Patents by Inventor Adrian J. Tang
Adrian J. Tang 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: 20240132913Abstract: The disclosure relates to modified orthopoxvirus vectors, as well as methods of using the same for the treatment of various cancers. The disclosure provides modified orthopoxvirus vectors that exhibit various beneficial therapeutic activities, including enhanced oncolytic activity, spread of infection, immune evasion, tumor persistence, capacity for incorporation of exogenous DNA sequences and safety. The viruses we have discovered are also amenable to large scale manufacturing protocols.Type: ApplicationFiled: September 4, 2023Publication date: April 25, 2024Applicants: OTTAWA HOSPITAL RESEARCH INSTITUTE, TURNSTONE BIOLOGICS CORP.Inventors: John C. Bell, Fabrice Le Boeuf, Michael S. Huh, Matthew Y. Tang, Adrian Pelin, Brian Andrew Keller, Caroline J. Breitbach, Michael F. Burgess, Steven H. Bernstein
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Publication number: 20240014568Abstract: A metal-only flat metasurface antenna is described. The antenna includes a pillbox beamformer combined with a metasurface structure provided by an array of non-resonant subwavelength unit elements having opening sizes that are strictly smaller than half of the guided-mode wavelength. The pillbox beamformer includes bottom and top parallel plate waveguides (PWPs) forming respective bottom and top cavities for propagation of the guided-mode. Bottom, middle and top metal plates form the two PWPs. Arranged at one end of the bottom and top PWPs is a respective parabolic structure. An all-metal horn structure is centrally arranged at a second end of the bottom PWP opposite the parabolic structure. According to one aspect, the horn structure includes a single feed port arranged at a focal point of the parabolic structure. According to another aspect, the horn structure includes two feed ports arranged at an offset of the focal point.Type: ApplicationFiled: July 6, 2023Publication date: January 11, 2024Inventors: Nacer E. CHAHAT, Gaurangi GUPTA, John L. WOLFF, Adrian J. TANG, Goutam CHATTOPADHYAY
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Patent number: 11483027Abstract: We have demonstrated that the bandwidth millimeter wavelengths offer can be leveraged to deeply spread a low-data rate signal below the thermal floor of the environment (sub-thermal) by lowered transmit power combined with free space losses, while still being successfully received through a novel dispreading structure which does not rely on pre-detection to extract timing information. The demonstrated data link ensures that it cannot be detected beyond a designed range from the transmitter, while still providing reliable communication. A demonstration chipset of this sub-thermal concept was implemented in a 28 nm CMOS technology and when combined with an InP receiver was shown to decode signals up to 30 dB below the thermal noise floor by spreading a 9600 bps signal over 1 GHz of RF bandwidth from 93 to 94 GHz using a 64 bit spreading code. The transmitter for this chipset consumed 62 mW while the receiver consumed 281 mw.Type: GrantFiled: December 18, 2020Date of Patent: October 25, 2022Assignees: CALIFORNIA INSTITUTE OF TECHNOLOGY, THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Adrian J. Tang, Mau-Chung Frank Chang, Rulin Huang
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Publication number: 20210194535Abstract: We have demonstrated that the bandwidth millimeter wavelengths offer can be leveraged to deeply spread a low-data rate signal below the thermal floor of the environment (sub-thermal) by lowered transmit power combined with free space losses, while still being successfully received through a novel dispreading structure which does not rely on pre-detection to extract timing information. The demonstrated data link ensures that it cannot be detected beyond a designed range from the transmitter, while still providing reliable communication. A demonstration chipset of this sub-thermal concept was implemented in a 28 nm CMOS technology and when combined with an InP receiver was shown to decode signals up to 30 dB below the thermal noise floor by spreading a 9600 bps signal over 1 GHz of RF bandwidth from 93 to 94 GHz using a 64 bit spreading code. The transmitter for this chipset consumed 62 mW while the receiver consumed 281 mw.Type: ApplicationFiled: December 18, 2020Publication date: June 24, 2021Applicants: California Institute of Technology, The Regents of the University of CaliforniaInventors: Adrian J. Tang, Mau-Chung Frank Chang, Rulin Huang
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Patent number: 10505781Abstract: A backscatter modulator for providing low power wireless communications. The disclosed modulator provides phase control for discriminating backscatter from the antenna versus other objects. In addition, the disclosed backscatter modulator provides amplitude modulation so that the technique can provide a non-constant envelope which can provide an intentional imbalance to manipulate super-position to provide envelope control of the reflected signal, while still maintaining the frequency translation properties. The disclosed backscatter modulator thus allows compatibility with QAM, OFDM and other non-constant envelope modulation schemes to be backscattered, while still supporting the frequency translation behavior.Type: GrantFiled: November 9, 2018Date of Patent: December 10, 2019Assignees: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, CALIFORNIA INSTITUTE OF TECHNOLOGYInventors: Mau-Chung Frank Chang, Adrian J. Tang
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Patent number: 10355678Abstract: The disclosed embodiments relate to the design of a high-speed frequency doubler circuit. During operation, the circuit uses a transformer-based balun to convert a single-ended input signal into a differential signal, wherein the transformer-based balun includes a transformer with a primary coil, which receives the single-ended input signal, and a secondary coil, which produces the differential signal. The transformer also includes a central compensation capacitor coupled between a center tap of the secondary coil and ground, wherein the central compensation capacitor acts to suppress common-mode components in the differential signal. Next, the circuit uses a pseudo-differential amplifier to convert the differential signal into a single-ended output signal, which has double the frequency of the single-ended input signal.Type: GrantFiled: November 29, 2017Date of Patent: July 16, 2019Assignees: The Regents of the University of California, California Institute of TechnologyInventors: Yu Ye, Adrian J. Tang, Qun Gu, Brian J. Drouin
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Publication number: 20190173728Abstract: A backscatter modulator for providing low power wireless communications. The disclosed modulator provides phase control for discriminating backscatter from the antenna versus other objects. In addition, the disclosed backscatter modulator provides amplitude modulation so that the technique can provide a non-constant envelope which can provide an intentional imbalance to manipulate super-position to provide envelope control of the reflected signal, while still maintaining the frequency translation properties. The disclosed backscatter modulator thus allows compatibility with QAM, OFDM and other non-constant envelope modulation schemes to be backscattered, while still supporting the frequency translation behavior.Type: ApplicationFiled: November 9, 2018Publication date: June 6, 2019Applicants: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, CALIFORNIA INSTITUTE OF TECHNOLOGYInventors: Mau-Chung Frank Chang, Adrian J. Tang
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Patent number: 10305606Abstract: Communication between a wireless base-station and a microwave reflector link are enhanced by feeding back a portion of the transmitter signal, adjusted for phase and amplitude, to cancel ambient reflection blocker signals being received at the base-station. The microwave reflector link does not utilize a transmitter gain stage, but communicates data back to the base-station in response to modulating the reflections of its antenna (e.g., in gain and/or phase). The disclosure aids in the proper amplification and processing of reflection signals from the microwave reflector link, by canceling out the blocking signals which arise as background objects reflect transmitter signal energy back to the base-station.Type: GrantFiled: April 18, 2017Date of Patent: May 28, 2019Assignees: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, CALIFORNIA INSTITUTE OF TECHNOLOGYInventors: Mau-Chung Frank Chang, Yanghyo Kim, Adrian J. Tang
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Patent number: 10108300Abstract: Non-contact position and motion sensing is improved for oscillator frequency based sensors in response to adding a two phase calibration along with bootstrapping circuit. Calibration is performed across the multiple sensor channels, so that: (1) maximum sensor channel loading is determined, and (2) the amount of capacitive load required for each other channel to match this same maximum load is stored for application to that channel during non-contact sensing. Capacitive coupling between channels is nullified by a bootstrapping process, in which time-domain voltage on the active channel is replicated on the non-active channels during non-contact sensing, thus creating equal potentials across inter-channel couplings that effectively eliminate inter-channel capacitive loading.Type: GrantFiled: September 12, 2016Date of Patent: October 23, 2018Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Adrian J. Tang, Mau-Chung Frank Chang
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Publication number: 20180159516Abstract: The disclosed embodiments relate to the design of a high-speed frequency doubler circuit. During operation, the circuit uses a transformer-based balun to convert a single-ended input signal into a differential signal, wherein the transformer-based balun includes a transformer with a primary coil, which receives the single-ended input signal, and a secondary coil, which produces the differential signal. The transformer also includes a central compensation capacitor coupled between a center tap of the secondary coil and ground, wherein the central compensation capacitor acts to suppress common-mode components in the differential signal. Next, the circuit uses a pseudo-differential amplifier to convert the differential signal into a single-ended output signal, which has double the frequency of the single-ended input signal.Type: ApplicationFiled: November 29, 2017Publication date: June 7, 2018Applicant: The Regents of the University of CaliforniaInventors: Yu Ye, Adrian J. Tang, Qun Gu, Brian J. Drouin
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Publication number: 20170288787Abstract: Communication between a wireless base-station and a microwave reflector link are enhanced by feeding back a portion of the transmitter signal, adjusted for phase and amplitude, to cancel ambient reflection blocker signals being received at the base-station. The microwave reflector link does not utilize a transmitter gain stage, but communicates data back to the base-station in response to modulating the reflections of its antenna (e.g., in gain and/or phase). The disclosure aids in the proper amplification and processing of reflection signals from the microwave reflector link, by canceling out the blocking signals which arise as background objects reflect transmitter signal energy back to the base-station.Type: ApplicationFiled: April 18, 2017Publication date: October 5, 2017Applicants: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, CALIFORNIA INSTITUTE OF TECHNOLOGYInventors: Mau-Chung Frank Chang, Yanghyo Kim, Adrian J. Tang
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Patent number: 9621152Abstract: A switch comprising a plurality of inductors and a plurality of shunt transistors is described. Each inductor can be electrically coupled between adjacent shunt transistors to form a distributed switch structure. At least two inductors in the plurality of inductors can be inductively coupled with each other. The plurality of inductors can correspond to portions of a coupling inductor, wherein the coupling inductor can have an irregular octagonal shape.Type: GrantFiled: May 13, 2016Date of Patent: April 11, 2017Assignees: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, CALIFORNIA INSTITUTE OF TECHNOLOGYInventors: Ran Shu, Adrian J. Tang, Qun Gu, Brian J. Drouin
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Publication number: 20170060342Abstract: Non-contact position and motion sensing is improved for oscillator frequency based sensors in response to adding a two phase calibration along with bootstrapping circuit. Calibration is performed across the multiple sensor channels, so that: (1) maximum sensor channel loading is determined, and (2) the amount of capacitive load required for each other channel to match this same maximum load is stored for application to that channel during non-contact sensing. Capacitive coupling between channels is nullified by a bootstrapping process, in which time-domain voltage on the active channel is replicated on the non-active channels during non-contact sensing, thus creating equal potentials across inter-channel couplings that effectively eliminate inter-channel capacitive loading.Type: ApplicationFiled: September 12, 2016Publication date: March 2, 2017Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Adrian J. Tang, Mau-Chung Frank Chang
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Publication number: 20160336934Abstract: A switch comprising a plurality of inductors and a plurality of shunt transistors is described. Each inductor can be electrically coupled between adjacent shunt transistors to form a distributed switch structure. At least two inductors in the plurality of inductors can be inductively coupled with each other. The plurality of inductors can correspond to portions of a coupling inductor, wherein the coupling inductor can have an irregular octagonal shape.Type: ApplicationFiled: May 13, 2016Publication date: November 17, 2016Inventors: Ran Shu, Adrian J. Tang, Qun Gu, Brian J. Drouin
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Patent number: 9478842Abstract: A lens for interconnecting a metallic waveguide with a dielectric waveguide is provided. The lens may be coupled a metallic waveguide and a dielectric waveguide, and minimize a signal loss between the metallic waveguide and the dielectric waveguide.Type: GrantFiled: March 16, 2015Date of Patent: October 25, 2016Assignee: The United States of America as Represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Emmanuel Decrossas, Goutam Chattopadhyay, Nacer Chahat, Adrian J. Tang
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Patent number: 9341710Abstract: A sub-carrier successive approximation (SCSA) radar having a sufficiently high accuracy to capture 3D images of concealed objects. The invention is phase-based, and directly measures round trip time by estimating the phase delay of the carrier. One of its advantages is that the carrier does not need to sweep across a wide frequency range, thereby relaxing RF front-end bandwidth and linearity requirements. SCSA radar accuracy is limited only by the extent of system noise, allowing very high accuracy to be achieved with a sufficient integration period. The SCSA radar can be readily implemented in CMOS, as well as other device technologies, and fabricated within one or more small integrated circuits.Type: GrantFiled: July 18, 2014Date of Patent: May 17, 2016Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Mau-Chung Frank Chang, Adrian J. Tang
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Publication number: 20150288048Abstract: A data link, comprising a substrate; and an ink structure printed and/or marked on a substrate, wherein the structure directs an electric, magnetic, and/or electromagnetic wave between two locations.Type: ApplicationFiled: April 3, 2015Publication date: October 8, 2015Inventors: Adrian J. Tang, Goutam Chattopadhyay, Choonsup Lee, Emmanuel Decrossas, Nacer E. Chahat
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Publication number: 20150280321Abstract: A system for wirelessly communicating between a base station and a mobile device, including a reflector integrated with a mobile device, wherein the reflector reflects carrier radiation transmitted from a base station, to form a reflection of the carrier radiation, and input data from the mobile device modulates a reflection coefficient of the reflector, thereby modulating the reflection such that the reflection of the carrier radiation carries the input data to the base station.Type: ApplicationFiled: March 31, 2015Publication date: October 1, 2015Inventors: Adrian J. Tang, Nacer E. Chahat, Goutam Chattopadhyay, Choonsup Lee
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Publication number: 20150015432Abstract: A sub-carrier successive approximation (SCSA) radar having a sufficiently high accuracy to capture 3D images of concealed objects. The invention is phase-based, and directly measures round trip time by estimating the phase delay of the carrier. One of its advantages is that the carrier does not need to sweep across a wide frequency range, thereby relaxing RF front-end bandwidth and linearity requirements. SCSA radar accuracy is limited only by the extent of system noise, allowing very high accuracy to be achieved with a sufficient integration period. The SCSA radar can be readily implemented in CMOS, as well as other device technologies, and fabricated within one or more small integrated circuits.Type: ApplicationFiled: July 18, 2014Publication date: January 15, 2015Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Mau-Chung Frank Chang, Adrian J. Tang