TEM antenna's arrays and high power radiators of UWB electromagnetic sub-nanosecond impulses

Fedorov, V. M.; Ostashev, V. E.; Ul’yanov, A. V.

doi:10.1109/piers.2017.8262390

Cited by 3 publications

(6 citation statements)

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“…Our radiators [6][7][8][9]13,14] were emitting waves of the USEMP sub-nanosecond duration in the frequency range 0.1-6 GHz and with an effective voltage potential ER = 20-400 kV. These impulse waves, as simulators of EM interference with a peak strength of 5-30 kV/m, were successfully used for testing electronic devices for EM compatibility or immunity to the EMI.…”

Section: Schematics Of the S-tem-horn Antennae And Advantages For Radiations Within 01-6 Ghz Frequenciesmentioning

confidence: 99%

“…This article presents analyses of the results of our works [6][7][8][9]13,14] concerning the creation and optimization of the high-power radiators for ultra-short electromagnetic This simple design for a two-story antenna structure has been used in antennae with an aperture height H in ≥ 30 cm and pulse repetition rate of its excitation of 1 kHz. In the case of fast antenna excitation, we used plates between the upper and lower story with insulation plate between them [13]. The rear side of the actual antennae was a metallic plate with damper resistors in the circuit of the electric current.…”

Section: Schematics Of the S-tem-horn Antennae And Advantages For Radiations Within 01-6 Ghz Frequenciesmentioning

confidence: 99%

“…This article presents analyses of the results of our works [6][7][8][9]13,14] concerning the creation and optimization of the high-power radiators for ultra-short electromagnetic pulse waves with a linear polarization E-field and quasi-monopolar impulses. Below, we give analyses of the physical processes in classical and shielded TEM horn antennae.…”

Section: Schematics Of the S-tem-horn Antennae And Advantages For Radiations Within 01-6 Ghz Frequenciesmentioning

confidence: 99%

“…These simulations confirmed the high efficiency of our antenna array on the basis of four S-TEM horns with shielding rectangular plates. The antennae were used in high-power radiators emitting EM waves of sub-nanosecond durations in a frequency band of 0.1-6 GHz [6][7][8][9]13].…”

Section: Analysis Of the Simulations: Analytical Model For Pulsed Radiation From A Phased Antenna Aperturementioning

confidence: 99%

“…Transient responses of the antennae were studied by simulations using the electromagnetic 3D code KARAT at the time domain [12] and experimentally with the use of our strip-line sensors for measurements of the impulse E field strength with a 0.03 ns rise time and 7 ns duration of the traveling EM waves [13]. Estimation of the radiation parameters from the radiators was also being done by using analytical models [6,14].…”

Section: Introductionmentioning

confidence: 99%

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Antenna Array with TEM-Horn for Radiation of High-Power Ultra Short Electromagnetic Pulses

et al. 2021

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An antenna array with short shielded transverse electromagnetic horns (S-TEM-horns) for emitting high-power radiation of ultra-short electromagnetic pulses (USEMP) has been created and researched. The antenna unit consists of an ultra-wideband antenna array with four S-TEM horns, with each connected to a two-wire HF transmission line, and these four lines are connected to an antenna feeder. This feeder is connected to a semiconductor generator with the following parameters: a 50 Ohm connector, 10–100 kV high-voltage monopolar pulses, a rise time of about 0.1 ns, FWHM = 0.2–1 ns, and pulse repetition rates of 1–100 kHz. The antenna array was designed and optimized to achieve a high efficiency of about 100% for the antenna aperture by using a 2 × 2 array with S-TEM-horns, with shielding rectangular plates for the return current. The transient responses were studied by simulation using the electromagnetic 3D code “KARAT” at the time domain and experimentally with the use of our stripline sensor for measurement of the impulse electrical field with a 0.03 ns rise time and a 7 ns duration at the traveling wave. The radiators were emitting USEMP waves with a hyperband frequency spectrum of 0.1–6 GHz. The radiation with an amplitude of 5–30 kV/m of the E-field strength at a distance of up to 20 m was successfully applied to test the electronics for immunity to electromagnetic interference.

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Section: Schematics Of the S-tem-horn Antennae And Advantages For Radiations Within 01-6 Ghz Frequenciesmentioning

confidence: 99%

Section: Schematics Of the S-tem-horn Antennae And Advantages For Radiations Within 01-6 Ghz Frequenciesmentioning

confidence: 99%

“…This article presents analyses of the results of our works [6][7][8][9]13,14] concerning the creation and optimization of the high-power radiators for ultra-short electromagnetic pulse waves with a linear polarization E-field and quasi-monopolar impulses. Below, we give analyses of the physical processes in classical and shielded TEM horn antennae.…”

Section: Schematics Of the S-tem-horn Antennae And Advantages For Radiations Within 01-6 Ghz Frequenciesmentioning

confidence: 99%

Section: Analysis Of the Simulations: Analytical Model For Pulsed Radiation From A Phased Antenna Aperturementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Antenna Array with TEM-Horn for Radiation of High-Power Ultra Short Electromagnetic Pulses

et al. 2021

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Measurements of Sub-Nanosecond Pulsed Electromagnetic Waves by Strip-Line Sensors with Long Transmitting Coaxial Cable

Fedorov

Ostashev

Тараканов

et al. 2018

2018 20th International Symposium on High-Current Electronics (ISHCE)

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Design of a High-Power Nanosecond Electromagnetic Pulse Radiation System for Verifying Spaceborne Detectors

Zhang,

Li,

Duan

et al. 2024

Sensors

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The Spaceborne Global Lightning Location Network (SGLLN) serves the purpose of identifying transient lightning events occurring beneath the ionosphere, playing a significant role in detecting and warning of disaster weather events. To ensure the effective functioning of the wideband electromagnetic pulse detector, which is a crucial component of the SGLLN, it must be tested and verified with specific signals. However, the inherent randomness and unpredictability of lightning occurrences pose challenges to this requirement. Consequently, a high-power electromagnetic pulse radiation system with a 20 m aperture reflector is designed. This system is capable of emitting nanosecond electromagnetic pulse signals under pre-set spatial and temporal conditions, providing a controlled environment for assessing the detection capabilities of SGLLN. In the design phase, an exponentially TEM feed antenna has been designed firstly based on the principle of high-gain radiation. The feed antenna adopts a pulser-integrated design to mitigate insulation risks, and it is equipped with an asymmetric protective loading to reduce reflected energy by 85.7%. Moreover, an innovative assessment method for gain loss, based on the principle of Love’s equivalence, is proposed to quantify the impact of feed antenna on the radiation field. During the experimental phase, a specialized E-field sensor is used in the far-field experiment at a distance of 400 m. The measurements indicate that at this distance, the signal has a peak field strength of 2.2 kV/m, a rise time of 1.9 ns, and a pulse half-width of 2.5 ns. Additionally, the beamwidth in the time domain is less than 10°. At an altitude of 500 km, the spaceborne detector records a signal with a peak field strength of approximately 10 mV/m. Particularly, this signal transformed into a nonlinear frequency-modulated signal in the microsecond range across its frequency spectrum, which is consistent with the law of radio wave propagation in the ionosphere. This study offers a stable and robust radiation source for verifying spaceborne detectors and establishes an empirical foundation for investigating the impact of the ionosphere on signal propagation characteristics.

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TEM antenna's arrays and high power radiators of UWB electromagnetic sub-nanosecond impulses

Cited by 3 publications

References 1 publication

Antenna Array with TEM-Horn for Radiation of High-Power Ultra Short Electromagnetic Pulses

Antenna Array with TEM-Horn for Radiation of High-Power Ultra Short Electromagnetic Pulses

Measurements of Sub-Nanosecond Pulsed Electromagnetic Waves by Strip-Line Sensors with Long Transmitting Coaxial Cable

Design of a High-Power Nanosecond Electromagnetic Pulse Radiation System for Verifying Spaceborne Detectors

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