Patents by Inventor Andrew Efanov
Andrew Efanov 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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Publication number: 20230072031Abstract: A wireless communication system may include an electronic device having an antenna element. The antenna element may convey radio-frequency signals greater than 10 GHz across a dielectric housing wall. A dielectric matching structure may be interposed between the antenna element and the dielectric housing wall. The wireless communication system may include external equipment having an antenna element communicatively coupled to the electronic device antenna element to convey firmware testing, debugging, restore, and/or other data via a near-field wireless communication link. The external equipment may be configured to receive the electronic device at an opening. A dielectric matching structure may be provided at the external equipment between the dielectric housing wall and the external equipment antenna element. The interior surface of the dielectric housing wall may have planar, convex, or concave portions.Type: ApplicationFiled: September 7, 2021Publication date: March 9, 2023Inventors: Yue Chen, Andrew A. Efanov, Avee Arvind, Larbi Azzoug, Thuy Nguyen, William J. Noellert
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Patent number: 9800965Abstract: A microphone porting and venting assembly (100) is formed of a remote support substrate (118) providing a (130) acoustically resistive element with dedicated venting cavities (132) along with an external baffle (220) providing acoustic channels (212, 214, 216) which further provide water drainage and external sound sampling points (222, 224, 226). The microphone porting and venting assembly (100) is well suited waterproof, noise cancelling microphone systems.Type: GrantFiled: October 19, 2015Date of Patent: October 24, 2017Assignee: MOTOROLA SOLUTIONS, INC.Inventors: Andrew P. Miehl, Patrick S. Claeys, Deborah A. Gruenhagen, Karl F. Mueller, David M. Yeager, Jorge L. Garcia, Andrew A. Efanov
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Patent number: 9653813Abstract: An electronic device (100) includes an antenna system (150) having two antennas (110, 120). A first antenna (110) has a first antenna element (111) positioned near a first corner (191) of a planar, rectangular ground plane (165) and a second antenna element (115) positioned near a second corner of the ground plane that is diagonally across from the first corner. A second antenna (120) has a third antenna element (121) positioned near a third corner (193) of the ground plane that is adjacent to the first corner and a fourth antenna element (125) positioned near a fourth corner (195) of the ground plane that is diagonally across from the third corner. At low-band frequencies, the antenna elements (111, 115) of the first antenna (110) are driven out-of-phase relative to each other. Similarly, at low-band frequencies, the antenna elements (121, 125) of the second antenna (120) are driven out-of-phase relative to each other.Type: GrantFiled: May 13, 2011Date of Patent: May 16, 2017Assignee: Google Technology Holdings LLCInventors: Hugh K. Smith, Eric L. Krenz, Karan J. Jumani, Andrew A. Efanov
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Publication number: 20170111720Abstract: A microphone porting and venting assembly (100) is formed of a remote support substrate (118) providing a (130) acoustically resistive element with dedicated venting cavities (132) along with an external baffle (220) providing acoustic channels (212, 214, 216) which further provide water drainage and external sound sampling points (222, 224, 226). The microphone porting and venting assembly (100) is well suited waterproof, noise cancelling microphone systems.Type: ApplicationFiled: October 19, 2015Publication date: April 20, 2017Inventors: Andrew P. Miehl, Patrick S. Claeys, Deborah A. Gruenhagen, Karl F. Mueller, David M. Yeager, Jorge L. Garcia, Andrew A. Efanov
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Patent number: 9276321Abstract: An electronic device (100) includes an antenna system (150) having two antennas (110, 120). A first antenna (110) has a first antenna element (111) positioned outside a first corner (191) of a planar, rectangular ground plane (165) and a second antenna element (115) positioned outside a second corner of the ground plane that is diagonally across from the first corner. A second antenna (120) has a third antenna element (121) positioned near a third corner (193) of the ground plane that is adjacent to the first corner and a fourth antenna element (125) positioned near a fourth corner (195) of the ground plane that is diagonally across from the third corner. At low-band frequencies, the antenna elements (111, 115) of the first antenna (110) are driven out-of-phase relative to each other. Similarly, at low-band frequencies, the antenna elements (121, 125) of the second antenna (120) are driven out-of-phase relative to each other.Type: GrantFiled: September 14, 2012Date of Patent: March 1, 2016Assignee: Google Technology Holdings LLCInventors: Hugh K. Smith, Eric L. Krenz, Karan J. Jumani, Andrew A. Efanov
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Publication number: 20130009842Abstract: An electronic device (100) includes an antenna system (150) having two antennas (110, 120). A first antenna (110) has a first antenna element (111) positioned outside a first corner (191) of a planar, rectangular ground plane (165) and a second antenna element (115) positioned outside a second corner of the ground plane that is diagonally across from the first corner. A second antenna (120) has a third antenna element (121) positioned near a third corner (193) of the ground plane that is adjacent to the first corner and a fourth antenna element (125) positioned near a fourth corner (195) of the ground plane that is diagonally across from the third corner. At low-band frequencies, the antenna elements (111, 115) of the first antenna (110) are driven out-of-phase relative to each other. Similarly, at low-band frequencies, the antenna elements (121, 125) of the second antenna (120) are driven out-of-phase relative to each other.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Applicant: Motorola Mobility LLCInventors: Hugh K. Smith, Eric L. Krenz, Karan J. Jumani, Andrew A. Efanov
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Publication number: 20120287011Abstract: An electronic device (100) includes an antenna system (150) having two antennas (110, 120). A first antenna (110) has a first antenna element (111) positioned near a first corner (191) of a planar, rectangular ground plane (165) and a second antenna element (115) positioned near a second corner of the ground plane that is diagonally across from the first corner. A second antenna (120) has a third antenna element (121) positioned near a third corner (193) of the ground plane that is adjacent to the first corner and a fourth antenna element (125) positioned near a fourth corner (195) of the ground plane that is diagonally across from the third corner. At low-band frequencies, the antenna elements (111, 115) of the first antenna (110) are driven out-of-phase relative to each other. Similarly, at low-band frequencies, the antenna elements (121, 125) of the second antenna (120) are driven out-of-phase relative to each other.Type: ApplicationFiled: May 13, 2011Publication date: November 15, 2012Applicant: MOTOROLA MOBILITY, INC.Inventors: Hugh K. Smith, Eric L. Krenz, Karan J. Jumani, Andrew A. Efanov
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Patent number: 7292195Abstract: An energy density diversity antenna (EDA) has a least a pair of antenna elements, whose feeding points are connected to outputs of a hybrid coupler configured such that a sum and a difference signal may exist at the feed points of the antenna elements. First reactive elements are respectively inserted in the antenna elements proximal the respective feed points. The antenna elements are joined at a point distal from the feed points by a second reactive element, and a third reactive element is coupled between feed lines coupled to the feed points at a location between the feed points and the outputs of the hybrid coupler.Type: GrantFiled: July 26, 2005Date of Patent: November 6, 2007Assignee: Motorola, Inc.Inventors: James P. Phillips, Andrew A. Efanov, Kristen M. Leininger
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Publication number: 20070024514Abstract: An energy density diversity antenna (EDA) has a least a pair of antenna elements, whose feeding points are connected to outputs of a hybrid coupler configured such that a sum and a difference signal may exist at the feed points of the antenna elements. First reactive elements are respectively inserted in the antenna elements proximal the respective feed points. The antenna elements are joined at a point distal from the feed points by a second reactive element, and a third reactive element is coupled between feed lines coupled to the feed points at a location between the feed points and the outputs of the hybrid coupler.Type: ApplicationFiled: July 26, 2005Publication date: February 1, 2007Inventors: James Phillips, Andrew Efanov, Kristen Leininger
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Patent number: 6657595Abstract: An adaptive antenna system having a counterpoise conductor contained within a housing of a communication device and located distally from such surfaces of the housing that can be held by or placed in proximity to a user or external objects which detune the counterpoise. A tuning circuit is coupled between the counterpoise conductor and a ground. The tuning circuit is operable to adapt the resonant frequency of the counterpoise conductor to divert operational RF currents away from the ground located in proximity the user or external objects and onto the counterpoise conductor.Type: GrantFiled: May 9, 2002Date of Patent: December 2, 2003Assignee: Motorola, Inc.Inventors: James P. Phillips, Eric L. Krenz, Andrew A. Efanov, Rachid M. Alameh, Roger L. Scheer
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Publication number: 20030210203Abstract: An adaptive antenna system having a counterpoise conductor contained within a housing of a communication device and located distally from such surfaces of the housing that can be held by or placed in proximity to a user or external objects which detune the counterpoise. A tuning circuit is coupled between the counterpoise conductor and a ground. The tuning circuit is operable to adapt the resonant frequency of the counterpoise conductor to divert operational RF currents away from the ground located in proximity the user or external objects and onto the counterpoise conductor.Type: ApplicationFiled: May 9, 2002Publication date: November 13, 2003Inventors: James P. Phillips, Eric L. Krenz, Andrew A. Efanov, Rachid M. Alameh, Roger L. Scheer
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Patent number: 6600450Abstract: A balanced antenna system for a communication device includes a balanced transmission line electromagnetically coupled to a transceiver of the device. A symmetrical dipole antenna element is operable at a first frequency driven by the balanced transmission line. A symmetrical loop antenna shares portions of the dipole antenna element and is operable at a second frequency driven by the transmission line. Preferably, the antenna system is disposed within a flip portion of the device housing.Type: GrantFiled: March 5, 2002Date of Patent: July 29, 2003Assignee: Motorola, Inc.Inventors: Andrew A. Efanov, James P. Phillips
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Patent number: 6421016Abstract: An improved antenna system to channel counterpoise currents for an unbalanced antenna such as a helical monopole. A first conductor, or ground resonator, is coupled to a ground connection near the antenna and is located distally from a user to reduce electromagnetic exposure. The first conductor presents a low impedance path at an operating frequency of the antenna such that RF currents are attracted onto the first conductor. A second conductor, such as a printed circuit board or user interface circuitry, is also coupled to the ground connection of the first conductor. The second conductor presents a high impedance path at the operating frequency of the antenna such that RF currents are diverted away from the second conductor which is held closer to a user than the first conductor.Type: GrantFiled: October 23, 2000Date of Patent: July 16, 2002Assignee: Motorola, Inc.Inventors: James P. Phillips, Eric L. Krenz, Andrew A. Efanov, Narendra Pulimi
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Patent number: 6348897Abstract: A multi-function antenna system for a radio communication device includes a housing that encloses a radio frequency transceiver of the radio communication device. A mounting base is coupled to the housing and has a first set of electrical contacts coupled to the transceiver. An antenna element is coupled by a hinge to the mounting base and has a second set of electrical contacts. Different portions of the first and second set of contacts are connectable as a function of the relative positions of the mounting base and the antenna element so as to provide different antenna functions.Type: GrantFiled: February 16, 2001Date of Patent: February 19, 2002Assignee: Motorola, Inc.Inventors: Rachid M. Alameh, Eric L. Krenz, Thomas E. Gitzinger, Jr., Christopher S. Gremo, Andrew A. Efanov, Ji Chen