Patent
Large element antenna array with grouped overlapped apertures
TLDR
In this paper, a spatial scanning system is proposed where each network is coupled to the common transmission line through a variable phase shifter so that the radiation patterns of the apertures combine to define a beacon of predetermined fine pointing direction.Abstract:
An antenna for transmitting or receiving, for limited fine scan or wide angle scan, or for producing multiple beams has a plurality antenna radiators or receivers (apertures) in a linear array, coupled to a smaller plurality of antenna networks so that many of the antenna apertures are coupled to two of the networks and the networks are all coupled to a common transmission line. For a spatial scanning system, each network is coupled to the common transmission line through a variable phase shifter so that the radiation patterns of the apertures combine to define a beacon of predetermined fine pointing direction that can be used to spatially sweep a sector by varying the phase shifters according to a predetermined schedule. Furthermore, by shifting the point of feed to the networks, the pointing direction is caused to switch in relatively large steps, from one sector to another sector.read more
Citations
More filters
Patent
Wireless power transmission system
TL;DR: The wireless power transmission is a system for providing wireless charging and/or primary power to electronic/electrical devices via microwave energy as mentioned in this paper, where the microwave energy is focused to a location by a power transmitter having one or more adaptively-phased microwave array emitters.
Patent
Electronically steered weather radar
TL;DR: In this article, an electronically steered weather radar system consisting of a plurality of transmit/receive modules, an antenna array configured to transmit a system beam in a direction determined by the phase of the RF signal from each transmitter/receiver module, and a system signal processor is configured to perform a first scan to detect meteorological formations.
Patent
Electronically agile dual beam antenna system
TL;DR: In this article, the authors proposed an improved antenna system that, in one embodiment, includes an antenna array comprised of a plurality of elements, each of which is capable of providing a signal, and a multi-beam beamformer for producing two spatially independent overlapping beams from the signals provided by two different subsets of the antenna array.
Patent
Phased array antenna employing linear scan for wide angle orbital arc coverage
N. Amitay,Michael J. Gans +1 more
TL;DR: In this paper, a linear array of feed elements is used to produce a fixed linear phase taper along the minor axis by all elements by linearly scanning the array along the major axis of the aperture of the array, a beam is scanned along an arc which can be made to correspond to an orbital arc segment around a celestial body.
Patent
Interlocking subarray configurations
TL;DR: In this article, a method of forming overlapping antenna subarrays includes forming one or more first-level sub-arrays by combing multiple elements, each of which has a phase center.
References
More filters
Patent
Phased power switching system for scanning antenna array
TL;DR: In this paper, a set of hybrid couplers are connected between the power amplifiers and the radiating elements with individual ones of the hybrid coupler being cross-connected for sharing the power of each amplifier among the radii.
Patent
Limited scan array antenna systems with sharp cutoff of element pattern
TL;DR: In this paper, the effective element pattern is modified by means of coupling circuits to closely conform to the ideal element pattern required for radiating the antenna beam within a selected angular region of space.
Patent
Lens fed antenna array system
TL;DR: In this article, a circular phased array (CPA) system is described which utilizes a lens feed to simplify the problem of commutating the RF distribution system through 360* of steering of the antenna beam.
Patent
Electronic scanned cylindrical-array antenna using network approach for reduced system complexity
TL;DR: In this paper, an electronic scan system with excitation arrangement for producing a directive radiation pattern from a circular or cylindrical array at a predetermined pointing angle is presented, where an RF input-output port feeds an equal amplitude distribution network providing as many outputs as there are elements of the array employed at any given time.