Patents by Inventor Sampson Hu
Sampson Hu 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).
-
Patent number: 11539123Abstract: There is disclosed an antenna system comprising: i) first and second antennas, the second antenna being disposed laterally from the first along a longitudinal axis, and ii) an isolation structure disposed between the first and second antennas. The isolation structure comprises a first resonator element having a first arm with upper and lower ends, the first arm connected to ground at its lower end, and a lateral second arm connected to the upper end of the first arm. At least a portion of the first resonator element is disposed adjacent to a portion of the first antenna such that the first resonator element is strongly coupled to the first antenna.Type: GrantFiled: June 9, 2017Date of Patent: December 27, 2022Assignee: Novocomms LtdInventors: Sampson Hu, Qing Liu, Jinsong Song, Jiechen Chen
-
Patent number: 11239572Abstract: There are disclosed antenna arrays for portable electronic devices. In one aspect, the antenna array comprises at least two antennas, each antenna comprising at least two radiating elements; and at least two control networks each comprising a plurality of impedance matching circuits and RF switches, each antenna being connected to a respective control network. Each control network connects the radiating elements of its respective antenna to a single RF port. Each antenna element is connected to a respective first RF switch in its respective control network allowing selection between different ones of the plurality of impedance matching circuits. Each port is connected to a respective second RF switch in its respective control network allowing selection between different ones of the plurality of impedance matching circuits. The impedance matching circuits are connected between the first RF switches and the second RF switch in each control network.Type: GrantFiled: January 31, 2018Date of Patent: February 1, 2022Assignee: Smart Antenna Technologies Ltd.Inventors: Sampson Hu, Qing Liu, Liang Wan
-
Patent number: 11018433Abstract: There is disclosed an antenna arrangement for a portable electronic device. The antenna arrangement comprises a conductive ground plane having an edge and a substantially rectangular recess formed in the edge of the ground plane. The recess has a base, an open edge opposed to the base, and at least a first side extending from the base. A first conductor element extends across the open edge of the recess, a first end of the first conductor element being connected to the ground plane at the first side of the recess. The first conductor element leaves at least one gap at the edge of the recess, such that the first conductor element, the first side of the recess and the base of the recess together define a slot in the ground plane and the at least one gap defines at least one notch in the slot. A second conductor element is disposed within the recess and connected to or configured to couple with the ground plane.Type: GrantFiled: February 19, 2018Date of Patent: May 25, 2021Assignee: Smart Antenna Technologies Ltd.Inventors: Sampson Hu, Jinsong Song, Qing Liu, Liang Wan
-
Publication number: 20200203853Abstract: There are disclosed antenna arrays for portable electronic devices. In one aspect, the antenna array comprises at least two antennas, each antenna comprising at least two radiating elements; and at least two control networks each comprising a plurality of impedance matching circuits and RF switches, each antenna being connected to a respective control network. Each control network connects the radiating elements of its respective antenna to a single RF port. Each antenna element is connected to a respective first RF switch in its respective control network allowing selection between different ones of the plurality of impedance matching circuits. Each port is connected to a respective second RF switch in its respective control network allowing selection between different ones of the plurality of impedance matching circuits. The impedance matching circuits are connected between the first RF switches and the second RF switch in each control network.Type: ApplicationFiled: January 31, 2018Publication date: June 25, 2020Inventors: Sampson Hu, Qing Liu, Liang Wan
-
Publication number: 20200161769Abstract: There is disclosed an antenna arrangement for a portable electronic device. The antenna arrangement comprises a conductive ground plane having an edge and a substantially rectangular recess formed in the edge of the ground plane. The recess has a base, an open edge opposed to the base, and at least a first side extending from the base. A first conductor element extends across the open edge of the recess, a first end of the first conductor element being connected to the ground plane at the first side of the recess. The first conductor element leaves at least one gap at the edge of the recess, such that the first conductor element, the first side of the recess and the base of the recess together define a slot in the ground plane and the at least one gap defines at least one notch in the slot. A second conductor element is disposed within the recess and connected to or configured to couple with the ground plane.Type: ApplicationFiled: February 19, 2018Publication date: May 21, 2020Inventors: Sampson Hu, Jinsong Song, Qing Liu, Liang Wan
-
Patent number: 10581166Abstract: There is disclosed a multi-band reconfigurable antenna device having at least one radiating element. The radiating element is connected to a single port by way of at least first and second matching circuits arranged in parallel. A high pass filter is provided between the first matching circuit and the radiating element so as to allow passage of a first, higher frequency RF signal through the first matching circuit. A low pass filter is provided between the second matching circuit and the at least one radiating element so as to allow passage of a second, lower frequency RF signal through the second matching circuit. The high pass filter blocks passage of the second, lower frequency RF signal through the first matching circuit, and the low pass filter blocks passage of the first, higher frequency RF signal through the second matching circuit. The first and second matching circuits are adjustable independently of each other so as to allow the first and second RF signals to be tuned independently of each other.Type: GrantFiled: September 4, 2015Date of Patent: March 3, 2020Assignee: Smart Antenna Technologies Ltd.Inventor: Sampson Hu
-
Patent number: 10535921Abstract: There is disclosed a reconfigurable antenna device having a substrate incorporating a first groundplane, a two-arm antenna having first and second arms each having a proximal portion and a distal portion, a first unbalanced antenna located generally between the distal portions and adjacent to the proximal portions of the first and second arms, a second unbalanced antenna located generally adjacent to the first arm and a third unbalanced antenna located generally adjacent to the second arm. The antenna device may be configured with four or five feed points, and may drive from four up to ten signal ports.Type: GrantFiled: September 4, 2015Date of Patent: January 14, 2020Assignee: Smart Antenna Technologies Ltd.Inventor: Sampson Hu
-
Patent number: 10374289Abstract: There is disclosed a reconfigurable antenna device comprising a substrate having first and second opposed ends and first and second opposed side edges, the substrate incorporating a main groundplane. The antenna device further comprises a dipole antenna having first and second arms each having a proximal portion and a distal portion, the proximal portions extending substantially adjacent and parallel to the first end of the substrate and the distal portions respectively extending substantially adjacent and parallel to the first and second side edges of the substrate. Distal ends of the first and second arms are connected to the main groundplane or otherwise grounded. Additionally, there is provided a main chassis antenna having first and second arms extending substantially adjacent and parallel to the first end of the substrate. The main chassis antenna is configured for excitation by RF currents in the main groundplane.Type: GrantFiled: April 7, 2016Date of Patent: August 6, 2019Assignee: Smart Antenna Technologies Ltd.Inventors: Sampson Hu, Xiang Gao
-
Publication number: 20190214721Abstract: There is disclosed an antenna system comprising: i) first and second antennas, the second antenna being disposed laterally from the first along a longitudinal axis, and ii) an isolation structure disposed between the first and second antennas. The isolation structure comprises a first resonator element having a first arm with upper and lower ends, the first arm connected to ground at its lower end, and a lateral second arm connected to the upper end of the first arm. At least a portion of the first resonator element is disposed adjacent to a portion of the first antenna such that the first resonator element is strongly coupled to the first antenna.Type: ApplicationFiled: June 9, 2017Publication date: July 11, 2019Inventors: Sampson Hu, Qing Liu, Jinsong Song, Jiechen Chen
-
Publication number: 20180123567Abstract: There is disclosed a negative impedance converter for a matching circuit for matching an impedance of an antenna to an impedance of an RF source or load. The negative impedance converter comprises first and second transistors connected in a cross-over configuration. Each transistor has a source or emitter, a drain or collector and a gate or base, and each transistor further has a first biasing circuit connected to its gate or base. The first biasing circuit comprises a first DC biasing signal source and a first diode or a third transistor connected between the first DC biasing signal source and the gate or base. There is also disclosed a negative impedance converter for a matching circuit for matching an impedance of an antenna to an impedance of an RF source or load. The negative impedance converter comprises first and second transistors connected in a cross-over configuration, each transistor having a source or emitter, a drain or collector and a gate or base.Type: ApplicationFiled: March 24, 2016Publication date: May 3, 2018Inventors: Sampson Hu, Liang Wan
-
Publication number: 20180076505Abstract: There is disclosed a reconfigurable antenna device comprising a substrate having first and second opposed ends and first and second opposed side edges, the substrate incorporating a main groundplane. The antenna device further comprises a dipole antenna having first and second arms each having a proximal portion and a distal portion, the proximal portions extending substantially adjacent and parallel to the first end of the substrate and the distal portions respectively extending substantially adjacent and parallel to the first and second side edges of the substrate. Distal ends of the first and second arms are connected to the main groundplane or otherwise grounded. Additionally, there is provided a main chassis antenna having first and second arms extending substantially adjacent and parallel to the first end of the substrate. The main chassis antenna is configured for excitation by RF currents in the main groundplane.Type: ApplicationFiled: April 7, 2016Publication date: March 15, 2018Inventors: Sampson Hu, Xiang Gao
-
Publication number: 20180054185Abstract: There is disclosed a matching network for connecting an electrically small antenna to an RF source or load. The matching network includes a negative impedance converter, a pre-matching network for connecting the negative impedance converter to the antenna and a post-matching network for connecting the negative impedance converter to the RF source or load. The pre-matching network comprises a combination of capacitors and/or inductors to transform both a real part and an imaginary part of an impedance of the antenna. The negative impedance converter is configured to cancel the transformed imaginary part of the impedance of the antenna. The post-matching network comprises a combination of capacitors and/or inductors to transform a residual real part of the impedance of the antenna to match an impedance of the RF source or load.Type: ApplicationFiled: March 24, 2016Publication date: February 22, 2018Inventors: Sampson Hu, Liang Wan
-
Publication number: 20170264018Abstract: There is disclosed a multi-band reconfigurable antenna device having at least one radiating element. The radiating element is connected to a single port by way of at least first and second matching circuits arranged in parallel. A high pass filter is provided between the first matching circuit and the radiating element so as to allow passage of a first, higher frequency RF signal through the first matching circuit. A low pass filter is provided between the second matching circuit and the at least one radiating element so as to allow passage of a second, lower frequency RF signal through the second matching circuit. The high pass filter blocks passage of the second, lower frequency RF signal through the first matching circuit, and the low pass filter blocks passage of the first, higher frequency RF signal through the second matching circuit. The first and second matching circuits are adjustable independently of each other so as to allow the first and second RF signals to be tuned independently of each other.Type: ApplicationFiled: September 4, 2015Publication date: September 14, 2017Inventor: Sampson Hu
-
Publication number: 20170256843Abstract: There is disclosed a reconfigurable antenna device comprising a plurality of antennas disposed about a periphery of a substantially rectangular shape having top, bottom, left and right sides. The antenna device includes a first balanced antenna having first and second radiating arms each having a proximal portion and a distal portion, proximal portions extending along the top side in respectively opposed directions from a substantially central feed point, and the distal portions extending part way down the left and right sides. The antenna device further includes a first unbalanced antenna located generally between the distal portions and adjacent to the proximal portions of the first and second radiating arms.Type: ApplicationFiled: September 4, 2015Publication date: September 7, 2017Inventors: Sampson Hu, Zhengpeng Wang, Xiang Gao
-
Publication number: 20170256854Abstract: There is disclosed a reconfigurable antenna device having a substrate incorporating a first groundplane, a two-arm antenna having first and second arms each having a proximal portion and a distal portion, a first unbalanced antenna located generally between the distal portions and adjacent to the proximal portions of the first and second arms, a second unbalanced antenna located generally adjacent to the first arm and a third unbalanced antenna located generally adjacent to the second arm. The antenna device may be configured with four or five feed points, and may drive from four up to ten signal ports.Type: ApplicationFiled: September 4, 2015Publication date: September 7, 2017Applicants: Smart Antenna Technologies Ltd., Smart Antenna Technologies Ltd.Inventor: Sampson Hu
-
Publication number: 20170141468Abstract: The invention relates to a balanced antenna system comprising a radiator connected via a matching circuit to a balun. In certain embodiments, the radiator comprises a first radiating element and a second radiating element and the matching circuit comprises a first impedance-matching circuit connected to the first radiating element and a second impedance-matching circuit connected to the second radiating element. The first and second matching circuits may be identical and are connected through the balun to a single port. To minimise the component count, the design of the matching circuit and balun is co-optimised.Type: ApplicationFiled: December 1, 2016Publication date: May 18, 2017Inventors: Zhen Hua Sampson Hu, Peter Hall
-
Patent number: 9553361Abstract: The invention relates to a balanced antenna system comprising a radiator connected via a matching circuit to a balun. In certain embodiments, the radiator comprises a first radiating element and a second radiating element and the matching circuit comprises a first impedance-matching circuit connected to the first radiating element and a second impedance-matching circuit connected to the second radiating element. The first and second matching circuits may be identical and are connected through the balun to a single port. To minimize the component count, the design of the matching circuit and balun is co-optimized.Type: GrantFiled: November 11, 2011Date of Patent: January 24, 2017Assignee: SMART ANTENNA TECHNOLOGIES LTDInventors: Zhen Hua Sampson Hu, Peter Hall
-
Publication number: 20130307742Abstract: The invention relates to a balanced antenna system comprising a radiator connected via a matching circuit to a balun. In certain embodiments, the radiator comprises a first radiating element and a second radiating element and the matching circuit comprises a first impedance-matching circuit connected to the first radiating element and a second impedance-matching circuit connected to the second radiating element. The first and second matching circuits may be identical and are connected through the balun to a single port. To minimise the component count, the design of the matching circuit and balun is co-optimised.Type: ApplicationFiled: November 11, 2011Publication date: November 21, 2013Applicant: The University of BirminghamInventors: Zhen Hua Sampson Hu, Peter Hall