A Fan-Beam Radiator Using Waveguide's Narrow Wall for Horizontal Polarization and High Power

Devarapalli, Naga Ravi Kanth; Baum, Carl E.; Christodoulou, C.G.; Schamiloglu, E.

doi:10.1109/temc.2010.2099123

Cited by 13 publications

(3 citation statements)

References 5 publications

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“…For a better power handling capability, chamfer, fillet and other methods seem not sufficient to improve the power capacity of slot. The shaped slot [38] is only to make the electric field uniform in a two-dimensional plane rather than three-dimensional space. It is known that, the region exterior to the slot is treated as a parallel plate waveguide which can radiate into half space through the aperture in an infinite ground plane.…”

Section: E Horn-cavity Designmentioning

confidence: 99%

Design of a Novel Compact Slotted Cavity With Shaped Beam for High Power Microwave Feed Antenna Using Asymmetric High Order Mode

Yang

et al. 2019

IEEE Access

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In order to achieve a shaped beam on a compact aperture and reduce the cost and the volume, a conformal slotted cavity as a feed antenna for high-power microwave using the asymmetric high-order mode is investigated. The proposed antenna working in a high-order mode has merits on reducing the complexity of a power network and the volume of a mode converter. The alternate arrangement of the slot array is taken into account, and the asymmetric high-order mode TE 430 is selected to improve the symmetry of far-field pattern at the E-plane. A novel design of wide slot with the horn-cavity etched on the top surface of the upper cavity achieves the uniform aperture field and mitigates the maximum electric field enhancement, and calculated results verify that the proposed antenna is capable of high-power handling capability (above 1.29 GW in vacuum). The conformal slot array is introduced to obtain a shaped beam, which helps to illuminate reflect array with shaped aperture efficiently. The simulation and measured results show that the feed antenna achieves a low-profile structure of 2.4λ 0 × 2.8λ 0 × 0.8λ 0 , the 10-dB gain beamwidth of E-plane is 56.6 • at the operating frequency of 9.1 GHz, the maximum difference of the gain, and the 10-dB beamwidth angle between the two sides of main beam is no more than 1 dB and 1 • , respectively. INDEX TERMS Asymmetric high order mode, shaped beam, compact feed antenna, conformal array, high power microwave, horn-cavity, power handling capability, slotted cavity.

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Section: E Horn-cavity Designmentioning

confidence: 99%

Design of a Novel Compact Slotted Cavity With Shaped Beam for High Power Microwave Feed Antenna Using Asymmetric High Order Mode

Yang

et al. 2019

IEEE Access

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“…The antenna under consideration produces an electric field polarized along the broad beam width of the fanbeam radiation pattern. This work deals with the design of original array proposed in Devarapalli [1], by improving the original concept and scaling the design down to S-band. A X-band tunable CRLH-based feeding structure is proposed to function as a phase shifter.…”

Section: Introductionmentioning

confidence: 99%

A narrow-wall slotted waveguide antenna array for high power applications

Pan

Christodoulou

2014

2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)

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This work seeks novel designs of S-band high power microwave antennas based on rectangular waveguide narrowwall longitudinal-aperture array structure. A narrow-wall slotarray is proposed to achieve higher gain. It consists of two identical narrow-wall slot-arrays with a common broad wall. A much more uniform aperture electrical fieled distribution is obtained, resulting in a higher gain for the double narrow-wall slot-array waveguide antenna. A tunable CRLH-based feeding structure is proposed to feed the double narrow-wall slot array. By mechanically varying the length of the stubs, the proposed antenna shows capability of beam-steering performance.

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“…The activation of EEDs due to EM field exposure depends on the intensity and the spectral content of the incident field. Narrow band systems, used to produce Intentional Electromagnetic Interferences (IEMI), can be efficiently used in EED neutralization by taking advantage of the resonant behavior of the EEDs 11 . If the transfer function between the incident field and the dissipated power in the EED is known, optimal coupling frequencies could be derived.…”

Section: Introductionmentioning

confidence: 99%

Susceptibility of Electro-explosive Devices to Microwave Interference

Pantoja¹,

Peña²,

Rachidi³

et al. 2013

DSJ

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In this paper, the electromagnetic susceptibility of electro-explosive devices (EEDs) including their connection wires is assessed statistically. The electromagnetic coupling and the thermal power dissipation are modeled to determine the activation condition due to an excitation with an external electromagnetic field. The reception properties of the connection wires are obtained numerically and validated experimentally; variations in their geometry are considered by means of a Monte Carlo approach. The optimal coupling frequency and the probability of activation of a typical wired EED as function of the magnitude of the excitation are obtained. A detonation probability of 95 per cent is obtained for a wired EED illuminated with a 2447 V/m incident field.

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A Fan-Beam Radiator Using Waveguide's Narrow Wall for Horizontal Polarization and High Power

Cited by 13 publications

References 5 publications

Design of a Novel Compact Slotted Cavity With Shaped Beam for High Power Microwave Feed Antenna Using Asymmetric High Order Mode

Design of a Novel Compact Slotted Cavity With Shaped Beam for High Power Microwave Feed Antenna Using Asymmetric High Order Mode

A narrow-wall slotted waveguide antenna array for high power applications

Susceptibility of Electro-explosive Devices to Microwave Interference

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