A Compact Multi-Frequency, High Power Radiating System Combining Dual-Band, Electrically Small Magnetic EZ Antennas and Multi-Frequency Standing Wave Oscillator Sources

Ramon, Eric S.; Tyo, J. Scott; Ziolkowski, Richard W.; Skipper, Michael C.; Abdalla, Michael D.; Martin, Josh; Altgilbers, L.L.

doi:10.1109/tap.2014.2313135

Cited by 11 publications

(6 citation statements)

References 14 publications

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“…Therefore, the difference in the three current distributions forms three shaped beams in the radiation field. In this work, the proposed antenna works at 9.375 GHz, the DS is 80 MV/m according to [36], then the power capacity can be estimated from (4). The simulation results show that the maximum E max, sim of the antenna with three shaped beams is 2250 V/m, as seen Fig.…”

Section: Power Handling Capabilitymentioning

confidence: 91%

“…Secondly, the HPM antenna is required to feature high-power capacity that matches the power output from HPM sources, and maintains the absence of dielectric breakdown or the use of vacuum or SF 6 gas [3,4].…”

Section: Introductionmentioning

confidence: 99%

“…In order to achieve a compact size, Vlasov antenna [8], modetransducing antenna [9], mode converter with radiant horn [10][11][12][13] and radial line helical or slot array antenna [14,15] are the most representative HPM antennas. In recent decades, there are few reports on compact HPM antennas yet [4,13,16], and few researches of compact HPM antennas with shaped beam have been investigated. Therefore, it is desirable to explore applications of the HPM feed antenna with the broad beam [17], the Gaussian beam [18] and the conical beam [19], as well as the application of electromagnetic pulse bomb [20].…”

Section: Introductionmentioning

confidence: 99%

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Compact coaxial slotted‐cavity feed antenna with shaped‐beam pattern for high‐power microwave using high‐order modes and polarisation cancellation techniques

Yang

et al. 2020

IET Microwaves, Antennas & Propagation

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The coaxial slotted‐cavity antenna is an easily‐manufactured, novel high‐power microwave antenna developed specifically for its compact and shaped‐beam characteristics. It can directly cascade with the high‐power microwave source, and radiate linear‐polarisation electromagnetic wave without extra power dividers and mode converters, which obtains a low profile. In this study, a double‐layer coaxial cavity operating in two high‐order modes is introduced to eliminate the high‐order interference modes caused by structural discontinuities, and three shaped beams on the compact aperture can be achieved by the polarisation cancellation technique. Unique proprieties of three shaped beams, namely the peak of gain enhancement beam, the ripple of Gaussian beam and the null depth of conical beam are investigated, all of which can be controlled by the rotation angle of three phase adjusted slot pairs. This study demonstrates the design process of such antenna, and verifies it against simulation and experimental results. The measured return‐loss of all three shaped beams are higher than 13 dB, while the corresponding radiation efficiencies are not lower than 98.9%. Furthermore, the estimated minimum power capacity of such antenna exceeds 1.26 GW at 9.375 GHz, making it a highly potential candidate in application towards high‐power microwave.

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Section: Power Handling Capabilitymentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Compact coaxial slotted‐cavity feed antenna with shaped‐beam pattern for high‐power microwave using high‐order modes and polarisation cancellation techniques

Yang

et al. 2020

IET Microwaves, Antennas & Propagation

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“…Our goal is to be able to understand how the feeding structure couples to the TEM mode so that we can tailor the extraction of energy from the feeding line into the radiating elements in the array. Once the energy is extracted, we can control the distribution and polarization of the aperture fields by proper orientation of the near field resonant element in the EZ antenna [7], [8]. Figure 2 shows several of the parameters of the single element as the properties of the probe are altered.…”

Section: Element Feed and Arrayingmentioning

confidence: 99%

Using electrically-small HPEM antenna array elements to divide power and shape aperture fields

Esmati

Powell

Tyo

2018

2018 IEEE International Symposium on Antennas and Propagation &Amp; USNC/URSI National Radio Science Meeting

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We demonstrate the development of feeding networks for use with arrays of electrically small EZ antennas for HPEM applications. EZ antennas have been demonstrated for use in high power applications, and our group previously shown that they can be used in array configurations for power combining and mode conversion. In this study, we present a detailed examination of the antenna probe design for coaxial waveguide feed system, and we show how the parameters of the feeding structure can be used to tailor the coupleing between the feed network and the radiating element. Though numerical modeling, simple circuit analysis, and experimental verification, we explore the degrees of freedom available to us in shaping the aperture field distribution using dense arrays of these electrically small elements fed by waveguides or cavities.

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“…However, its HPM antenna has the defects of huge size and single-aperture radiation, so it is difficult to be used in highfrequency microwave devices. Common HPM antennas with a mode converter include Vlasov antennas [8][9][10], helical antennas [11][12][13], leaky waveguide antennas [14][15][16][17], horn antennas [18][19][20][21][22][23][24][25], parabolic reflector antennas [26,27], all-metal antenna [28,29] and EZ antennas [30,31]. The Vlasov antenna can generate a narrow radiation beam by configuring different circular waveguide opening shapes with a parabolic cylindrical reflector.…”

Section: Introductionmentioning

confidence: 99%

X-Band Active Phased Array Antenna Using Dual-Port Waveguide for High-Power Microwave Applications

Liu

Wang

et al. 2022

Electronics

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An X-band active phased array horn antenna with high power capacity and high peak power is proposed in this paper. At the horn aperture, the baffles are loaded to suppress higher-order modes and eliminate blind spots during beam scanning. Straight walls are added to improve impedance matching. Considering that the peak power that T/R modules can provide is very limited, the proposal of a dual-port waveguide breaks through the bottleneck of the power capacity of a single-port input for the first time. The proposed curved dual-port waveguide is used to connect the horn antenna and the T/R module, which is verified to improve the power capacity of the overall internal structure. Simulated and measured results show that VSWR ≤ 2 in the frequency range of 7.5–8.5 GHz. There is no grating lobe in the ±10° scanning range and the maximum gain drop does not exceed 0.4 dB. The power capacity of the proposed HPM array is 56.34 MW. The phased array antenna has the characteristics of flexible scanning, small size, and high gain, and can be applied in high-power microwave systems.

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A Compact Multi-Frequency, High Power Radiating System Combining Dual-Band, Electrically Small Magnetic EZ Antennas and Multi-Frequency Standing Wave Oscillator Sources

Cited by 11 publications

References 14 publications

Compact coaxial slotted‐cavity feed antenna with shaped‐beam pattern for high‐power microwave using high‐order modes and polarisation cancellation techniques

Compact coaxial slotted‐cavity feed antenna with shaped‐beam pattern for high‐power microwave using high‐order modes and polarisation cancellation techniques

Using electrically-small HPEM antenna array elements to divide power and shape aperture fields

X-Band Active Phased Array Antenna Using Dual-Port Waveguide for High-Power Microwave Applications

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