WO2019205063A1 - Antenne et dispositif de traitement de signal pour véhicule aérien sans pilote - Google Patents

Antenne et dispositif de traitement de signal pour véhicule aérien sans pilote Download PDF

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Publication number
WO2019205063A1
WO2019205063A1 PCT/CN2018/084701 CN2018084701W WO2019205063A1 WO 2019205063 A1 WO2019205063 A1 WO 2019205063A1 CN 2018084701 W CN2018084701 W CN 2018084701W WO 2019205063 A1 WO2019205063 A1 WO 2019205063A1
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WIPO (PCT)
Prior art keywords
radiant section
antenna
substrate
radiant
disposed
Prior art date
Application number
PCT/CN2018/084701
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English (en)
Chinese (zh)
Inventor
汤一君
Original Assignee
深圳市大疆创新科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市大疆创新科技有限公司 filed Critical 深圳市大疆创新科技有限公司
Priority to PCT/CN2018/084701 priority Critical patent/WO2019205063A1/fr
Priority to CN201880010530.0A priority patent/CN110291683A/zh
Publication of WO2019205063A1 publication Critical patent/WO2019205063A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/06—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/06—Details
    • H01Q9/065—Microstrip dipole antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0404—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station

Definitions

  • the present invention relates to the field of data transmission, and in particular to a signal processing device for an antenna and a drone.
  • drones are widely used in aerial photography, agriculture, power inspection and other fields.
  • directional antennas are often used to monitor and collect data information transmitted by drones. (eg image information, location information, status information, etc.).
  • data information transmitted by drones eg image information, location information, status information, etc.
  • communication dead angles often occur, resulting in differences in the listening distances in various directions, thereby affecting the data information transmitted by the antenna acquisition drone. Therefore, how to improve the coverage of the antenna and the monitoring distance has become a research hotspot.
  • the embodiment of the invention provides a signal processing device for an antenna and a drone, which can realize omnidirectional monitoring and improve the coverage and monitoring distance of the antenna.
  • an embodiment of the present invention provides an antenna, including: a substrate, a dipole disposed on the substrate, and a feeding network, where the dipole includes a first vibrator unit and a second vibrator unit;
  • the first transducer unit includes a first pair of radiant segments connected to the feed network, wherein the first pair of radiant segments includes a first radiant section disposed on a first side of the substrate and a second side disposed on a second side of the substrate a second radiant section, wherein the first radiant section is electrically connected to the second radiant section;
  • the second transducer unit includes a second pair of radiant segments connected to the feed network, wherein the second pair of radiant segments includes a third radiant section disposed on a first side of the substrate and a second radiant section disposed on a second side of the substrate a fourth radiant section, wherein the third radiant section and the fourth radiant section are electrically connected.
  • an embodiment of the present invention provides a signal processing device for a drone, including:
  • a signal receiver for receiving signals collected by the antenna
  • the plurality of antennas are circumferentially disposed along a fixed device of the antenna.
  • the antenna gain is improved by providing a dipole including a first vibrator unit and a second vibrator unit on the substrate; wherein the first vibrator unit includes a first radiating section connected to the feed network. Pairing, the second transducer unit includes a second pair of radiant segments connected to the feed network, each of the pair of radiant branches comprising at least one radiant section disposed on one side of the substrate and at least one radiant section disposed on the other side of the substrate.
  • the embodiment of the present invention improves the antenna gain by providing an antenna of such a structure, and improves the monitoring distance while achieving omnidirectional monitoring.
  • FIG. 1 is a schematic perspective structural view of an antenna according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of an antenna on a first side of a substrate according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of an antenna on a second side of a substrate according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of another antenna on a first side of a substrate according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of another antenna according to an embodiment of the present invention on a second side of a substrate;
  • FIG. 6 is a layout diagram of an antenna according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a signal processing device according to an embodiment of the present invention.
  • FIG. 8 is a structural diagram of an antenna according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of another antenna according to an embodiment of the present invention.
  • FIG. 10 is a perspective view of an antenna according to an embodiment of the present invention.
  • FIG. 11 is another antenna pattern according to an embodiment of the present invention.
  • feed network 31: first feed network; 311: first feed unit; 312: second feed unit; 32: second feed network; 321: third feed unit; Feeding department.
  • the antenna is an omnidirectional antenna
  • the antenna includes a substrate, a dipole disposed on the substrate, and a feed network.
  • the shape of the substrate can be approximated to a rectangle to facilitate installation of the antenna.
  • the dipoles disposed on the substrate may include N, wherein N is an integer greater than or equal to 2, and N dipoles included on the substrate may be connected in series to improve antenna gain.
  • the shape of the dipole is similar to a butterfly shape.
  • the dipole includes a first vibrator unit and a second vibrator unit, and in one embodiment, the first vibrator unit includes a first pair of radiant segments connected to the feed network, wherein the first radiation
  • the pair of branches includes a first radiant section disposed on a first side of the substrate and a second radiant section disposed on a second side of the substrate, wherein the first radiant section is electrically coupled to the second radiant section.
  • the second transducer unit includes a second pair of radiant segments connected to the feed network, wherein the second pair of radiant segments includes a third radiant section and a setting disposed on a first side of the substrate a fourth radiant section on a second side of the substrate, wherein the third radiant section and the fourth radiant section are electrically connected.
  • the first radiant section disposed on the first side of the substrate and the second radiant section disposed on the second side of the substrate may be electrically connected through the metal via, the first side disposed on the first side of the substrate
  • the third radiating branch and the fourth radiating branch disposed on the second side of the substrate may be electrically connected through the metal via.
  • the projection of the first radiant section on the second side of the substrate coincides with the second radiant section
  • the projection of the third radiant section on the second side of the substrate coincides with the fourth radiant section. It can be seen that in this manner, the radiation branches on both sides of the substrate are electrically connected through the metal vias, thereby eliminating the misalignment of the antenna pattern, thereby reducing the out-of-roundness of the antenna.
  • the out-of-roundness of the antenna refers to a deviation between a maximum value or a minimum level value (in dB) and an average value in a horizontal plane pattern of the omnidirectional antenna, wherein the average value refers to The arithmetic mean of the level values in the horizontal plane with a maximum interval of no more than 5° azimuth.
  • the first radiant section and the third radiant section disposed on the first side of the substrate are mirrored, and the second radiant section and the fourth radiant section disposed on the second side of the substrate are mirrored.
  • the first transducer unit includes a third pair of radiant segments connected to the feed network, wherein the third pair of radiant segments includes a fifth radiant section disposed on a first side of the substrate and And a sixth radiant section disposed on the second side of the substrate, wherein the fifth radiant section is electrically connected to the sixth radiant section.
  • the first radiant section is mirrored to the fifth radiant section, and the second radiant section is mirrored to the sixth radiant section.
  • the second transducer unit includes a fourth pair of radiant segments connected to the feed network, wherein the fourth pair of radiant segments includes a seventh radiant section disposed on a first side of the substrate and The eighth radiant section is disposed on the second side of the substrate, wherein the seventh radiant section is electrically connected to the eighth radiant section.
  • the third radiant section is mirrored to the seventh radiant section, and the fourth radiant section is mirrored to the eighth radiant section.
  • each of the radiant segments included in the first vibrator unit and the second oscillating unit in the embodiment of the present invention is a linear radiant section.
  • each radiant section on the substrate may be other The shape of the radiant section is as a curve, which is not specifically limited in the embodiment of the present invention.
  • the feed network includes a first feed network disposed on a first side of the substrate and a second feed network disposed on a second side of the substrate, wherein the first feed network is coupled to the first radiant node pair
  • the second feed network is coupled to the second pair of radiant nodes.
  • the first feed network includes a first power feeding portion and a second power feeding portion connected to the first power feeding portion, the first power feeding portion and the first radiation branch Connecting, wherein the second feeding portion is disposed in parallel with the first radiating branch and the third radiating branch.
  • the second feed network includes a third power feeding portion and a fourth power feeding portion connected to the third power feeding portion, the third power feeding portion being connected to the fourth radiation branch, wherein the The fourth feeding portion is disposed in parallel with the second radiating branch and the fourth radiating branch.
  • FIG. 1 is a schematic perspective structural view of an antenna according to an embodiment of the present invention.
  • the antenna shown in FIG. 1 includes a substrate 1 , a dipole 2 disposed on the substrate 1 , and a feed network. 3.
  • the dipole 2 includes a first vibrator unit 21 and a second vibrator unit 22.
  • the feed network 3 is connected to the first transducer unit 21 and the second transducer unit 22, respectively, so that the signals received by the first transducer unit 21 and the second transducer unit 22 are transmitted by the feed network 3, or
  • the feed network 3 transmits signals that the first transducer unit 21 and the second transducer unit 22 need to transmit.
  • the first transducer unit 21 includes a first pair of radiant segments connected to the feed network 3, wherein the first pair of radiant segments includes a first radiant section disposed on a first side of the substrate 1 and disposed at a second radiant section of the second side of the substrate 1.
  • the second transducer unit 22 includes a second pair of radiant segments connected to the feed network 3, wherein the second pair of radiant segments includes a third radiant section disposed on a first side of the substrate 1 and disposed on the substrate 1 The fourth radiant section of the second side.
  • the antenna provided by the present invention will be described in detail below with reference to FIGS. 2 and 3.
  • FIG. 2 is a schematic structural diagram of an antenna on a first side of a substrate according to an embodiment of the present invention.
  • the antenna includes a first radiating branch 211 in a first side of the substrate 1.
  • the antenna includes a first radiant section 211 and a fifth radiant section 212 in a first side of the substrate 1, wherein the first radiant section 211 and the fifth radiant section 212 are dipoles A radiant section included in the first transducer unit 21 of 2.
  • the antenna further includes a third radiant section 221 in the first side of the substrate 1, and in some cases, the antenna includes a third radiant section 221 and a seventh radiant section 222 in the first side of the substrate 1, wherein The third radiant section 221 and the seventh radiant section 222 are radiant sections included in the second transducer unit 22 included in the dipole 2.
  • the antenna further comprises a first feed network 31 on a first side of the substrate 1, the first feed network 31 being a partial feed network included in the feed network 3.
  • the first feeding network 31 includes a first feeding portion 311 and a second feeding portion 312 connected to the first feeding portion 311, wherein the first feeding portion 311 and the first radiation portion
  • the branch 211 is connected.
  • the first feeding portion 311 is connected to the first radiant section 211 and the fifth radiant section 212, and the second feeding part 312 and the first radiant section 211 are connected.
  • the second radiant section 221 is disposed in parallel with the third radiant section 221 and, in some cases, the fifth radiant section 212 and the third radiant section 222.
  • the first feed network 31 is electrically connected to the first radiant section.
  • the first feeding portion 311 and the second feeding portion 312 may be linear feeding portions.
  • FIG. 3 is a schematic structural diagram of an antenna on a second side of a substrate according to an embodiment of the present invention.
  • the antenna includes a second radiant section 213 in a second side of the substrate 1, which in some cases includes a second radiant section 213 and a second in the second side of the substrate 1.
  • the sixth radiating branch 214, the second radiating branch 213 and the sixth radiating branch 214 are radiating branches included in the first transducer unit 21 of the dipole 2.
  • the antenna includes a fourth radiating stub 223 in a second side of the substrate 1, and in some cases, the antenna further includes a fourth radiating stub 223 and an eighth radiating stub 224 in the second side of the substrate 1, wherein The fourth radiating branch 223 and the eighth radiating branch 224 are radiating branches included in the second transducer unit 22 included in the dipole 2.
  • the antenna further includes a second feed network 32 in the second side of the substrate 1, the second feed network 32 being a partial feed network included in the feed network 3.
  • the second feeding network 32 includes a third feeding portion 321 and a fourth feeding portion 322 connected to the third feeding portion 321 , the third feeding portion 321 and the fourth radiant section 223 Connecting, in some cases, the third feeding portion 321 is coupled to the fourth radiant section 223 and the eighth radiant section 224, wherein the fourth feeding portion 322 and the second radiant section 213
  • the fourth radiant section 223 is disposed in parallel with the fourth radiant section 223, and in some cases, the fourth ferrule 214 and the eighth radiant section 224 may be disposed in parallel.
  • the second feed network 32 is electrically coupled to the second pair of radiant nodes.
  • the third power feeding unit 321 and the fourth power feeding unit 322 may be linear power feeding units. The shape of each power feeding unit is not limited in the embodiment of the present invention.
  • the first radiant section 211 on the first side of the substrate 1 and the second radiant section 213 on the second side of the substrate 1 can be electrically connected through a metal via.
  • the first radiant section 211 and the second radiant section 213 are formed as a first radiant section pair.
  • the third radiant section 221 of the first side of the substrate 1 and the fourth radiant section 223 of the second side of the substrate 1 may be electrically connected through a metal via, wherein the third radiant section The second radiant section 223 is formed as a second radiant section pair.
  • the fifth radiant section 212 of the first side of the substrate 1 and the sixth radiant section 214 of the second side of the substrate 1 may be electrically connected through a metal via, wherein the fifth radiation The branch 212 and the sixth radiant section 214 form a third radiant section pair.
  • the seventh radiant section 222 of the first side of the substrate 1 and the eighth radiant section 224 of the second side of the substrate 1 may be electrically connected through a metal via, wherein the seventh radiation The branch 222 and the eighth radiant section 224 form a fourth pair of radiant branches.
  • the projection of the first horn section 211 of the first transducer unit 21 on the first side of the substrate 1 on the second side of the substrate 1 coincides with the second radiant section 213, and the first radiant section 211 is on the substrate.
  • the position of the first side corresponds to the position of the second radiant section 213 on the second side of the substrate 1; the projection of the second horn section 22 of the second transducer unit 22 on the first side of the substrate 1 on the second side of the substrate
  • the fourth radiant section 223 coincides with the position of the third radiant section 221 on the first side of the substrate 1 corresponding to the position of the fourth radiant section 223 on the second side of the substrate 1.
  • the first radiant section 211 and the third radiant section 221 on the first side of the substrate 1 are mirror-imaged, that is, the first radiant section 211 and the third radiant section 221 are symmetric with respect to an axis of symmetry on the first side of the substrate 1.
  • the second radiant section 213 on the second side of the substrate 1 is mirrored to the fourth radiant section 223, that is, the second radiant section 213 and the fourth radiant section 223 are symmetric with respect to the second side of the substrate 1. Axisymmetric settings.
  • the first radiant section 211 and the fifth radiant section 212 in the first transducer unit 21 on the first side of the substrate 1 are mirrored, that is, the first radiant section 211 and the fifth radiant section 212 are An axis of symmetry of the first side of the substrate 1 is symmetrically disposed. Further, the axis of symmetry may be the second feeding portion 312; the first portion of the first vibrator unit 21 on the second side of the substrate 1
  • the second radiant section 213 is mirrored to the sixth radiant section 214, that is, the second radiant section 213 and the sixth radiant section 214 are symmetrically disposed on an symmetry axis on the second side of the substrate 1. Further, the symmetry axis may
  • the fourth power feeding unit 322 is the fourth power feeding unit 322.
  • the third radiant section 221 and the seventh radiant section 222 in the second transducer unit 22 on the first side of the substrate 1 are mirrored, that is, the third radiant section 221 and the seventh radiant section 222 are on the first side of the substrate 1.
  • An symmetrical axisymmetric arrangement further, the symmetry axis may be the second feeding portion 312; the fourth radiant section 223 and the eighth radiation in the second oscillating unit 22 on the second side of the substrate 1
  • the branch 224 is mirrored, that is, the fourth radiant section 223 and the eighth radiant section 224 are symmetrically disposed on an symmetry axis on the second side of the substrate 1. Further, the symmetry axis may be the fourth feeding portion 322.
  • the first feeding portion 311 of the first feeding network 31 included in the feeding network 3 is projected on the second side of the substrate 1 and the third feeding portion 321 of the second feeding network 32.
  • the mirror image is disposed such that the projection of the first feeding portion 311 on the second side of the substrate 1 and the third feeding portion 321 are symmetrically disposed on an axis of symmetry on the second side of the substrate 1.
  • the second feeding portion 312 is disposed in parallel with the first radiating branch 211 and the third radiating branch 221, and the fourth feeding portion 322 is disposed in parallel with the second radiating branch 213 and the fourth radiating branch 223.
  • the projection of the second feeding portion 312 on the second side of the substrate 1 coincides with the fourth feeding portion 322, that is, the position of the second feeding portion 312 on the first side of the substrate 1 corresponds to
  • the fourth feeding portion 322 is disposed at the second side of the substrate 1.
  • the asymmetry of the two sides of the substrate 1 is indirectly eliminated by the radiant branches arranged on both sides of the substrate 1 to reduce the out-of-roundness of the antenna.
  • the radiant sections of the mirroring arrangement may not be mirrored. The length of each radiant section and whether or not the mirroring is set is not specifically limited in the embodiment of the present invention.
  • the lengths of the respective radiation branches on the substrate 1 may be the same, and when the lengths of the respective radiation branches are the same, the antenna may receive or transmit a signal of one frequency band.
  • the lengths of the radiant segments included in the first transducer unit 21 and the second transducer unit 22 may be different.
  • the length of the first radiant section 211 may be different from the length of the fifth radiant section 212, the third radiation.
  • the length of the branch 221 may be different from the length of the seventh radiant section 222, the length of the second radiant section 213 may be different from the length of the sixth radiant section 214, and the length of the fourth radiant section 223 may be the same as the length of the eighth radiant section 224
  • the lengths are different, and by setting an oscillator unit in this way, signals of two different frequency bands can be received or transmitted. It is to be understood that, when the lengths of the radiant sections are different, there are other implementations, which are not specifically limited in the embodiment of the present invention.
  • the dipoles disposed on the substrate 1 include N, wherein N is an integer greater than or equal to 2, and the N dipoles on the substrate 1 are connected in series. Thereby the antenna gain can be increased.
  • N is an integer greater than or equal to 2
  • the N dipoles on the substrate 1 are connected in series.
  • the case where a plurality of dipoles are provided on the antenna substrate can be specifically exemplified below with reference to FIGS. 4 and 5.
  • FIG. 4 is a schematic structural diagram of another antenna on a first side of a substrate according to an embodiment of the present invention.
  • the antenna includes a first partial radiation branch 201 and a second side on a first side of the substrate.
  • the first partial radiation branch 201 comprises 4 radiation branches
  • the second partial radiation branch 202 comprises 4 radiation branches
  • the third partial radiation branch 203 comprises 4 radiation branches, such that the antenna comprises a total of 12 on the first side of the substrate. Radiation branch.
  • FIG. 5 is a schematic structural diagram of another antenna on a second side of a substrate according to an embodiment of the present invention, including a fourth portion of the radiation branch 204, a fifth portion of the radiation branch 205, and a sixth portion of the radiation branch 206.
  • the fourth partial radiant section 204 includes four radiant branches
  • the fifth partial radiant section 205 includes four radiant sections
  • the sixth partial radiant section 206 includes four radiant sections, such that the antenna includes a total of 12 on the second side of the substrate. Radiation branch.
  • the dipoles of the antenna disposed on the substrate include three, wherein the first partial radiation branch 201 and the fourth partial radiation branch 204 constitute a first dipole, and the second partial radiation branch 202 And the fifth portion of the radiation branch 205 constitutes a second dipole, the third portion of the radiation branch 203 and the sixth portion of the radiation branch 206 constitute a third dipole, the first dipole, the second dipole, the third The dipoles are connected in series.
  • the structure of the antenna shown in FIG. 2 corresponds to the structure of the first partial radiant section 201 of FIG. 4, wherein the first partial radiant section 201 includes a first radiant section. 211.
  • the relationship between the respective radiation branches in the first partial radiation branch 201 is as described above, and the relationship between the respective feeding portions is as described above, between the respective feeding portions and the respective radiation branches The relationship is as described above and will not be repeated here.
  • the structure of the antenna shown in FIG. 3 on the second side of the substrate corresponds to the structure of the fourth partial radiation branch 204 in FIG. 5, wherein the fourth partial radiation branch 204 includes The second radiant section 213, the fourth radiant section 223, the sixth radiant section 214, the eighth radiant section 224, the third feeding portion 321 and the fourth feeding portion 322.
  • the relationship between the respective radiating branches in the fourth portion of the radiating branch 204 is as described above, and the relationship between the respective feeding portions is as described above, between the respective feeding portions and the respective radiating branches The relationship is as described above and will not be repeated here.
  • the specific explanation of the structure of the second partial radiation branch 202 and the structure of the third partial radiation branch 203 is similar to the structure of the first partial radiation branch 201 described above, and details are not described herein again.
  • the specific explanation of the structure of the fifth partial radiation branch 205 and the structure of the sixth partial radiation branch 206 is similar to that of the fourth partial radiation branch 201 described above, and will not be described herein.
  • the number of the dipoles disposed on the substrate may be any other number, and the radiant segments disposed on each side of the substrate may be any other number, in the embodiment of the present invention.
  • the number of dipoles disposed on the substrate and the number of radiant segments disposed on each side of the substrate are not specifically limited.
  • the positions of the first side and the second side of the substrate may be interchanged, the substrate may be a ceramic layer or a plastic layer, and the dipole and the feeding network may be double-sided copper-clad The process is printed onto both sides of the substrate for ease of processing.
  • the antenna of the embodiment of the present invention can be applied to a system that needs to transmit or receive signals, for example, a ground control system of a drone, a drone system, a control system of a robot, or a control system of a remote control vehicle. Wait.
  • a signal processing device for a drone according to an embodiment of the present invention will be described in detail below with reference to FIG. 6 to FIG.
  • An embodiment of the present invention provides a signal processing device for a drone, wherein the signal processing device may be a device including multiple antennas and a signal receiver, and the multiple antennas may be as described in the foregoing embodiments. Antenna, no more details here. Specifically, the signal processing device may collect signals sent by the drone through the multiple antennas, and receive signals collected by the multiple antennas through the signal receiver by using a diversity receiving technology, thereby improving signal receiving performance, thereby The data information is parsed more efficiently from the signals transmitted by the received drone.
  • the plurality of antennas are omnidirectional antennas
  • the signal receiver includes a plurality of signal receiving paths.
  • the antenna may be another type of antenna, such as a directional antenna, which is not specifically limited in the embodiment of the present invention.
  • the antenna in the signal processing device may include a feed line through which a signal receiver in the signal processing device can be connected to a feed network of the antenna.
  • the inner core of the feed line can be connected to a feed network on one side of the substrate, and the outer conductor of the feed line can be connected to a feed network on the other side of the substrate, and the connection mode is simple and convenient.
  • the signal processing device may be connected to the feed network of the antenna through the feeder to transmit signals collected by the transducer units of the antenna by using the feed network to implement a signal receiving function.
  • the signal processing device may be connected to the feed network of the antenna through the feeder to transmit signals transmitted by the each unit of the antenna to the drone or other device by using the feed network. , to achieve signal transmission.
  • the feed line may be a coaxial cable. In other embodiments, the feed line may be a cable of other materials, which is not specifically limited in the embodiment of the present invention.
  • the multiple antennas may include an antenna of a first frequency band and an antenna of a second frequency band, where the first frequency band is different from the second frequency band to improve antenna gain and reduce antenna Not roundness.
  • the signal processing device includes four antennas, wherein two antennas included are antennas of a first frequency band, and the other two antennas are antennas of a second frequency band, if the first frequency band is 2.4 GHz, and The second frequency band is 5.8 GHz, and the signal processing device includes two 2.4 GHz antennas and two 5.8 GHz antennas.
  • the first frequency band and the second frequency band may be the same, which is not specifically limited in the embodiment of the present invention.
  • a frequency band of a signal collected by an antenna of a first frequency band in the signal processing device may float in a first frequency range, and a signal collected by an antenna of 2.4 GHz may float up and down at 2.4 GHz (for example, : 2.4GHz to 2.5GHz).
  • the frequency band of the signal collected by the antenna of the second frequency band in the signal processing device may float in the second frequency range, for example, the frequency range of the signal collected by the 5.8 GHz antenna is in the full frequency band of 5G (for example, 5.1 GHz to 5.85) GHz), the 5G full frequency band includes 5.8 GHz.
  • the multiple antennas of the signal processing device may be axially disposed along the fixed device of the antenna. Specifically, the mutual position between the multiple antennas disposed by the signal processing device may be illustrated by FIG. 6 .
  • FIG. 6 is a layout diagram of an antenna according to an embodiment of the present invention.
  • the signal processing device includes a total of four antennas, such as an antenna 401, an antenna 402, an antenna 403, and an antenna 404.
  • the frequency band of the antenna 401 is the same as the frequency band of the antenna 402, and both are in the first frequency band, such as 2.4 GHz.
  • the frequency band of the antenna 403 is the same as the frequency band of the antenna 404, and both are the second frequency band, such as 5.8 GHz. It should be noted that the first frequency band is different from the second frequency band.
  • FIG. 7 is a schematic structural diagram of a signal processing device according to an embodiment of the present invention.
  • the signal processing device includes an antenna 501, an antenna 502, an antenna 503, an antenna 504, and a duplexer. 511.
  • the antenna 501 and the antenna 503 have the same frequency band and are both antennas of the first frequency band.
  • the antenna 502 and the antenna 504 have the same frequency band and are both antennas of the second frequency band.
  • the antenna 501 and the antenna 503 of the first frequency band may be an antenna of 2.4 GHz as shown in FIG. 8.
  • FIG. 8 is a schematic structural diagram of an antenna according to an embodiment of the present invention.
  • the antenna 502 and the antenna 504 of the second frequency band may be an antenna of 5.8 GHz as shown in FIG. 9.
  • FIG. 9 is a schematic structural diagram of another antenna according to an embodiment of the present invention.
  • the signal processing device can acquire the signal sent by the UAV collected by the antenna 501 in the first frequency band and the signal sent by the UAV collected by the antenna 502 in the second frequency band, and pass the duplex.
  • the 511 combines the signal collected by the antenna 501 with the signal collected by the antenna 502, and the signal processing device can transmit the signal synthesized by the duplexer 511 to the processor 540 for processing.
  • the signal processing device can also acquire the signal sent by the UAV collected by the antenna 503 of the first frequency band and the signal sent by the UAV collected by the antenna 504 of the second frequency band, and pass through the duplexer 512 to the antenna 503.
  • the acquired signal is combined with the signal collected by the antenna 504, and the signal processing device can transmit the signal synthesized by the duplexer 512 to the processor 540 for processing.
  • the duplexer 511 and the duplexer 512 may be the same duplexer, or may be different duplexers, which are not specifically limited in the embodiment of the present invention.
  • the signal processing device is provided with a low noise amplifier 521 before the duplexer 511, and the loss caused by the duplexer 511 and/or the rear stage RF cable can be compensated by the low noise amplifier 521.
  • the signal processing device is provided with a low noise amplifier 522 before the duplexer 512, and the loss caused by the duplexer 512 and/or the rear stage radio frequency cable can be compensated by the low noise amplifier 522.
  • the low noise amplifier 521 and the low noise amplifier 522 may be the same or different, and are not specifically limited in the embodiment of the present invention.
  • the signal processing device may receive the signal synthesized by the duplexer 511 through the receiving path 531 after synthesizing the signal through the duplexer 511, or may pass through the receiving path after synthesizing the signal through the duplexer 512.
  • 532 receives the signal synthesized by duplexer 512.
  • the receiving path 531 and the receiving path 532 respectively send the received signals to the processor 540 for processing, so as to improve the listening distance by the diversity receiving technology. It should be noted that in order to improve the effect of diversity reception, each antenna needs to maintain a large distance.
  • the signal processing device may parse the signal synthesized by the duplexer 511 through the receiving path 531 to obtain the supervisory information of the drone, wherein the duplexer 511 is acquired by the antenna 501.
  • the signal and the signal collected by antenna 502 are combined.
  • the signal processing device may parse the signal synthesized by the duplexer 512 through the receiving path 532 to obtain the supervisory information of the drone, wherein the duplexer 512 collects the signal collected by the antenna 503 and the antenna 504.
  • the signal is synthesized. In this way, the monitoring of the drone flight can be achieved.
  • the UAV supervision information may include an ID (identification number), a flight path, a height, a speed, a position (for example, latitude and longitude information), a heading, and the like of the drone.
  • the signal processing device synthesizes the signals collected by the multiple antennas by arranging the positions of the plurality of antennas, and receives and parses the synthesized signals by using the diversity receiving technology, thereby realizing the omnidirectional direction.
  • Coverage monitoring improves antenna gain and improves the monitoring range while satisfying omnidirectional monitoring, thus improving the monitoring efficiency.
  • the receive path 531 and the receive path 532 in the signal processing device may be parsing devices including a plurality of communication protocols, the parsing devices of the plurality of communication protocols being operable to parse signals received by the antenna to Obtaining an analysis result, wherein the parsing result of the parsing device of at least one of the parsing devices of the plurality of communication protocols includes the drone supervisory information.
  • the receiving path 531 includes analysis devices of two communication protocols, and if the receiving path 531 receives a signal including the drone supervision information synthesized by the duplexer 511, the two types of communication included in the receiving path 531
  • the parsing device of the protocol may parse the received signal including the drone supervisory information, so that the parsing device of at least one of the parsing devices of the two communication protocols can parse the drone Regulatory information.
  • the communication protocol used for communication between the drone and its ground control device may be wifi protocol, software defined wireless communication protocol (SDR) or custom protocol, it is different for analysis.
  • the protocol transmits a signal including the drone supervision information, so the receiving path 531 and the receiving path 532 can include a plurality of protocol parsing devices, and in this way, the UAV can be effectively identified by using the different communication protocols. signal.
  • the UAV may be a single-wing UAV or a multi-wing UAV, which is not specifically limited in the embodiment of the present invention.
  • the antenna in the signal processing device may be the antenna or other type of antenna in the above embodiment.
  • the antenna in the signal processing device may be an omnidirectional antenna in the foregoing embodiment, and the signal processing device may transmit the unmanned antenna through the low noise of the omnidirectional antenna.
  • the signal of the human-machine supervision information is effectively compensated for the losses generated in the duplexer and the rear-stage RF cable.
  • the antenna pattern of the embodiment of the present invention will be described below with reference to FIG. 10 and FIG.
  • FIG. 10 is an antenna pattern according to an embodiment of the present invention.
  • the antenna pattern shown in FIG. 10 is an antenna pattern of 2.4 GHz.
  • FIG. 11 is another antenna pattern according to an embodiment of the present invention.
  • the antenna pattern shown in FIG. 11 is an antenna pattern of 5.8 GHz. It can be concluded from FIG. 10 and FIG. 11 that the antenna gain can reach 6dBi and the horizontal flatness is less than or equal to 0.4 dB. It can be seen that the antenna gain is improved and the out-of-roundness of the antenna is reduced. And improve the listening distance while satisfying omnidirectional monitoring.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

Les modes de réalisation de la présente invention concernent une antenne et un dispositif de traitement de signal pour un véhicule aérien sans pilote, l'antenne comprenant : un substrat, un dipôle disposé sur le substrat, et un réseau d'alimentation, le dipôle comprenant une première unité de vibrateur et une seconde unité de vibrateur ; la première unité de vibrateur comprend une première paire de branches rayonnantes connectées au réseau d'alimentation, la première paire de branches rayonnantes comprenant une première branche rayonnante disposée sur un premier côté du substrat et une deuxième branche rayonnante disposée sur un second côté du substrat, la première branche rayonnante étant électroconnectée à la deuxième branche rayonnante ; et la seconde unité de vibrateur comprenant une seconde paire de branches rayonnantes connectées au réseau d'alimentation, la seconde paire de branches rayonnantes comprenant une troisième branche rayonnante disposée sur le premier côté du substrat et une quatrième branche rayonnante disposée sur le second côté du substrat, la troisième branche rayonnante étant électroconnectée à la quatrième branche rayonnante. Ainsi, le gain d'antenne est amélioré, et la distance de surveillance est augmentée tout en satisfaisant une surveillance omnidirectionnelle.
PCT/CN2018/084701 2018-04-26 2018-04-26 Antenne et dispositif de traitement de signal pour véhicule aérien sans pilote WO2019205063A1 (fr)

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CN114586236A (zh) * 2020-11-13 2022-06-03 深圳市大疆创新科技有限公司 无人机
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