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公开(公告)号：US11127234B2
公开(公告)日：2021-09-21
申请号：US16598224
申请日：2019-10-10
Applicant: DENSO International America, Inc. , DENSO CORPORATION
Inventor： Raymond Michael Stitt , Warren Guthrie , Osman Ahmed , Yuki Tokunaga
IPC: G07C9/00 , B60R25/24 , H04B17/318 , H04B1/7073 , B60R25/20 , G01S13/84 , H01Q1/32 , H01Q25/04 , H04B7/06 , H04W4/40 , G07C9/28 , H01Q25/00 , H04B7/15 , H04W12/122 , H04W12/128 , G01S7/02 , G01S13/76
Abstract: A method of communicating with a portable access device includes iteratively performing an algorithm via an access module of a vehicle. The algorithm includes a series of operations including: selecting a frequency from multiple frequencies; selecting an antenna pair from multiple possible antenna pairs, where antennas of the possible antenna pairs include antennas with different polarized axes; transmitting a packet to the portable access device via the selected antenna pair; receiving a first RSSI and a response signal from the portable access device, the first RSSI corresponds to the transmission of the packet; and measuring a second RSSI of the response signal; based on the first RSSIs and the second RSSIs. A best one of the frequencies and a best antenna pair of the possible antenna pairs are selected. One or more additional packets are transmitted using the selected best frequency and the selected best antenna pair.
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公开(公告)号：US10991182B2
公开(公告)日：2021-04-27
申请号：US16598191
申请日：2019-10-10
Applicant: DENSO International America, Inc. , DENSO CORPORATION
Inventor： Warren Guthrie , Osman Ahmed , Raymond Michael Stitt
IPC: H01Q1/32 , G07C9/00 , B60R25/24 , H04B17/318 , H04B1/7073 , B60R25/20 , G01S13/84 , H01Q25/04 , H04B7/06 , H04W4/40 , G07C9/28 , H01Q25/00 , H04B7/15 , H04W12/122 , H04W12/128 , G01S7/02 , G01S13/76
Abstract: A multi-axis polarized RF antenna assembly includes a circular polarized antenna, a circular isolator, and a linear polarized antenna. The circular polarized antenna includes a conductive ring-shaped body having an inner hole. The circular isolator is connected to the conductive ring-shaped body. The linear polarized antenna is connected to the circular polarized antenna and the circular isolator and extending outward from the circular isolator. The linear polarized antenna includes a sleeve and a conductive element extending through the sleeve. The linear polarize antenna extends orthogonal to a radius of the circular polarized antenna.
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公开(公告)号：US20200264257A1
公开(公告)日：2020-08-20
申请号：US16795855
申请日：2020-02-20
Applicant: DENSO International America, Inc. , DENSO CORPORATION
Inventor： R. Michael Stitt , Warren Guthrie
Abstract: A system and method for determining an Angle of Arrival (AOA) for frequency modulated communications. The system may include first and second antennas spaced apart from each other by a distance, and configured to receive wireless communications in the form of a frequency modulated signal. The system may determine a phase difference between the received signals irrespective of the modulations in the signal, thereby facilitating determining an AOA.
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公开(公告)号：US11493588B2
公开(公告)日：2022-11-08
申请号：US16795861
申请日：2020-02-20
Applicant: DENSO International America, Inc. , DENSO CORPORATION
Inventor： R. Michael Stitt , Warren Guthrie
Abstract: A system and method for determining an Angle of Arrival (AOA) for frequency modulated communications. The system may include first and second antennas spaced apart from each other by a distance, and configured to receive wireless communications in the form of a modulated signal. The system may determine a phase difference between the received signals based on one or more samples of a dedicated portion of the received signals, where one or more aspects of the dedicated portion is variable.
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公开(公告)号：US20200264256A1
公开(公告)日：2020-08-20
申请号：US16795861
申请日：2020-02-20
Applicant: DENSO International America, Inc. , DENSO CORPORATION
Inventor： R. Michael Stitt , Warren Guthrie
IPC: G01S3/48 , G01S3/50 , G01S3/02 , G01S3/04 , H04L12/801
Abstract: A system and method for determining an Angle of Arrival (AOA) for frequency modulated communications. The system may include first and second antennas spaced apart from each other by a distance, and configured to receive wireless communications in the form of a modulated signal. The system may determine a phase difference between the received signals based on one or more samples of a dedicated portion of the received signals, where one or more aspects of the dedicated portion is variable.
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Patent Agency Ranking
公开(公告)号：US11353538B2
公开(公告)日：2022-06-07
申请号：US16445430
申请日：2019-06-19
Applicant: DENSO International America, Inc. , DENSO CORPORATION
Inventor： Warren Guthrie , John Videtich , Raymond Michael Stitt , Eric Emens
IPC: G01S3/48 , G01S3/04 , H01Q3/36 , H01Q11/08 , H01Q21/00 , B60R25/24 , G07C9/00 , H01Q21/29 , H04W88/02 , B60R25/20
Abstract: A system is disclosed and includes a plurality of antennas. Each antenna includes a plurality of conductive elements and is circularly polarized. The plurality of conductive elements is configured to receive radio frequency (RF) signals. A first end of each of the plurality of conductive elements is electrically coupled to a printed circuit board, which includes a plurality of coupler circuits and a switching circuit. The plurality of coupler circuits is configured to combine the RF signals and output a signal to the switching circuit based on the combined RF signals. The switching circuit is configured to selectively output one of the signals based on at least one control port of the switching circuit being selectively activated by a control signal. The system also includes a microcontroller configured to determine, based on at least one of the signals, an angle of arrival associated with the plurality of antennas.
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公开(公告)号：US11269044B2
公开(公告)日：2022-03-08
申请号：US16795855
申请日：2020-02-20
Applicant: DENSO International America, Inc. , DENSO CORPORATION
Inventor： R. Michael Stitt , Warren Guthrie
IPC: G01S3/48 , G01S3/50 , H04L12/801 , G01S3/04 , G01S3/02 , G01S3/46 , G01S3/64 , H03D7/16 , H04L47/11
Abstract: A system and method for determining an Angle of Arrival (AOA) for frequency modulated communications. The system may include first and second antennas spaced apart from each other by a distance, and configured to receive wireless communications in the form of a frequency modulated signal. The system may determine a phase difference between the received signals irrespective of the modulations in the signal, thereby facilitating determining an AOA.
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公开(公告)号：US11269043B2
公开(公告)日：2022-03-08
申请号：US16445385
申请日：2019-06-19
Applicant: DENSO International America, Inc. , DENSO CORPORATION
Inventor： Warren Guthrie , Raymond Michael Stitt , Feliks Chikhalenko , Shinji Watanabe , Jagadeesh Krishnamurthy
IPC: H01Q3/36 , G01S3/48 , G01S3/04 , H01Q11/08 , H01Q21/00 , B60R25/24 , G07C9/00 , H01Q21/29 , H04W88/02 , B60R25/20
Abstract: Apparatus and systems are disclosed and include a body having a plurality of slots. Each of the plurality of slots includes a first portion, a second portion, and a third portion. The first portion is located on a first surface of the body. The second portion is located on a second surface of the body and forms a helical shape. The third portion is located on a third surface of the body. The first surface and the second surface are non-parallel. The third surface and the second surface are non-parallel. The apparatus includes a plurality of antenna elements that are disposed in a respective one of the plurality of slots. The plurality of antenna elements is configured to receive radio frequency (RF) signals. The apparatus includes a ground plane that is coupled to a first end of each of the plurality of antenna elements.
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公开(公告)号：US11150317B2
公开(公告)日：2021-10-19
申请号：US16445468
申请日：2019-06-19
Applicant: DENSO International America, Inc. , DENSO CORPORATION
Inventor： Raymond Michael Stitt , John Videtich , Warren Guthrie , Karl Jager , Thomas Peterson
IPC: G01S3/48 , G01S3/04 , H01Q3/36 , H01Q11/08 , H01Q21/00 , B60R25/24 , G07C9/00 , H01Q21/29 , H04W88/02 , B60R25/20
Abstract: Methods and systems are disclosed and include receiving a signal via a first communication channel at a plurality of azimuth angles. The method includes determining a plurality of first communication channel phase angle differences between a pair of antennas. The method includes receiving a second signal via a second communication channel and at the plurality of azimuth angles. The method includes determining a plurality of second communication channel phase angle differences between the pair of antennas that each correspond to one of the plurality of azimuth angles. The method includes generating a first reference curve based on the plurality of first communication channel phase angle differences. The method includes generating a second reference curve based on the plurality of second communication channel phase angle differences. The method also includes generating a calibration curve that is based on an interpolation of the first reference curve and the second reference curve.
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公开(公告)号：US11223136B2
公开(公告)日：2022-01-11
申请号：US16871351
申请日：2020-05-11
Applicant: DENSO International America, Inc. , DENSO CORPORATION
Inventor： Osman Ahmed , Warren Guthrie , Raymond Michael Stitt
Abstract: A feed circuit for feeding an antenna includes: a first coupler including a first pair of opposing conductive elements; a second coupler including a second pair of opposing conductive elements; a third coupler including a third pair of opposing conductive elements; a delay line; first terminals configured to connect to the antenna; second terminals connected to a ground reference; and a feed terminal connected to the first coupler and configured to receive at least one of a transmit signal to be transmitted from the antenna or a combined received signal from the antenna. The first terminals are connected to the second coupler and the third coupler and configured to output a signal at different phases to conductive elements of the antenna. The second terminals are connected to the first coupler, the second coupler and the third coupler.
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