# US 10,871,563 B2 · Antenna, vehicle radar, and vehicle equipped with same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,871,563 B2 - Document ID: US10871563B2 - Status: Granted - Kind: B2 - Application number: 15/747,363 - Filed: 2016-07-22 - Published: 2018-08-02 - Granted: 2020-12-22 - Earliest claimed: 2015-07-24 - Assignees: LG Electronics Inc.; Seoul National University R&Db Foundation - Applicants: LG Electronics Inc.; Seoul National University R&Db Foundation - Inventors: Pyonho Hong; Byeongrim Jo; Juhnho Park; Doohee Lee; Jongseop Koo; Sangwook Nam - Web page: https://patentgrep.com/patent/US10871563B2 ## CPC - G01S 13/931: of land vehicles - G01S 7/03: Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver - G01S 13/867: {Combination of radar systems with cameras} - H01Q 1/32: Adaptation for use in or on road or rail vehicles - H01Q 1/38: formed by a conductive layer on an insulating support {(patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142)} - H01Q 7/00: Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop - H01Q 9/04: Resonant antennas - H01Q 9/0407: {Substantially flat resonant element parallel to ground plane, e.g. patch antenna (dipole H01Q9/285; monopole H01Q9/40)} - H01Q 21/24: Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction {(circularly polarised patch antennas H01Q9/0428; circularly polarised horns H01Q13/0241; cross-polarised horns H01Q13/0258; polarisation converters H01Q15/242; cross-polarised rear feeds H01Q19/136; crossed polarisation dual antenna H01Q25/001)} - G01S 2013/9316: {combined with communication equipment with other vehicles or with base stations} - G01S 2013/93273: {on the top of the vehicles} - H01Q 1/3208: {characterised by the application wherein the antenna is used} - H01Q 1/3233: {particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems} - H01Q 1/3275: {mounted on a horizontal surface of the vehicle, e.g. on roof, hood, trunk} - G01S: RADIO 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 - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) ## Abstract The present invention relates to an antenna, a vehicle radar, and a vehicle equipped with the same. An antenna according to an embodiment of the present invention comprises: a substrate; a first conductive patch disposed on a first surface of the substrate; a second conductive patch disposed on a second surface of the substrate; first and second feeders electrically connected to the first conductive patch; a plurality of vias surrounding the periphery of the first and second conductive patches; a loop member disposed on the first surface of the substrate and surrounding the vias; and a third feeder electrically connected to the loop member, wherein the area of the first conductive patch and the area of the second conductive patch are the same. Thus, it is possible to stably transmit and receive radio waves in all directions. ## Claims ### Claim 1 An antenna comprising: a substrate; a first conductive patch disposed on a front surface of the substrate; a second conductive patch disposed on a rear surface of the substrate; first and second feeders electrically connected to the first conductive patch; a plurality of vias surrounding peripheries of the first and second conductive patches; a loop member disposed on the front surface of the substrate and surrounding the vias; and a third feeder electrically connected to the loop member, wherein the first conductive patch and the second conductive patch have a circular shape, wherein the first and second feeders penetrate between the front surface of the substrate and the rear surface of the substrate, wherein a first end of the first feeder is electrically connected to the first conductive patch and a second end of the first feeder is electrically isolated from the second conductive patch, wherein a first end of the second feeder is electrically connected to the first conductive patch and a second end of the second feeder is electrically isolated from the second conductive patch, wherein the second end of the first feeder and the second end of the second feeder are connected to first and second conductive members, respectively, and are configured to be applied with a first electrical signal and a second electrical signal, respectively, and wherein the second end of the first feeder, the second end of the second feeder, the second conductive patch and the plurality of vias surrounding the second conductive patch are formed on the rear surface of the substrate, and the loop member is absent from the rear surface of the substrate. ### Claim 2 (depends on 1) The antenna according to claim 1, wherein electrical signals are applied to the first to third feeders to form magnetic poles of three orthogonal axes. ### Claim 3 (depends on 1) The antenna according to claim 1, wherein the first and second feeders isolated from the second conductive patch are electrically connected to the first conductive patch through first and second holes. ### Claim 4 (depends on 1) The antenna according to claim 1, wherein the second conductive patch is electrically connected to the ground. ### Claim 5 (depends on 1) The antenna according to claim 1, wherein electrical signals are time-divisionally applied to the first to third feeders to time-divisionally form magnetic dipoles of three orthogonal axes. ### Claim 6 (depends on 1) The antenna according to claim 1, wherein electrical signals are simultaneously applied to the first to third feeders to simultaneously form magnetic dipoles of three orthogonal axes. ### Claim 7 (depends on 1) The antenna according to claim 1, wherein the vias are formed in a slot shape. ### Claim 8 (depends on 1) The antenna according to claim 1, wherein the loop member includes a plurality of conductive members having a circular shape, wherein gaps between the plurality of conductive members are formed in the loop member to form a capacitor, and wherein an area of the first conductive patch is equal to that of the second conductive patch. ### Claim 9 A vehicle radar comprising: an antenna; an antenna drive unit for driving the antenna; a transmission unit for transmitting a transmission signal to the antenna; a reception unit for performing signal processing with respect to a reception signal received from the antenna; and a processor for calculating distance information or phase information of an object located near a vehicle based on the transmission signal and the reception signal, wherein the antenna comprises: a substrate; a first conductive patch disposed on a front surface of the substrate; a second conductive patch disposed on a rear surface of the substrate; first and second feeders electrically connected to the first conductive patch; a plurality of vias surrounding peripheries of the first and second conductive patches; a loop member disposed on the front surface of the substrate and surrounding the vias; and a third feeder electrically connected to the loop member, wherein the first conductive patch and the second conductive patch have a circular shape, wherein the first and second feeders penetrate between the front surface of the substrate and the rear surface of the substrate, wherein a first end of the first feeder is electrically connected to the first conductive patch and a second end of the first feeder is electrically isolated from the second conductive patch, wherein a first end of the second feeder is electrically connected to the first conductive patch and a second end of the second feeder is electrically isolated from the second conductive patch, wherein the second end of the first feeder and the second end of the second feeder are connected to first and second conductive members, respectively, and are configured to be applied with a first electrical signal and a second electrical signal, respectively, and wherein the second end of the first feeder, the second end of the second feeder, the second conductive patch and the plurality of vias surrounding the second conductive patch are formed on the rear surface of the substrate, and the loop member is absent from the rear surface of the substrate. ### Claim 10 (depends on 9) The vehicle radar according to claim 9, wherein the processor performs control to apply electrical signals to the first to third feeders to form magnetic poles of three orthogonal axes. ### Claim 11 (depends on 9) The vehicle radar according to claim 9, wherein the processor performs control to time-divisionally apply electrical signals to the first to third feeders to time-divisionally form magnetic dipoles of three orthogonal axes. ### Claim 12 (depends on 9) The vehicle radar according to claim 9, wherein the processor performs control to simultaneously apply electrical signals to the first to third feeders to simultaneously form magnetic dipoles of three orthogonal axes. ### Claim 13 (depends on 9) The vehicle radar according to claim 9, wherein the loop member includes a plurality of conductive members having a circular shape, wherein gaps between the plurality of conductive members are formed in the loop member to form a capacitor, and wherein an area of the first conductive patch is equal to that of the second conductive patch. ### Claim 14 A vehicle comprising: a plurality of cameras; a radar; and a processor for performing control to autonomously drive the vehicle based on images from the plurality of cameras and distance information or phase information from the radar in an autonomous mode, wherein the radar comprises an antenna comprising a substrate, a first conductive patch disposed on a front surface of the substrate, a second conductive patch disposed on a rear surface of the substrate, first and second feeders electrically connected to the first conductive patch, a plurality of vias surrounding peripheries of the first and second conductive patches, a loop member disposed on the front surface of the substrate and surrounding the vias, and a third feeder electrically connected to the loop member, wherein the first conductive patch and the second conductive patch have a circular shape, wherein the first and second feeders penetrate between the front surface of the substrate and the rear surface of the substrate, wherein a first end of the first feeder is electrically connected to the first conductive patch and a second end of the first feeder is electrically isolated from the second conductive patch, wherein a first end of the second feeder is electrically connected to the first conductive patch and a second end of the second feeder is electrically isolated from the second conductive patch, wherein the second end of the first feeder and the second end of the second feeder are connected to first and second conductive members, respectively, and are configured to be applied with a first electrical signal and a second electrical signal, respectively, and wherein the second end of the first feeder, the second end of the second feeder, the second conductive patch and the plurality of vias surrounding the second conductive patch are formed on the rear surface of the substrate, and the loop member is absent from the rear surface of the substrate. ### Claim 15 (depends on 14) The vehicle according to claim 14, wherein the processor performs control to apply electrical signals to the first to third feeders to form magnetic poles of three orthogonal axes. ### Claim 16 (depends on 14) The vehicle according to claim 14, wherein the processor performs control to time-divisionally apply electrical signals to the first to third feeders to time-divisionally form magnetic dipoles of three orthogonal axes. ### Claim 17 (depends on 14) The vehicle according to claim 14, wherein the processor performs control to simultaneously apply electrical signals to the first to third feeders to simultaneously form magnetic dipoles of three orthogonal axes. ### Claim 18 (depends on 14) The vehicle according to claim 14, wherein the loop member includes a plurality of conductive members having a circular shape, wherein gaps between the plurality of conductive members are formed in the loop member to form a capacitor, and wherein an area of the first conductive patch is equal to that of the second conductive patch.