Patent
Antenna system for ultra-wideband radar applications
Reads0
Chats0
TLDR
In this paper, the forward radiation leakage is eliminated and the backward electromagnetic radiation leakage, which is detrimental to antenna performance, is eliminated, and thereby enhancing the forward radii performance of the antenna system.Abstract:
Antenna systems suitable for ultra-wideband radar applications, e.g. ground penetrating radar, through-wall radar systems, are disclosed in which backward electromagnetic radiation leakage, which is detrimental to antenna performance, is eliminated, and thereby enhancing the forward radiation performance of the antenna system. This necessarily results in insignificant electromagnetic interference to proximate antenna systems. Accordingly, an antenna array may be provided in which multiple antenna systems may be juxtaposed to one another even without a gap between adjacent antenna systems.read more
Citations
More filters
Patent
Method and apparatus for coupling an antenna to a device
Paul Shala Henry,Donald J. Barnickel,Farhad Barzegar,Robert Bennett,Irwin Gerszberg,Thomas M. Willis +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,Donald J. Barnickel,George Blandino,Irwin Gerszberg,Paul Shala Henry,Thomas M. Willis +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
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,Robert Bennett,Irwin Gerszberg,Farhad Barzegar,Donald J. Barnickel,Thomas M. Willis +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.
Patent
Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith
Paul Shala Henry,Robert Bennett,Irwin Gerszberg,Farhad Barzegar,Donald J. Barnickel,Thomas M. Willis +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
More filters
Patent
Satellite reception antenna system
TL;DR: In this article, a single reflection mirror was used for the reception from two kinds of satellites by placing a primary radiator used for higher frequency waves among radio waves from the two types of the satellites to a focus of the reflection mirror and placing other primary radiator to a deviation point.
Patent
Method for controlling mixed pressure turbine and controller therefor
TL;DR: In this article, the authors proposed a method to maintain the high efficiency of a mixed pressure turbine as well as to enlarge an operation range by detecting each pressure at top and bottom of an extraction stage in an extraction system, and controlling load and temperature in the extraction end on the basis of each detection signal.
Patent
Obstacle detector and detecting method in underground propelling work
TL;DR: In this paper, a fixed antenna is fixed to a fixed seat with the fixed seat inclining against the axis of the forward end part 66 of a flexible propelling body, which is rotary driven round the axis to advance straight or not driven rotary but driven to push in.
Patent
Antenna for pulse radar
Ishikawa Hisashi,Ueno Keiichi +1 more
TL;DR: In this paper, a triangular dipole antenna is used to obtain a pulse radar antenna that does not cause a pseudo echo by short circuiting both ends of the antenna by means of a dielectric of inverse concaved type coated with a substance such as graphite.
Patent
Antenna for searching underground object
TL;DR: In this article, the authors proposed to reduce the reflection of an electromagnetic wave pulse based on the difference of a dielectric constant, in moving closely an antenna on the ground surface, by covering the antenna with a Dielectric member having the same dielectoric constant as that of a medium around an underground object to be sought.
Related Papers (5)
The scope of application of a reciprocity principle in the theory of antennas at radiation and reception of ultra-wideband signals
A.V. Zaitsev,I.Ya. Immoreev +1 more