Patents by Inventor Lap Kun Yeung
Lap Kun Yeung 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: 20240125874Abstract: A magnetic field sensor which can achieve sensitivities competitive with modern sensors while simultaneously maintaining a small size, low power consumption, simplicity of design, and low cost. The magnetic field sensor utilizes nonlinear precession dynamics of subatomic spins to attain parametric amplification of a magnetic field. A preliminary experimental implementation of the proposed concept establishes its feasibility and can already demonstrate significant benefits over existing approaches to sensing.Type: ApplicationFiled: October 15, 2023Publication date: April 18, 2024Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Yuanxun Ethan Wang, Lap Kun Yeung, Kevin Luong
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Patent number: 11821965Abstract: A very low frequency (VLF) magnetic field sensor, using spins sourced from insulating ferrimagnetic materials or ferrites, which can achieve high sensitivities competitive with modern sensors while simultaneously maintaining a small size, low power consumption, simplicity of design, and low cost. The magnetic field sensor utilizes nonlinear resonant precession modulation (RPM) dynamics of subatomic spins to attain parametric amplification of a magnetic field.Type: GrantFiled: May 20, 2021Date of Patent: November 21, 2023Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Yuanxun Ethan Wang, Lap Kun Yeung, Kevin Luong
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Publication number: 20210364582Abstract: A magnetic field sensor which can achieve sensitivities competitive with modern sensors while simultaneously maintaining a small size, low power consumption, simplicity of design, and low cost. The magnetic field sensor utilizes nonlinear precession dynamics of subatomic spins to attain parametric amplification of a magnetic field. A preliminary experimental implementation of the proposed concept establishes its feasibility and can already demonstrate significant benefits over existing approaches to sensing.Type: ApplicationFiled: May 20, 2021Publication date: November 25, 2021Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Yuanxun Ethan Wang, Lap Kun Yeung, Kevin Luong
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Patent number: 9627751Abstract: Devices and methods for decoupling two antennas in a compact antenna array and antenna arrays comprising the devices are disclosed. According to an embodiment, the device comprises a first resonator coupled with a source, the source being connected with a first antenna of the two antennas; and a second resonator coupled with the first resonator and a load, the load being connected with a second antenna of the two antennas, wherein the first and second resonators are configured so that a first coupling between the source and the first resonator, a second coupling between the first and second resonators, and a third coupling between the second resonator and the load are satisfied with a constraint that an isolation coefficient in a whole network composed of a first two-port network consisting of the two antennas and a second two-port network consisting of the first and second resonators in parallel approach zero as well as reflection coefficients of each port of the whole network are minimized.Type: GrantFiled: November 30, 2012Date of Patent: April 18, 2017Assignee: THE CHINESE UNIVERSITY OF HONG KONGInventors: Ke-Li Wu, Luyu Zhao, Lap Kun Yeung
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Publication number: 20140152523Abstract: Devices and methods for decoupling two antennas in a compact antenna array and antenna arrays comprising the devices are disclosed. According to an embodiment, the device comprises a first resonator coupled with a source, the source being connected with a first antenna of the two antennas; and a second resonator coupled with the first resonator and a load, the load being connected with a second antenna of the two antennas, wherein the first and second resonators are configured so that a first coupling between the source and the first resonator, a second coupling between the first and second resonators, and a third coupling between the second resonator and the load are satisfied with a constraint that an isolation coefficient in a whole network composed of a first two-port network consisting of the two antennas and a second two-port network consisting of the first and second resonators in parallel approach zero as well as reflection coefficients of each port of the whole network are minimized.Type: ApplicationFiled: November 30, 2012Publication date: June 5, 2014Applicant: The Chinese University of Hong KongInventors: Ke-Li Wu, Luyu Zhao, Lap Kun Yeung
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Patent number: 7825746Abstract: An integrated balanced-filter which acts as a matching network, a balun and an extracted-pole bandpass filter is disclosed. The balanced-filter includes an unbalanced terminal, a first balanced terminal and a second balanced terminal, a first resonator connected to the unbalanced terminal, a second resonator connected to the first balanced terminal, and a third resonator connected to the second balanced terminal. The second resonator is positively coupled to the first resonator, and the third resonator is negatively coupled to the first resonator, which provides a balun function and a bandpass-filtering function. The balanced-filter further includes extracted-pole notch filters, which can introduce a transmission zero and implement matching network. The balanced-filter can be implemented in a multi-layered substrate, thereby reducing the size of the balanced-filter.Type: GrantFiled: June 1, 2006Date of Patent: November 2, 2010Assignee: The Chinese University of Hong KongInventors: Lap Kun Yeung, Ke Li Wu
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Patent number: 7772941Abstract: A balun comprises at least two asymmetric coplanar striplines, a first of the striplines coupled to a signal input, and a second of the striplines coupled to a signal output, the at least two asymmetric coplanar striplines configured in a Marchand architecture to receive an unbalanced signal and to output a balanced signal.Type: GrantFiled: June 12, 2008Date of Patent: August 10, 2010Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.Inventors: Lap-Kun Yeung, Angus C. K. Mak, Corbett R. Rowell
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Publication number: 20090309672Abstract: A balun comprises at least two asymmetric coplanar striplines, a first of the striplines coupled to a signal input, and a second of the striplines coupled to a signal output, the at least two asymmetric coplanar striplines configured in a Marchand architecture to receive an unbalanced signal and to output a balanced signal.Type: ApplicationFiled: June 12, 2008Publication date: December 17, 2009Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.Inventors: Lap-Kun Yeung, Angus C.K. Mak, Corbett R. Rowell
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Patent number: 7541888Abstract: A dual band balun filter that includes a first coupled-line section pair provided with a first terminal; a second coupled-line section pair configured to be connected to the first coupled-line section pair, a third coupled-line section pair, and a fourth coupled-line section pair, respectively, and the fourth coupled-line section pair is provided with a second terminal; the third coupled-line section pair is provided with a transmission line and is connected to a fifth coupled-line section pair that is provided with a third terminal; and each of the first to fifth coupled-line section pairs is formed with partial coupled stepped impedance resonators (SIRs).Type: GrantFiled: March 23, 2007Date of Patent: June 2, 2009Assignee: The Chinese University of Hong KongInventors: Ke-Li Wu, Lap Kun Yeung
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Publication number: 20080231389Abstract: A dual band balun filter, that includes a first coupled-line section pair provided with a first terminal; a second coupled-line section pair configured to be connected to the first coupled-line section pair, a third coupled-line section pair, and a fourth coupled-line section pair, respectively, and the fourth coupled-line section pair is provided with a second terminal; the third coupled-line section pair is provided with a transmission line and is connected to a fifth coupled-line section pair that is provided with a third terminal; and each of the first to fifth coupled-line section pairs is formed with partial coupled stepped impedance resonators (SIRs).Type: ApplicationFiled: March 23, 2007Publication date: September 25, 2008Applicant: THE CHINESE UNIVERSITY OF HONG KONGInventors: Ke-Li Wu, Lap Kun Yeung