Dr. DeMarco graduated from the University of Iowa Carver College of Medicine in 1991. He works in Athens, GA and specializes in Ophthalmology. Dr. DeMarco is affiliated with Athens Regional Medical Center and St Marys Health Care System.
Dr. Demarco graduated from the University of Rochester School of Medicine and Dentistry in 1970. He works in Milford, MA and specializes in Pulmonary Disease and Pulmonary Critical Care Medicine. Dr. Demarco is affiliated with Milford Regional Medical Center.
Anthony Checchio & G T Dowd Ltd 9525 Frankford Ave, Philadelphia, PA 19114 2153339696 (phone), 2153338514 (fax)
Education:
Medical School Kansas City University of Medicine and Biosciences College of Osteopathic Medicine Graduated: 1989
Languages:
English
Description:
Dr. Demarco graduated from the Kansas City University of Medicine and Biosciences College of Osteopathic Medicine in 1989. He works in Philadelphia, PA and specializes in Anesthesiology. Dr. Demarco is affiliated with Holy Redeemer Hospital.
- Irvine CA, US Leonid Matytsine - Irvine CA, US Anthony DeMarco - Leadville CO, US
International Classification:
H01Q 15/02 H01Q 3/08
Abstract:
An antenna has multiple RF elements disposed about a lens in at least two tracks. The at least two tracks collectively subtend more than 360 about the lens, providing highly customizable, adaptable, and steerable wireless communication. An array of multiple lenses and tracks is also contemplated.
This application proposes multi-beam antenna systems using spherical lens are proposed, with high isolation between antenna ports and compatible to 2×2, 4×4, 8×8 MIMO transceivers. Several compact multi-band multi-beam solutions (with wideband operation, 40%+, in each band) are achieved by creating dual-band radiators movable on the track around spherical lens and by placing of lower band radiators between spherical lenses. By using of secondary lens for high band radiators, coupling between low band and high band radiators is reduced. Beam tilt range and side lobe suppression are improved by special selection of phase shift and rotational angle of radiators. Resultantly, a wide beam tilt range (0-40 degree) is realized in proposed multi-beam antenna systems. Each beam can be individually tilted. Based on proposed single- and multi-lens antenna solutions, cell coverage improvements and stadium tribune coverage optimization are also achieved, together with interference reduction.
Lens Arrays Configurations For Improved Signal Performance
- Irvine CA, US Leonid Matytsine - Irvine CA, US Anthony DeMarco - Leadville CO, US
International Classification:
H01Q 15/02 H01Q 21/00
Abstract:
A lens elements array comprises at least two lens elements aligned along an alignment axis. Each lens element includes a spherical lens and a feed element. The feed elements are tilted such that the RF signals generated by the feed elements have major axes form an angle (preferably between 5 and 30) other than a perpendicular angle with respect to the alignment axis. The combined RF signals produced collectively by these feed elements have amplitude that has minimal dips across the array. The feed elements that are farther away from the center of the array have higher levels of tilts than the feed elements that are closer to the center of the array.
This application proposes multi-beam antenna systems using spherical lens are proposed, with high isolation between antenna ports and compatible to 2×2, 4×4, 8×8 MIMO transceivers. Several compact multi-band multi-beam solutions (with wideband operation, 40%+, in each band) are achieved by creating dual-band radiators movable on the track around spherical lens and by placing of lower band radiators between spherical lenses. By using of secondary lens for high band radiators, coupling between low band and high band radiators is reduced. Beam tilt range and side lobe suppression are improved by special selection of phase shift and rotational angle of radiators. Resultantly, a wide beam tilt range (0-40 degree) is realized in proposed multi-beam antenna systems. Each beam can be individually tilted. Based on proposed single- and multi-lens antenna solutions, cell coverage improvements and stadium tribune coverage optimization are also achieved, together with interference reduction.
- Irvine CA, US Leonid Matytsine - Irvine CA, US Anthony DeMarco - Leadville CO, US
International Classification:
H01Q 15/02 H01Q 3/08
Abstract:
An antenna has multiple RF elements disposed about a lens in at least two tracks. The at least two tracks collectively subtend more than 360 about the lens, providing highly customizable, adaptable, and steerable wireless communication. An array of multiple lenses and tracks is also contemplated.
This application proposes multi-beam antenna systems using spherical lens are proposed, with high isolation between antenna ports and compatible to 2×2, 4×4, 8×8 MIMO transceivers. Several compact multi-band multi-beam solutions (with wideband operation, 40%+, in each band) are achieved by creating dual-band radiators movable on the track around spherical lens and by placing of lower band radiators between spherical lenses. By using of secondary lens for high band radiators, coupling between low band and high band radiators is reduced. Beam tilt range and side lobe suppression are improved by special selection of phase shift and rotational angle of radiators. Resultantly, a wide beam tilt range (0-40 degree) is realized in proposed multi-beam antenna systems. Each beam can be individually tilted. Based on proposed single- and multi-lens antenna solutions, cell coverage improvements and stadium tribune coverage optimization are also achieved, together with interference reduction.
This application proposes multi-beam antenna systems using spherical lens are proposed, with high isolation between antenna ports and compatible to 2×2, 4×4, 8×8 MIMO transceivers. Several compact multi-band multi-beam solutions (with wideband operation, 40%+, in each band) are achieved by creating dual-band radiators movable on the track around spherical lens and by placing of lower band radiators between spherical lenses. By using of secondary lens for high band radiators, coupling between low band and high band radiators is reduced. Beam tilt range and side lobe suppression are improved by special selection of phase shift and rotational angle of radiators. Resultantly, a wide beam tilt range (0-40 degree) is realized in proposed multi-beam antenna systems. Each beam can be individually tilted. Based on proposed single- and multi-lens antenna solutions, cell coverage improvements and stadium tribune coverage optimization are also achieved, together with interference reduction.
A radio frequency antenna uses an array of spherical lens and mechanically movable radio frequency (RF) elements along the surface of the spherical lens to provide cellular coverage for a narrow geographical area. The antenna includes at least two spherical lens, where each spherical lens has at least one associated element assembly. Each element assembly has a track that curves along the contour of the exterior surface of the spherical lens and along which a radio frequency (RF) element can move. The antenna also includes a phase shifter configured to adjust a phase of the signals produced by the RF elements. The antenna includes a control mechanism configured to enable a user to move the RF elements along their respective tracks, and automatically configure the phase shifter to modify a phase of the output signals from the elements based on the relative positions between the RF elements.
DePaul University - Sustainability Management/Marketing, Manchester College - Environmental Studies/ Business
Anthony Demarco
About:
I am a freelance writer and editor who has spent the past 10 years traveling the world covering luxury jewelry, watches and luxury lifestyles. I also write about food and travel. I work as a correspon...
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Writer, reporter, editor
Anthony Demarco
Anthony Demarco
Anthony Demarco
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Anthony DeMarco - 1999 Battle of Atlanta
Anthony DeMarco's soft style form at 99 BoA.
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1m 3s
The Psychological Effect of Epilepsy by Antho...
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Anthony DeMarco - 2000 US Open
Anthony DeMarco's soft style form at the 2000 US Open.
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1m 9s
Anthony Demarco - Teaching Wu Shu Wheel Arm S...
Anthony Demarco - Teaching Wu Shu Wheel Arm Slap. This video was video...
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1999 Battle of Atlanta Anthony DeMarco, Ope...
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1m 3s
Shining Star Anthony Demarco
The Ohio Lottery's Partners in Education program recognizes outstandin...