously developed IAS antennas as feed. Here a parabolic reflector of 1.5 m which is nearly 10times more than the size of the dipole is considered and the dipole is placed at the optimized focal point of the reflector for maximum efficiency radiation.…”

Section: Dipole Fed Reflector Antennasmentioning

confidence: 99%

A comprehensive review of high voltage wideband and ultra-wide band antennas for IEMI applications

D¹,

Azeemuddin²

2021

Eng. Res. Express

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A comprehensive review paper concerning the geometry, topology, implementation methodology, feeding mechanisms and application domain of wideband and ultrawideband (UWB) antennas for high power applications is presented. Single element antennas, reflector based antennas and array type antennas developed across the globe are taken into account. The antennas considered here are grouped based on their similarity in structure and their performance is compared based on their mode of implementation. This information provides a guidance to the selection of different geometries for various applications especially in the applications pertaining to intentional electromagnetic interference(IEMI). Few antenna models were simulated in CST for the transient response to show their typical transient responses. An exhaustive comparative table is presented with the worldwide designs and some indigenous developments.

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Section: Dipole Fed Reflector Antennasmentioning

confidence: 99%

A comprehensive review of high voltage wideband and ultra-wide band antennas for IEMI applications

D¹,

Azeemuddin²

2021

Eng. Res. Express

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“…High-power microwave (HPM) technology is of great interest in many fields of research, such as food sterilization [1], medical imaging [2], biomedical engineering [3], material processing [4], and intentional electromagnetic interference (IEMI) [5]- [7]. In previous research, we have studied the design and transient simulation of HPM generators for IEMI testing [8]- [10]. Because an HPM-based IEMI system can be a serious threat to modern electronic systems, the IEMI susceptibilities of infrastructure components [11], [12], transformers [13], and IC devices have been investigated [14].…”

Section: Introductionmentioning

confidence: 99%

High-Q Switched Oscillator With Capacitive Voltage Divider for Generating Mesoband High-Power Microwave Pulses

2021

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The switched oscillator (SWO) is a quarter-wave oscillator capable of generating mesoband high-power microwave (HPM) pulses. This paper presents a novel high-quality factor (Q) SWO with a capacitive voltage divider (CVD). Unlike conventional SWOs, the transmission line energy of the proposed SWO is gradually coupled with the output load through the CVD. Thus, the proposed SWO can produce a mesoband pulse with a much higher power spectral density within the coupling bandwidth of a target in HPM effect testing. The frequency-domain output-voltage equation of the proposed SWO was obtained through a theoretical analysis of the equivalent circuit of the SWO. Through a numerical analysis, the time-domain output waveform of the proposed SWO was demonstrated to have a high quality factor, and the circuit parameters of the equivalent circuit of the SWO were set to achieve a high quality factor. The circuit parameters selected in the numerical analysis were used in an electromagnetic simulation to determine the design parameters of the parallel-plate transmission line (PPTL)-based SWO with the CVD built on a printed circuit board. The proposed SWO was fabricated and its performance was assessed. For a breakdown voltage of 8.7 kV, the output voltage of the fabricated SWO showed a quality factor of 25, which is more than two times larger than the quality factors of conventional SWOs. Thus, the proposed SWO was demonstrated to produce high-Q mesoband HPM pulses, and it has the potential to be applied in HPM effect testing. Moreover, the proposed SWO improves operator safety by preventing the output load from being charged by a highvoltage power supply. INDEX TERMS High-power microwave, switched oscillator, capacitive voltage divider, mesoband generator.

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“…A non-invasive PEF technique was introduced for industrial food processing [8]. Furthermore, numerous studies have been conducted on the generation and radiation of intensive PEF for HPEM effect testing of electric devices [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Time-Domain Pulse Waveform Correction for Pulsed Electric Field Measurement in Microwave Cable with Frequency-Dependent Loss

Jeong

Kim

Ryu

2021

J Electromagn Eng Sci

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This paper presents a method that corrects pulse waveforms distorted by the frequency-dependent loss of microwave cables in measuring pulsed electric fields (PEFs). Because the distortion resulting from the microwave cable disrupts accurate PEF measurements, the distorted pulse should be corrected for precise PEF effect testing. The proposed correction method is achieved by a transfer function that is determined by ABCD parameters calculated from the scattering parameters of the cable. A 10-m microwave cable is tested to validate the proposed method, where the input pulse is a 2-ns sine pulse of a single cycle. Here, the output pulse, scattering parameters, and cable resistance are measured. These measurement results are used to represent the transfer function in MATLAB for the proposed correction method. The test results show that the corrected pulse obtained from the transfer function has an error of 4.5% in the peak-to-peak voltage and an error of 0.8% in the bipolar pulse width compared to the reference input pulse. The errors of PEF measurement decrease dramatically by using the proposed correction method. Moreover, the correction method is validated for various pulse durations, pulse shapes, and cable types.

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A High Directive Paraboloidal Reflector Antenna for High Far Voltage in an Ultra Wideband Source System

Cited by 22 publications

References 8 publications

A comprehensive review of high voltage wideband and ultra-wide band antennas for IEMI applications

A comprehensive review of high voltage wideband and ultra-wide band antennas for IEMI applications

High-Q Switched Oscillator With Capacitive Voltage Divider for Generating Mesoband High-Power Microwave Pulses

Time-Domain Pulse Waveform Correction for Pulsed Electric Field Measurement in Microwave Cable with Frequency-Dependent Loss

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