Anthony P Demarco

US Patent:

6463269, Oct 8, 2002

Filed:

Mar 31, 1997

Appl. No.:

08/831460

Inventors:

Anthony Thomas DeMarco - Duluth GA

Assignee:

BellSouth Corporation

International Classification:

H03F 368

US Classification:

455341, 455127, 330124 D

Abstract:

A product and system is disclosed for intelligently controlling the number of amplifier modules that are active in a linear amplification system. By exercising such control, the system can avoid using unnecessary power. The invention monitors the system and gathers information from signals associated with the system, particularly information concerning signal power. A control functionality evaluates the gathered information to decide how many modules are necessary to sufficiently operate the amplification system or to decide if it has been commanded to perform certain functions. Once this decision is made, the control functionality communicates control signals to the power amplification modules to activate the needed or desired number of modules and deactivate the unneeded or undesired number of modules. Likewise, the control functionality configures the splitter and the combiner according to the number of needed or desired amplifier modules. This gathering, evaluation, and control is conducted continuously.

US Patent:

60471999, Apr 4, 2000

Filed:

Aug 15, 1997

Appl. No.:

8/912190

Inventors:

Anthony T. DeMarco - Duluth GA

Assignee:

Bellsouth Intellectual Property Corporation - Wilmington DE

International Classification:

H04Q 730

US Classification:

455572

Abstract:

A system and method for transmitting cellular signals has linear power amplifiers mounted on a cellular tower within a tower circuit. The linear power amplifiers provide the primary amplification of the signals which are transmitted by the antennas on the tower. By moving the amplifiers from a base station to the tower circuit, the system and method can employ less-expensive and more-reliable amplifiers and need not employ high-cost low-loss feeder lines. The tower circuit also includes a modulator for transmitting status signals down to the base station. The base station includes a demodulator for receiving the status signals and a control circuit for placing a switching circuit in a desired one of a plurality of modes based on the status of the tower circuit. The switching circuit, in a first mode, passes radio signals from combiners to their respective feeder lines and thus to their respective amplifiers and antennas when all transmission paths are operational. If a fault occurs along one or more transmission path, the switching circuit combines the radio signals from the combiners associated with the faulty amplifiers with the radio signals associated with an operational antenna and directs the combined set of radio signals to the operational antenna.

US Patent:

20210266213, Aug 26, 2021

Filed:

May 6, 2021

Appl. No.:

17/313942

Inventors:

- Irvine CA, US
Igor Timofeev - Dallas TX, US
Leonid Matytsine - Irvine CA, US
Anthony DeMarco - Leadville CO, US

International Classification:

H04L 27/26
H01Q 1/22
H01Q 3/14
H01Q 3/24
H01Q 3/30
H01Q 19/06
H01Q 25/00
H01Q 1/24

Abstract:

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.

US Patent:

20200195481, Jun 18, 2020

Filed:

Feb 20, 2020

Appl. No.:

16/796841

Inventors:

- Irvine CA, US
Igor Timofeev - Dallas TX, US
Leonid Matytsine - Irvine CA, US
Anthony DeMarco - Leadville CO, US

International Classification:

H04L 27/26
H01Q 1/24
H01Q 25/00
H01Q 19/06
H01Q 3/30
H01Q 3/24
H01Q 3/14
H01Q 1/22

Abstract:

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.

US Patent:

20190173163, Jun 6, 2019

Filed:

Jan 31, 2019

Appl. No.:

16/264629

Inventors:

- Irvine CA, US
Igor Timofeev - Dallas TX, US
Leonid Matytsine - Irvine CA, US
Anthony DeMarco - Leadville CO, US

International Classification:

H01Q 1/24
H01Q 25/00
H01Q 19/06
H01Q 1/22
H01Q 3/24
H01Q 3/14
H01Q 3/30

Abstract:

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.

US Patent:

20190165455, May 30, 2019

Filed:

Jan 31, 2019

Appl. No.:

16/264652

Inventors:

- Irvine CA, US
Igor Timofeev - Dallas TX, US
Leonid Matytsine - Irvine CA, US
Anthony DeMarco - Leadville CO, US

International Classification:

H01Q 1/24
H01Q 3/24
H01Q 1/22
H01Q 3/14
H01Q 3/30
H01Q 25/00
H01Q 19/06

Abstract:

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.

US Patent:

20190027823, Jan 24, 2019

Filed:

Jan 10, 2018

Appl. No.:

15/867393

Inventors:

- Irvine CA, US
Igor Timofeev - Dallas TX, US
Leonid Matytsine - Irvine CA, US
Anthony DeMarco - Leadville CO, US

International Classification:

H01Q 1/52
H01Q 21/06
H01Q 19/06
H01Q 5/30
H01Q 21/00
H01Q 19/10
H01Q 3/36

Abstract:

This application proposes multi-beam antenna systems using spherical lens 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 a track around one or more spherical lenses and by placing lower band radiators between spherical lenses. By using secondary lenses for high band radiators, coupling between low band and high band radiators is reduced. Beam tilt range and side lobe suppression are improved through phase shifting and/or a rotational angle of radiators. A wide beam tilt range (0-40 degree) can be achieved via the proposed multi-beam antenna systems. Each beam can be independently tilted. Based on proposed single and multi-lens antenna solutions, cell coverage improvements and stadium tribune coverage optimization are also achieved, together with a reduction in interference.