Patents by Inventor Edwin Lim
Edwin Lim 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: 11967764Abstract: Example embodiments relate to a substrate integrated waveguide (SIW) with dual circular polarizations. An example SIW may include a dielectric substrate and a first metallic layer coupled to a top surface of the dielectric substrate with a through-hole extending through the dielectric substrate and the first metallic layer. The SIW also includes a dielectric layer coupled to a top surface of the first metallic layer. A second metallic layer is coupled to a top surface of the dielectric layer. The second metallic layer includes a non-conductive opening, a plurality of feeds with a first end in the non-conductive opening and a second end including a single-ended termination, and an impedance transformer. The SIW also includes a third metallic layer coupled to a bottom of the dielectric substrate, and a set of metallic via-holes proximate the non-conductive opening and coupling the second metallic layer to the third metallic layer.Type: GrantFiled: October 22, 2021Date of Patent: April 23, 2024Assignee: Waymo LLCInventors: Edwin Lim, Marvin Weinstein
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Patent number: 11894595Abstract: Example embodiments relate to substrate integrated waveguide (SIW) transitions. An example SIW may include a dielectric substrate having a top surface and a bottom surface and a first metallic layer portion coupled to the top surface of the dielectric substrate that includes a single-ended termination, an impedance transformer, and a metallic rectangular patch located within an open portion in the first metallic layer portion such that the open portion forms a non-conductive loop around the metallic rectangular patch. The SIW also includes a second metallic layer portion coupled to the bottom surface of the dielectric substrate and metallic via-holes electrically coupling the first metallic layer to the second metallic layer. The SIW may be implemented in a radar unit to couple antennas to a printed circuit board (PCB). In some examples, the SIW may be implemented with only a non-conductive opening that lacks the metallic rectangular patch.Type: GrantFiled: November 29, 2022Date of Patent: February 6, 2024Assignee: Waymo LLCInventors: Edwin Lim, Tegan Argo, Marvin Weinstein
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Publication number: 20230261389Abstract: Example embodiments relate to low elevation side lobe antennas with fan-shaped beams. An example radar unit may include a radiating plate having a first side and a second side with an illuminator, a waveguide horn, a waveguide opening, and a radiating sleeve extending into the first side of the radiating plate. The waveguide opening is positioned on the first end of the first side and the radiating sleeve is positioned on the second end of the first side. The radar unit also includes a metallic cover coupled to the first side of the radiating plate such that the metallic cover and the radiating plate form waveguide structures.Type: ApplicationFiled: April 27, 2023Publication date: August 17, 2023Inventors: Edwin Lim, Timothy Campbell, Matthew Markel
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Patent number: 11726174Abstract: Example embodiments described herein involve techniques for removing transmit phase noise. A system may cause a printed circuit board (PCB) to supply a signal enabling the transmission line to couple the signal to the radar unit and the delay line to couple the signal to the quadrature coupler. The radar unit may use the signal to transmit a radar signal on a radio channel having a centered radio frequency while the quadrature coupler uses the signal to produce an output from the quadrature coupler. The system may estimate phase noise relative to the radio channel having the centered RF based on the output from the quadrature coupler, receive, from the radar unit, a radar reflection corresponding to the radar signal, and determine information representative of one or more objects in an environment based on the radar reflection and the phase noise.Type: GrantFiled: December 28, 2020Date of Patent: August 15, 2023Assignee: Waymo LLCInventors: Timothy Campbell, Edwin Lim
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Patent number: 11670864Abstract: Example embodiments relate to low elevation side lobe antennas with fan-shaped beams. An example radar unit may include a radiating plate having a first side and a second side with an illuminator, a waveguide horn, a waveguide opening, and a radiating sleeve extending into the first side of the radiating plate. The waveguide opening is positioned on the first end of the first side and the radiating sleeve is positioned on the second end of the first side. The radar unit also includes a metallic cover coupled to the first side of the radiating plate such that the metallic cover and the radiating plate form waveguide structures.Type: GrantFiled: December 29, 2020Date of Patent: June 6, 2023Assignee: Waymo LLCInventors: Edwin Lim, Timothy Campbell, Matthew Markel
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Publication number: 20230107707Abstract: Example embodiments relate to substrate integrated waveguide (SIW) transitions. An example SIW may include a dielectric substrate having a top surface and a bottom surface and a first metallic layer portion coupled to the top surface of the dielectric substrate that includes a single-ended termination, an impedance transformer, and a metallic rectangular patch located within an open portion in the first metallic layer portion such that the open portion forms a non-conductive loop around the metallic rectangular patch. The SIW also includes a second metallic layer portion coupled to the bottom surface of the dielectric substrate and metallic via-holes electrically coupling the first metallic layer to the second metallic layer. The SIW may be implemented in a radar unit to couple antennas to a printed circuit board (PCB). In some examples, the SIW may be implemented with only a non-conductive opening that lacks the metallic rectangular patch.Type: ApplicationFiled: November 29, 2022Publication date: April 6, 2023Inventors: Edwin Lim, Tegan Argo, Marvin Weinstein
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Patent number: 11539107Abstract: Example embodiments relate to substrate integrated waveguide (SIW) transitions. An example SIW may include a dielectric substrate having a top surface and a bottom surface and a first metallic layer portion coupled to the top surface of the dielectric substrate that includes a single-ended termination, an impedance transformer, and a metallic rectangular patch located within an open portion in the first metallic layer portion such that the open portion forms a non-conductive loop around the metallic rectangular patch. The SIW also includes a second metallic layer portion coupled to the bottom surface of the dielectric substrate and metallic via-holes electrically coupling the first metallic layer to the second metallic layer. The SIW may be implemented in a radar unit to couple antennas to a printed circuit board (PCB). In some examples, the SIW may be implemented with only a non-conductive opening that lacks the metallic rectangular patch.Type: GrantFiled: December 28, 2020Date of Patent: December 27, 2022Assignee: Waymo LLCInventors: Edwin Lim, Tegan Argo, Marvin Weinstein
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Patent number: 11482792Abstract: Example radar systems are presented herein. A radar system may include radiating elements configured to radiate electromagnetic energy and arranged symmetrically in a linear array. The radiating elements comprise a set of radiating doublets and a set of radiating singlets. The radar system also includes a waveguide configured to guide electromagnetic energy between each of the plurality of radiating elements and a waveguide feed. The waveguide feed is coupled to the second side of the waveguide at a center location between a first half of the plurality of radiating elements and a second half of the plurality of radiating elements. The waveguide feed is configured to transfer electromagnetic energy between the waveguide and a component external to the waveguides. The radar system may also include a power dividing network defined by the waveguide and configured to divide the electromagnetic energy transferred by the waveguide feed based on a taper profile.Type: GrantFiled: February 4, 2021Date of Patent: October 25, 2022Assignee: Waymo LLCInventors: Edwin Lim, Jamal Izadian
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Publication number: 20220209415Abstract: Example embodiments relate to low elevation side lobe antennas with fan-shaped beams. An example radar unit may include a radiating plate having a first side and a second side with an illuminator, a waveguide horn, a waveguide opening, and a radiating sleeve extending into the first side of the radiating plate. The waveguide opening is positioned on the first end of the first side and the radiating sleeve is positioned on the second end of the first side. The radar unit also includes a metallic cover coupled to the first side of the radiating plate such that the metallic cover and the radiating plate form waveguide structures.Type: ApplicationFiled: December 29, 2020Publication date: June 30, 2022Inventors: Edwin Lim, Timothy Campbell, Matthew Markel
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Publication number: 20220209385Abstract: Example embodiments relate to substrate integrated waveguide (SIW) transitions. An example SIW may include a dielectric substrate having a top surface and a bottom surface and a first metallic layer portion coupled to the top surface of the dielectric substrate that includes a single-ended termination, an impedance transformer, and a metallic rectangular patch located within an open portion in the first metallic layer portion such that the open portion forms a non-conductive loop around the metallic rectangular patch. The SIW also includes a second metallic layer portion coupled to the bottom surface of the dielectric substrate and metallic via-holes electrically coupling the first metallic layer to the second metallic layer. The SIW may be implemented in a radar unit to couple antennas to a printed circuit board (PCB). In some examples, the SIW may be implemented with only a non-conductive opening that lacks the metallic rectangular patch.Type: ApplicationFiled: December 28, 2020Publication date: June 30, 2022Inventors: Edwin Lim, Tegan Argo, Marvin Weinstein
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Patent number: 11309636Abstract: An example radar system includes a transmission array and a reception array, each aligned as a linear array. The radar system also includes a transmitter configured to cause transmission of radar signals having a center frequency by the transmission array. The radar system also includes a receiver configured to receive radar signals having the center frequency that are received by the reception array. The radar system also includes a processor configured to process received radar signals from the receiver, and adjust the center frequency from a first center frequency to a second center frequency. The adjusting of the center frequency from the first center frequency to the second center frequency causes the frequency-dependent transmission radiation pattern of the transmission array to tilt in a first direction and the frequency-dependent reception radiation pattern of the reception array to tilt in an opposite direction from the first direction.Type: GrantFiled: December 18, 2019Date of Patent: April 19, 2022Assignee: Waymo LLCInventors: Edwin Lim, Matt Markel
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Publication number: 20210194150Abstract: An example radar system includes a transmission array and a reception array, each aligned as a linear array. The radar system also includes a transmitter configured to cause transmission of radar signals having a center frequency by the transmission array. The radar system also includes a receiver configured to receive radar signals having the center frequency that are received by the reception array. The radar system also includes a processor configured to process received radar signals from the receiver, and adjust the center frequency from a first center frequency to a second center frequency. The adjusting of the center frequency from the first center frequency to the second center frequency causes the frequency-dependent transmission radiation pattern of the transmission array to tilt in a first direction and the frequency-dependent reception radiation pattern of the reception array to tilt in an opposite direction from the first direction.Type: ApplicationFiled: December 18, 2019Publication date: June 24, 2021Inventors: Edwin Lim, Matt Markel
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Publication number: 20210159607Abstract: Example radar systems are presented herein. A radar system may include radiating elements configured to radiate electromagnetic energy and arranged symmetrically in a linear array. The radiating elements comprise a set of radiating doublets and a set of radiating singlets. The radar system also includes a waveguide configured to guide electromagnetic energy between each of the plurality of radiating elements and a waveguide feed. The waveguide feed is coupled to the second side of the waveguide at a center location between a first half of the plurality of radiating elements and a second half of the plurality of radiating elements. The waveguide feed is configured to transfer electromagnetic energy between the waveguide and a component external to the waveguides. The radar system may also include a power dividing network defined by the waveguide and configured to divide the electromagnetic energy transferred by the waveguide feed based on a taper profile.Type: ApplicationFiled: February 4, 2021Publication date: May 27, 2021Inventors: Edwin Lim, Jamal Izadian
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Patent number: 10931030Abstract: Example radar systems are presented herein. A radar system may include radiating elements configured to radiate electromagnetic energy and arranged symmetrically in a linear array. The radiating elements comprise a set of radiating doublets and a set of radiating singlets. The radar system also includes waveguide configured to guide electromagnetic energy between each of the plurality of radiating elements and a waveguide feed. The waveguide feed is coupled to the second side of the waveguide at a center location between a first half of the plurality of radiating elements and a second half of the plurality of radiating elements. The waveguide feed is configured to transfer electromagnetic energy between the waveguide and a component external to the waveguides. The radar system may also include a power dividing network defined by the waveguide and configured to divide the electromagnetic energy transferred by the waveguide feed based on a taper profile.Type: GrantFiled: September 11, 2019Date of Patent: February 23, 2021Assignee: Waymo LLCInventors: Edwin Lim, Jamal Izadian
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Publication number: 20200203849Abstract: Example radar systems are presented herein. A radar system may include radiating elements configured to radiate electromagnetic energy and arranged symmetrically in a linear array. The radiating elements comprise a set of radiating doublets and a set of radiating singlets. The radar system also includes waveguide configured to guide electromagnetic energy between each of the plurality of radiating elements and a waveguide feed. The waveguide feed is coupled to the second side of the waveguide at a center location between a first half of the plurality of radiating elements and a second half of the plurality of radiating elements. The waveguide feed is configured to transfer electromagnetic energy between the waveguide and a component external to the waveguides. The radar system may also include a power dividing network defined by the waveguide and configured to divide the electromagnetic energy transferred by the waveguide feed based on a taper profile.Type: ApplicationFiled: September 11, 2019Publication date: June 25, 2020Inventors: Edwin Lim, Jamal Izadian
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Patent number: 7528726Abstract: This invention provides an array antenna for a radio frequency identification (RFID) system, the array antenna comprises a transmission line with a longitudinal span proximately equaling to a height of a space desired to be covered by the array antenna, the transmission line having a terminal coupled to a RFID reader, and a plurality of radiating elements disposed on the first transmission line along the longitudinal span, additionally, reflective materials used behind the array antenna to maximize the illumination in the desired space and absorptive materials installed surrounding the desired space, in order to minimize the illumination of the undesired space surrounding the desired space.Type: GrantFiled: May 24, 2007Date of Patent: May 5, 2009Assignee: YEON Technologies Co., Ltd.Inventors: Teh-Hong Lee, Walter D. Burnside, Robert J. Burkholder, Chan-Ping Edwin Lim
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Patent number: 7525487Abstract: This invention provides a shelf antenna system for radio frequency identification (RFID) applications, the shelf antenna system comprises a plurality of substantially horizontal shelves, and a distributed antenna having a single feed terminal and a plurality of radiating elements, the distributed antenna being mounted next to the plurality of substantially horizontal shelves, wherein the entire shelf space of the plurality of substantially horizontal shelves are covered by radiations from the distributed antenna.Type: GrantFiled: May 17, 2007Date of Patent: April 28, 2009Assignee: YEON Technologies Co., Ltd.Inventors: Walter D. Burnside, Robert J. Burkholder, Chan-Ping Edwin.Lim
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Publication number: 20080284654Abstract: This invention provides a shelf antenna system for radio frequency identification (RFID) applications, the shelf antenna system comprises a plurality of substantially horizontal shelves, and a distributed antenna having a single feed terminal and a plurality of radiating elements, the distributed antenna being mounted next to the plurality of substantially horizontal shelves, wherein the entire shelf space of the plurality of substantially horizontal shelves are covered by radiations from the distributed antenna.Type: ApplicationFiled: May 17, 2007Publication date: November 20, 2008Inventors: Walter D. Burnside, Robert J. Burkholder, Chan-Ping Edwin-Lim
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Publication number: 20070294981Abstract: A method and a device of constructing a side-opening cigarette package. The method comprises gathering cigarettes into a bundled charge. A flat shell (10) is propped open to facilitate insertion of the bundled cigarettes. The shell containing the cigarettes is rotated and placed in a desired orientation onto a blank. The blank is folded to form the side opening cigarette package.Type: ApplicationFiled: July 20, 2005Publication date: December 27, 2007Inventors: Edwin Lim, Eric Kuek, Zhong Yang, Kia Tan
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Publication number: 20070273529Abstract: This invention provides an array antenna for a radio frequency identification (RFID) system, the array antenna comprises a transmission line with a longitudinal span proximately equaling to a height of a space desired to be covered by the array antenna, the transmission line having a terminal coupled to a RFID reader, and a plurality of radiating elements disposed on the first transmission line along the longitudinal span, additionally, reflective materials used behind the array antenna to maximize the illumination in the desired space and absorptive materials installed surrounding the desired space, in order to minimize the illumination of the undesired space surrounding the desired space.Type: ApplicationFiled: May 24, 2007Publication date: November 29, 2007Inventors: Teh-Hong Lee, Walter D. Burnside, Robert J. Burkholder, Chan-Ping Edwin Lim