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1. WO2021061165 - PROXIMITY DETECTION USING CALCULATED VOLTAGE STANDING WAVE RATIO READINGS

Publication Number WO/2021/061165
Publication Date 01.04.2021
International Application No. PCT/US2019/053654
International Filing Date 27.09.2019
IPC
H01Q 1/24 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
1Details of, or arrangements associated with, antennas
12Supports; Mounting means
22by structural association with other equipment or articles
24with receiving set
G01S 7/02 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
7Details of systems according to groups G01S13/, G01S15/, G01S17/127
02of systems according to group G01S13/58
G01S 7/06 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
7Details of systems according to groups G01S13/, G01S15/, G01S17/127
02of systems according to group G01S13/58
04Display arrangements
06Cathode-ray tube displays
G01S 13/00 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
13Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
G01S 13/34 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
13Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
02Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
06Systems determining position data of a target
08Systems for measuring distance only
32using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
34using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal
G01S 13/42 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
13Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
02Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
06Systems determining position data of a target
42Simultaneous measurement of distance and other coordinates
CPC
G01S 11/02
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
11Systems for determining distance or velocity not using reflection or reradiation
02using radio waves
H01Q 1/242
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
1Details of, or arrangements associated with, antennas
12Supports; Mounting means
22by structural association with other equipment or articles
24with receiving set
241used in mobile communications, e.g. GSM
242specially adapted for hand-held use
H01Q 3/2605
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
3Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
26varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
2605Array of radiating elements provided with a feedback control over the element weights, e.g. adaptive arrays
H01Q 3/2611
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
3Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
26varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
2605Array of radiating elements provided with a feedback control over the element weights, e.g. adaptive arrays
2611Means for null steering; Adaptive interference nulling
H01Q 3/40
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
3Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
26varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
30varying the ; relative; phase ; between the radiating elements of an array
34by electrical means
40with phasing matrix
Applicants
  • GOOGLE LLC [US]/[US]
Inventors
  • WANG, Jibing
  • STAUFFER, Erik Richard
  • AKRAM, Aamir
Agents
  • NIPPER, Stephen M.
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PROXIMITY DETECTION USING CALCULATED VOLTAGE STANDING WAVE RATIO READINGS
(FR) DÉTECTION DE PROXIMITÉ UTILISANT DES LECTURES DE RAPPORT D'ONDE STATIONNAIRE DE TENSION CALCULÉ
Abstract
(EN)
The present disclosure describes methods, devices, systems, and procedures for detecting a proximity of an object (301) in a near-field region of an electromagnetic field of a transmitting antenna array (204; 304; 404) using a voltage standing wave ratio (VSWR). In aspects, a forward signal for transmission by the antenna elements (308) is generated, at least one VSWR detector (210; 310) coupled to the antenna array (204; 304; 404) measures a power of the forward signal, the forward signal is transmitted, the at least one VSWR detector (210; 310) measures a power of a reflected signal, and the VSWR detector (210; 310) calculates a VSWR. Detected changes in the calculated VSWR are then utilized to detect object (301) proximity in the near-field region. Beamforming weights may be applied to the forward signal and a machine-learned model can be utilized to detect object (301) proximity in the near-field region.
(FR)
La présente invention décrit des procédés, des dispositifs, des systèmes et des procédures pour détecter une proximité d'un objet (301) dans une région de champ proche d'un champ électromagnétique d'un réseau d'antennes d'émission (204 ; 304 ; 404) à l'aide d'un rapport d'onde stationnaire de tension (VSWR). Selon certains aspects, un signal vers l'avant pour transmission par les éléments d'antenne (308) est généré, au moins un détecteur de VSWR (210 ; 310) couplé au réseau d'antennes (204 ; 304 ; 404) mesure une puissance du signal vers l'avant, le signal vers l'avant est transmis, le ou les détecteurs de VSWR (210 ; 310) mesurent une puissance d'un signal réfléchi, et le détecteur de VSWR (210 ; 310) calcule un VSWR. Des changements détectés dans le VSWR calculé sont ensuite utilisés pour détecter la proximité de l'objet (301) dans la région de champ proche. Des pondérations de formation de faisceau peuvent être appliquées au signal vers l'avant et un modèle automatiquement appris peut être utilisé pour détecter la proximité de l'objet (301) dans la région de champ proche.
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