Communications: directive radio wave systems and devices (e.g. – Directive – Including a steerable array
Patent
1997-08-21
1999-05-04
Hellner, Mark
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a steerable array
H01Q 322
Patent
active
059008377
ABSTRACT:
The present invention provides for a method and apparatus for compensation of diffraction of beam of an antenna system. In the preferred embodiment, the antenna system is a phased array antenna. The present invention does so by controlling the phase front. The phase front is controlled by distributing frequencies such that the value of the frequency for a given emitter is proportional to the distance of the emitter from the center of the antenna system. In one embodiment of the invention, the value of the frequency for a given emitter is linear, square or otherwise, to the distance of the emitter from the center of the antenna system. A phase front formed by the time spectrum is summed with a phase front created by diffraction divergence compensation. In one embodiment, the phase front is controlled by forming the radius of the time spectrum opposite to and with the same value as the radius of the phase front created by diffraction divergence compensation. In an additional embodiment, the radius of the phase front is controlled by forming the time spectrum opposite to and with a greater value than the radius of the phase front created by diffraction divergence compensation, such that the divergence of the wave energy is reduced. In an additional embodiment, the radius of the phase front is controlled by forming the time spectrum collinear to the radius of the phase front created by diffraction divergence compensation, such that the divergence of the wave energy is increased.
REFERENCES:
patent: 4032922 (1977-06-01), Provencher
patent: 4060850 (1977-11-01), Speiser
patent: 4216475 (1980-08-01), Johnson
patent: 4254417 (1981-03-01), Speiser
patent: 4270223 (1981-05-01), Marston
patent: 4321550 (1982-03-01), Evtuhov
patent: 4342949 (1982-08-01), Harte et al.
patent: 4595994 (1986-06-01), Verber et al.
patent: 4641259 (1987-02-01), Shan et al.
patent: 4646099 (1987-02-01), Apostolos
patent: 4656601 (1987-04-01), Merritt et al.
patent: 4779984 (1988-10-01), Cook
patent: 4806888 (1989-02-01), Salvage et al.
patent: 4959559 (1990-09-01), Ziolkowski
patent: 5063385 (1991-11-01), Caschera
patent: 5316003 (1994-05-01), Stouffer
patent: 5552705 (1996-09-01), Keller
patent: 5675550 (1997-10-01), Ekhaus
patent: B14959559 (1993-02-01), Ziolkowski
"Methods and Apparatus for the Compensation of the Diffraction of an Antenna System's Beam" (article is in the Russian language).
"Thermoacoustic Engines and Refrigerators," Swift; Physics Today; Jul. 1995; pp. 22-28.
"New Electromagnetic Directed Energy Pulses," Ziolkowski; SPIE vol. 873 Microwave and Particle Beam Sources and Propagation (1988); pp. 312-319.
"Discretized Beam Methods for Focused Radiation from Distributed Apertures," Felsen; SPIE vol. 873 Microwave and Particle Beam Sources and Propagation (1988); pp. 320-328.
"Ultrasonic Bonded Nonwovens," Lutzow; Nonwovens Industry, v24, n10, pp. 48-51; Oct. 1993.
"New Ultrasonic Method has Promise for Meats Industry," Hill; Mar. 29, 1994; Texas A&M Agriculture News Home Page.
"Improving Light Alloy Casting with Power Ultrasound," Mason; Metallurgia v61, n7, p. 224; Jul. 199 Copyright 1994 FMJ International Publications Ltd.
"Acoustics," Mintzer; pp. 26-31; and "Ultrasonics," Frost; pp. 3785-3789; Gale Encyclopedia of Scien vol. 6; 1996.
"Design Environment for Low-Amplitude ThermoAcoustic Engines, DeltaE, Version 3.0," Ward and Swift; pp. 1-134; Los Alamos National Laboratory; LA-CC-93-8; Feb. 1996; Revision Jul. 1, 1996.
"Applications of Ultrasonics in the Water Industry," Jul. 1995; Report FR/INV 0001.
GB-123: The Ultrasonic Business: What's It All About? Where are the Opportunities, Project Analyst Business Communications, Inc.; Norwalk, CT 06855.
"Diffraction Effects in Directed Radiation Beams," Hafixi and Sprangle; vol. 8, No. 5, May 1991, J. Opt. Soc. Am A; pp. 705-717.
"The Sound of Data," Fischetti; Technology Review v96, n5; pp. 17-18; Jul. 1993; Copyright Mass. Institute of Technology Alumni Association 1993.
Fourth Dimension Systems Corp.
Hellner Mark
Leedom Jr. Charles M.
Robinson Eric J.
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