Patents by Inventor Govind Rangaswamy Kadambi
Govind Rangaswamy Kadambi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9408242Abstract: The present disclosure set forth a method for a node to participate in an ad hoc network. The first node receives a first link information broadcasted omnidirectionally by a second node. The first link information indicates if the second node is communicating via a first directional link in a first polarization with a third node. The first node establishes a second directional link in a second polarization with the second node.Type: GrantFiled: February 24, 2011Date of Patent: August 2, 2016Assignee: M. S. RAMAIAH SCHOOL OF ADVANCED STUDIESInventors: Govind Rangaswamy Kadambi, Rinki Sharma, Shiva Kumar Ponnuraj
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Patent number: 9100044Abstract: A method and apparatus for direct digital synthesis (DDS) of signals using Taylor series expansion is provided. The DDS may include a modified phase-to-amplitude converter that includes read-only-memories (ROMs), registers and, a single size, such as a coarse, intermediate, and fine ROM corresponding to respective higher resolution phase angles. The outputs of the ROMs when combined can form a digital output signal in the form of a Taylor series of a sinusoid function.Type: GrantFiled: October 15, 2013Date of Patent: August 4, 2015Inventors: Dipayan Mazumdar, Govind Rangaswamy Kadambi
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Publication number: 20140043179Abstract: A method and apparatus for direct digital synthesis (DDS) of signals using Taylor series expansion is provided. The DDS may include a modified phase-to-amplitude converter that includes read-only-memories (ROMs), registers and, a single size, such as a coarse, intermediate, and fine ROM corresponding to respective higher resolution phase angles. The outputs of the ROMs when combined can form a digital output signal in the form of a Taylor series of a sinusoid function.Type: ApplicationFiled: October 15, 2013Publication date: February 13, 2014Applicant: M.S. RAMAIAH SCHOOL OF ADVANCED STUDIESInventors: Dipayan MAZUMDAR, Govind Rangaswamy KADAMBI
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Patent number: 8570203Abstract: A method and apparatus for direct digital synthesis (DDS) of signals using Taylor series expansion is provided. The DDS may include a modified phase-to-amplitude converter that includes read-only-memories (ROMs), registers and, a single adder. Values stored in the ROMs may produce one component of a sinusoid signal, and each of the ROMs may be of a different size, such as a coarse, intermediate, and fine ROM corresponding to respective higher resolution phase angles. The outputs of the ROMs when combined can form a digital output signal in the form of a Taylor series expansion of a sinusoid function.Type: GrantFiled: October 19, 2010Date of Patent: October 29, 2013Assignee: M.S. Ramaiah School of Advanced StudiesInventors: Dipayan Mazumdar, Govind Rangaswamy Kadambi
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Publication number: 20120223847Abstract: A method and apparatus for direct digital synthesis (DDS) of signals using Taylor series expansion is provided. The DDS may include a modified phase-to-amplitude converter that includes read-only-memories (ROMs), registers and, a single adder. Values stored in the ROMs may produce one component of a sinusoid signal, and each of the ROMs may be of a different size, such as a coarse, intermediate, and fine ROM corresponding to respective higher resolution phase angles. The outputs of the ROMs when combined can form a digital output signal in the form of a Taylor series expansion of a sinusoid function.Type: ApplicationFiled: October 19, 2010Publication date: September 6, 2012Applicant: M.S. RAMAIAH SCHOOL OF ADVANCED STUDIESInventors: Dipayan Mazumdar, Govind Rangaswamy Kadambi
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Publication number: 20120176937Abstract: The present disclosure set forth a method for a node to participate in an ad hoc network. The first node receives a first link information broadcasted omnidirectionally by a second node. The first link information indicates if the second node is communicating via a first directional link in a first polarization with a third node. The first node establishes a second directional link in a second polarization with the second node.Type: ApplicationFiled: February 24, 2011Publication date: July 12, 2012Applicant: M.S. RAMAIAH SCHOOL OF ADVANCED STUDIESInventors: Govind Rangaswamy Kadambi, Rinki Sharma, Shiva Kumar Ponnuraj
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Patent number: 7183982Abstract: Operating parameters of a planar antenna are controlled by providing a planar metal radiating element having an edge, by providing a slot within the radiating element, the slot having side walls, an open slot-end that lies on the edge of the radiating element, and a closed slot-end the lies within the radiating element, and by providing a thin, line-like, and metal segment, at least a portion of which is coplanar with the radiating element and that extends from the open slot-end to the closed slot-end without physically engaging the slot's side walls. The metal segment can be connected to the antenna's ground plane to thereby form a parasitic element, or the metal segment can be connected to the radiating element to thereby form an extension of the radiating element.Type: GrantFiled: October 10, 2003Date of Patent: February 27, 2007Assignee: Centurion Wireless Technologies, Inc.Inventors: Govind Rangaswamy Kadambi, Willis Raymond Hardy, Sripathi Yarasi, Theodore Samuel Hebron
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Patent number: 6956530Abstract: Printed circuit techniques and two-shot molding techniques are used to form a metal radiating element, a metal ground plane element, a metal antenna feed, a metal short-circuiting strip and metal capacitive loading plates within small antennas that are buried within transmit/receive radio-devices such a mobile cellular telephones. Balanced and unbalanced, single-feed, two and three band antennas are provided wherein the radiating element is laterally spaced from the ground plane element, to thereby provide an antenna having a very low profile or height, including antennas wherein the ground plane element and the radiating element are placed coplanar on the same surface of a PCB. A thin dielectric carriage on a PCB allows for the metal capacitive loading plates to be placed on the sidewalls of the dielectric carriage, to thereby provide reactive loading of a radiating element that is on the top surface of the dielectric carriage.Type: GrantFiled: December 9, 2002Date of Patent: October 18, 2005Assignee: Centurion Wireless Technologies, Inc.Inventors: Govind Rangaswamy Kadambi, Sripathi Yarasi, Theodore Samuel Hebron
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Patent number: 6856294Abstract: Printed circuit techniques and two-shot molding techniques are used to form a metal radiating element, a metal ground plane element, a metal antenna feed, a metal short-circuiting strip and metal capacitive loading plates within small antennas that are buried within transmit/receive radio-devices such a mobile cellular telephones. Balanced and unbalanced, single-feed, two and three band antennas are provided wherein the radiating element is laterally spaced from the ground plane element, to thereby provide an antenna having a very low profile or height, including antennas wherein the ground plane element and the radiating element are placed coplanar on the same surface of a PCB. A thin dielectric carriage on a PCB allows for the metal capacitive loading plates to be placed on the sidewalls of the dielectric carriage, to thereby provide reactive loading of a radiating element that is on the top surface of the dielectric carriage.Type: GrantFiled: January 5, 2004Date of Patent: February 15, 2005Assignee: Centurion Wireless Technologies, Inc.Inventors: Govind Rangaswamy Kadambi, Sripathi Yarasi, Theodore Samuel Hebron
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Patent number: 6831607Abstract: A unitary assembly provides two virtual planar inverted-F antennas (PIFAs) within a physical volume that is occupied by one of the PIFAs. The virtual two-antenna assembly includes a single RF feed, and provides multiple frequency response in the AMPS, PCS, GSM, DCS and GPS frequency bands. A composite radiating element is supported above a ground plane. A C-shaped slot divides the composite radiating element into an outer radiating element and an inner radiating element. Two metal stubs within a slot-discontinuity of the C-shaped slot physically and electrically connect the outer radiating element to the inner radiating element. An RF feed post connects to the outer radiating element, and both of the inner and outer radiating elements are shorted to the ground plane.Type: GrantFiled: January 28, 2003Date of Patent: December 14, 2004Assignee: Centurion Wireless Technologies, Inc.Inventors: Theodore Samuel Hebron, Govind Rangaswamy Kadambi, Sripathi Yarasi
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Publication number: 20040145521Abstract: A unitary assembly provides two virtual planar inverted-F antennas (PIFAs) within a physical volume that is occupied by one of the PIFAs. The virtual two-antenna assembly includes a single RF feed, and provides multiple frequency response in the AMPS, PCS, GSM, DCS and GPS frequency bands. A composite radiating element is supported above a ground plane. A C-shaped slot divides the composite radiating element into an outer radiating element and an inner radiating element. Two metal stubs within a slot-discontinuity of the C-shaped slot physically and electrically connect the outer radiating element to the inner radiating element. An RF feed post connects to the outer radiating element, and both of the inner and outer radiating elements are shorted to the ground plane.Type: ApplicationFiled: January 28, 2003Publication date: July 29, 2004Inventors: Theodore Samuel Hebron, Govind Rangaswamy Kadambi, Sripathi Yarasi
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Publication number: 20040140938Abstract: Printed circuit techniques and two-shot molding techniques are used to form a metal radiating element, a metal ground plane element, a metal antenna feed, a metal short-circuiting strip and metal capacitive loading plates within small antennas that are buried within transmit/receive radio-devices such a mobile cellular telephones. Balanced and unbalanced, single-feed, two and three band antennas are provided wherein the radiating element is laterally spaced from the ground plane element, to thereby provide an antenna having a very low profile or height, including antennas wherein the ground plane element and the radiating element are placed coplanar on the same surface of a PCB. A thin dielectric carriage on a PCB allows for the metal capacitive loading plates to be placed on the sidewalls of the dielectric carriage, to thereby provide reactive loading of a radiating element that is on the top surface of the dielectric carriage.Type: ApplicationFiled: January 5, 2004Publication date: July 22, 2004Inventors: Govind Rangaswamy Kadambi, Sripathi Yarasi, Theodore Samuel Hebron
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Publication number: 20040104851Abstract: Operating parameters of a planar antenna are controlled by providing a planar metal radiating element having an edge, by providing a slot within the radiating element, the slot having side walls, an open slot-end that lies on the edge of the radiating element, and a closed slot-end the lies within the radiating element, and by providing a thin, line-like, and metal segment, at least a portion of which is coplanar with the radiating element and that extends from the open slot-end to the closed slot-end without physically engaging the slot's side walls. The metal segment can be connected to the antenna's ground plane to thereby form a parasitic element, or the metal segment can be connected to the radiating element to thereby form an extension of the radiating element.Type: ApplicationFiled: October 10, 2003Publication date: June 3, 2004Applicant: CENTURION WIRELESS TECHNOLOGIES, INC.Inventors: Govind Rangaswamy Kadambi, Willis Raymond Hardy, Sripathi Yarasi, Theodore Samuel Hebron
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Patent number: 6741214Abstract: Single feed planar inverted-F antennas (PIFAs) are provided for three, four or five frequency bands of resonance in both cellular and non-cellular frequency bands. The PIFAs include a dielectric carriage having a metal radiating element located on a top surface thereof and sidewalls having a metal ground plane element located at the bottom of the sidewalls. The non-radiating edge of the radiating elements include a downward extending shorting strip that is connected to the ground plane element and a downward extending feed strip that is spaced above the ground plane element and is connected to a feed cable. The radiating element includes downward extending matching and loading plates whose free ends are spaced above the ground plane element, which provide impedance matching and reactive loading to the radiating elements.Type: GrantFiled: November 6, 2002Date of Patent: May 25, 2004Assignee: Centurion Wireless Technologies, Inc.Inventors: Govind Rangaswamy Kadambi, Theodore Samuel Hebron, Antonio Barron Meza, Sripathi Yarasi
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Publication number: 20040085244Abstract: Single feed planar inverted-F antennas (PIFAs) are provided for three, four or five frequency bands of resonance in both cellular and non-cellular frequency bands. The PIFAs include a dielectric carriage having a metal radiating element located on a top surface thereof and sidewalls having a metal ground plane element located at the bottom of the sidewalls. The non-radiating edge of the radiating elements include a downward extending shorting strip that is connected to the ground plane element and a downward extending feed strip that is spaced above the ground plane element and is connected to a feed cable. The radiating element includes downward extending matching and loading plates whose free ends are spaced above the ground plane element, which provide impedance matching and reactive loading to the radiating elements.Type: ApplicationFiled: November 6, 2002Publication date: May 6, 2004Inventors: Govind Rangaswamy Kadambi, Theodore Samuel Hebron, Antonio Barron Meza, Sripathi Yarasi
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Publication number: 20040056804Abstract: Printed circuit techniques and two-shot molding techniques are used to form a metal radiating element, a metal ground plane element, a metal antenna feed, a metal short-circuiting strip and metal capacitive loading plates within small antennas that are buried within transmit/receive radio-devices such a mobile cellular telephones. Balanced and unbalanced, single-feed, two and three band antennas are provided wherein the radiating element is laterally spaced from the ground plane element, to thereby provide an antenna having a very low profile or height, including antennas wherein the ground plane element and the radiating element are placed coplanar on the same surface of a PCB. A thin dielectric carriage on a PCB allows for the metal capacitive loading plates to be placed on the sidewalls of the dielectric carriage, to thereby provide reactive loading of a radiating element that is on the top surface of the dielectric carriage.Type: ApplicationFiled: December 9, 2002Publication date: March 25, 2004Inventors: Govind Rangaswamy Kadambi, Sripathi Yarasi, Theodore Samuel Hebron
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Patent number: 6670923Abstract: A three-band, two-antenna, assembly includes a planar inverted-F antenna (PIFA) having a radiating/receiving element that is spaced from and extends generally parallel to a ground plane element. The planar radiating/receiving element of an inverted-F antenna (IFA) is located in an open space that exists between the radiating/receiving element of the PIFA and the ground plane element. The radiating/receiving element of the IFA extends either perpendicular to, or parallel to, the radiating/receiving element of the PIFA. The radiating/receiving element of the PIFA includes one or more open slot configurations that operate to provide dual resonant frequencies for the IPFA (AMPS/PCS or GSM/DCS). The radiating/receiving element of the IFA operates in a non-cellular frequency band (ISM or GPS).Type: GrantFiled: July 24, 2002Date of Patent: December 30, 2003Assignee: Centurion Wireless Technologies, Inc.Inventors: Govind Rangaswamy Kadambi, Vladimir Stoiljkovic, Shanmuganathan Suganthan