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Patent

Multiple frequency reflector antenna with multiple feeds

Ahmet Dogan Ergene
TLDR
In this paper, a reflector antenna system with multiple feeds each operating in a separate frequency band is described, where the antenna system includes a main parabolic reflector and an ellipsoidal subreflector configured in a Gregorian arrangement.
Abstract: 
A reflector antenna system with multiple feeds each operating in a separate frequency band. The antenna system includes a main parabolic reflector and an ellipsoidal subreflector configured in a Gregorian arrangement. Mutual blockage between the multiple feeds is reduced by their orientation and arrangement. The system includes a transversely positioned feed and an axial feed located in the focal region of the main reflector. The transverse feed may be integral with the subreflector. The system also includes a third feed placed at the virtual focal point of the subreflector.

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Citations
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Patent

Power receptacle wireless access point devices for networked living and work spaces

Robert J. Pera, +2 more
TL;DR: In this paper, power receptacle wireless access point (AP) devices that may be used as part of a networked (smart) living and work space are described. But these devices are not suitable for outdoor environments.
Patent

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.
Patent

Remote distributed antenna system

Farhad Barzegar, +5 more
TL;DR: In this article, a distributed antenna system is provided that frequency shifts the output of one or more microcells to a 60 GHz or higher frequency range for transmission to a set of distributed antennas.
Patent

Method and apparatus for sensing a condition in a transmission medium of electromagnetic waves

Mitchell Harvey Fuchs, +1 more
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.
Patent

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.
References
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Patent

Composite multi-beam and shaped beam antenna system

Yeongming Hwang, +1 more
TL;DR: In this article, the two subreflectors are combined into a single subreflector assembly employing a metallic concave reflector covered by a layer or coating of frequency selective optical material which allows for propagation of radiation at one frequency to the metal reflector while reflecting radiation in the other frequency band from a surface of the coating.
Patent

Multiple frequency antenna feed

Frank Cipolla, +3 more
TL;DR: In this paper, a planar array of patch elements is disposed at the end of the coaxial waveguides so the energy in each band radiates from a common phase center.
Patent

Phased array antenna arrangement with filtering to reduce grating lobes

Corrado Dragone, +1 more
TL;DR: In this article, a method for reducing the grating lobes associated with phased array antenna arrangements was proposed, which may be employed with any phase array antenna arrangement, consisting of disposing a filtering means capable of blocking the grated lobes at any real focal point in the focal plane of the antenna arrangement.
Patent

Compact scanning beam antenna feed arrangement

Ta-Shing Chu
TL;DR: In this paper, a feed arrangement for compact scanning beam antennas is proposed, which comprises a linear phased array of small feed elements, which form an approximate line source that radiates a wedge-shaped cylindrical beam toward a subreflector, which is shaped to focus the beam to a point source which then produces a spherical wavefront.
Patent

Gregorian antenna with ring focus

A Sciambi
TL;DR: In this paper, a Gregorian antenna system has the usual main reflector, subreflector, and a first feed for illuminating the primary reflector from the virtual focus via the sub-reflector and a second feed for directly illuminating the main reflectors from a prime focus.