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Patent

Antenna array with reduced mutual coupling between array elements

Peter Z. Petkov, +1 more
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TLDR
In this paper, a first horn is configured with an electrically conductive external surface proximate to the aperture, the external surface contoured so as to reduce mutual coupling between the first horn and an adjacent horn.
Abstract: 
An array of antenna feed elements includes a plurality of horns, each horn having an aperture and configured for transmission of electromagnetic energy therethrough. At least a first horn is configured with an electrically conductive external surface proximate to the aperture, the external surface contoured so as to reduce mutual coupling between the first horn and an adjacent horn. Where the electromagnetic energy is within a radio frequency (RF) band, the external surface is contoured so as to provide an abrupt change in a gap dimension between the first horn and an adjacent horn, the change occurring at a distance behind the aperture of equal to a multiple of one half the characteristic wavelength of the RF band.

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Method and apparatus for coupling an antenna to a device

Paul Shala Henry, +5 more
TL;DR: In this paper, the authors describe a system that receives, by a feed point of a dielectric antenna, electromagnetic waves from a core coupled to the feed point without an electrical return path, and radiates a wireless signal responsive to the electromagnetic waves being received at the aperture.
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Farhad Barzegar, +5 more
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TL;DR: In this article, the authors describe a device that facilitates transmitting electromagnetic waves along a surface of a wire that facilitates delivery of electric energy to devices, and sensing a condition that is adverse to the electromagnetic waves propagating along the surface of the wire.
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Method and apparatus that provides fault tolerance in a communication network

Paul Shala Henry, +5 more
TL;DR: In this article, a system for detecting a fault in a first wire of a power grid that affects a transmission or reception of electromagnetic waves that transport data and that propagate along a surface of the first wire is described.
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Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith

Paul Shala Henry, +5 more
TL;DR: In this article, a coupler couples the first electromagnetic wave to a single wire transmission medium having an outer surface, to forming a second electromagnetic wave that is guided to propagate along the outer surface of the single-wire transmission medium via at least one guided wave mode that includes an asymmetric or non-fundamental mode having a lower cutoff frequency.
References
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Patent

Microwave antenna system

Ching Chun Han, +1 more
TL;DR: In this paper, the authors proposed an array of closely clustered waveguide elements each of which converts respective linearly polarized signals to left-hand and right-hand circularly polarized signals and vice versa.
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Method and device for coupling cancellation of closely spaced antennas

Anders Derneryd, +1 more
TL;DR: In this article, the authors proposed a method for calculating a compensating scattering 2Nx2N matrix (Sc) for an antenna system according to the above, and also to a corresponding compensating network for a single antenna system.
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Radio frequency isolation card

Joseph R. Ippolito
TL;DR: In this paper, the authors used the signal summing operation to cancel the feedback signal and the leakage signal at the output port of the antenna, thereby improving the port-to-port isolation.
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Antenna decoupling arrangement

Sven H M Dodington
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Printed circuit array antenna

Argintaru Lazare, +1 more
TL;DR: A printed circuit array antenna as mentioned in this paper consists of at least one printed circuit formed by a substrate having radiating elements on a first face and an energy distribution tree on a second face.