Near-Field Plane Distribution of Rectangular Waveguide Excited by Dominant and Higher-Order Modes

Gorobets, N. N.; Ovsyannikova, E.E.; Shishkova, A.V.

doi:10.1109/msmw.2007.4294778

Cited by 4 publications

(4 citation statements)

References 2 publications

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“…It is known [5] that optimum relation between the sides of pyramidal horn can be found to provide the maximal symmetry of the pattern in Е-and Н-planes. In particular, at the waveguide of 1 a λ = and 1.33 b λ = sides, the pattern at the far zone has near axial-symmetric form.…”

Section: Numerical Results and Analysismentioning

confidence: 99%

Near-field radiation from sectoral horns

Shishkova

Gorobets

Ovsyannikova

2007

2007 6th International Conference on Antenna Theory and Techniques

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The purpose of the presented work is to investigate the forming of radiation at the plates in the «near-field reactive» regions of rectangular waveguides and sectoral horns. The influence of quadratic phase distortions at the horn aperture on forming the radiation in the near-field region is investigated. The possibility to form the axisymmetric radiation characteristics of horn radiators in near zone by means of appropriate choice of the value of quadratic phase distortions and horn geometrical sizes is demonstrated.

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Section: Numerical Results and Analysismentioning

confidence: 99%

Near-field radiation from sectoral horns

Shishkova

Gorobets

Ovsyannikova

2007

2007 6th International Conference on Antenna Theory and Techniques

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“…This method is based on the known position of electrodynamics about the different nature of changes in the electromagnetic field strength in the near and far zones [1,4,5,10,11]. The components of the electric field vector emitted by the electric dipole p in spherical coordinates are determined by the expressions:…”

Section: Fig 1 the Main Stages Of The Process Of Identifying Technimentioning

confidence: 99%

Methods for Assessment and Forecasting of Electromagnetic Radiation Levels in Urban Environments

Bakhtiiarov

Lavrynenko

Lishchynovska

et al. 2021

IAPGOS

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Methods for synthesis a structural diagram of the processes for detecting and locating technical information leakage channels are analysed. Software for defining a controlled room zone was also presented. A proprietary approach to search the electromagnetic environment under radio interference has been developed to detect devices for unauthorized control of acoustic information using microphones and transmission of this information using a radio channel.

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“…where w(z) is a vector containing the mode amplitudes, e −γz is a vector containing the exponential terms of the mode propagation constant, N is a matrix of the coupling factors given by (22) and R is a matrix with the source terms given by (23). Appropriate mode excitation should be located in regions where the sum of the mode field profiles is maximum and avoid those where it vanishes.…”

Section: Optimum Positioning For Mode Excitationmentioning

confidence: 99%

“…A Gaussian beam launched axially into a circular fiber is used in [20], for exciting low-order modes. Finally, only canonical cases have been reported for the integration of antennas in guiding structures [9,12,14,22,23,51].…”

Section: Optimum Field Excitation For Mode Excitationmentioning

confidence: 99%