Classifications

• • 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
• • 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
  • H01Q1/48—Earthing means; Earth screens; Counterpoises
• • 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
  • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
  • H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
  • H01Q15/0053—Selective devices used as spatial filter or angular sidelobe filter
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01Q—ANTENNAS, i.e. RADIO AERIALS
  • H01Q21/00—Antenna arrays or systems
  • H01Q21/0006—Particular feeding systems
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01Q—ANTENNAS, i.e. RADIO AERIALS
  • H01Q21/00—Antenna arrays or systems
  • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
  • H01Q21/061—Two dimensional planar arrays
  • H01Q21/065—Patch antenna array
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01Q—ANTENNAS, i.e. RADIO AERIALS
  • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
  • H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands

Definitions

• the present invention relates to the technical field of wireless communication, in particular to a 5G high frequency ratio antenna with high harmonic suppression.
• the rapid development of wireless communication technology has caused various electronic devices to develop in the direction of miniaturization and multi-function, and the antenna, as a wireless communication technology bridge and air interface, will inevitably develop in this direction.
• the traditional single-frequency antenna has a single frequency band and does not have the function of harmonic suppression, so that the RF front-end usually needs to add a filter to meet practical requirements; therefore, dual-frequency antennas with harmonic suppression have been developed.
• the general microwave band dual-frequency antenna cannot meet the rapidly developing millimeter wave technology. Therefore, the study of dual-frequency antennas with large frequency ratios has become an important topic.
• the purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art, and propose a 5G high frequency ratio antenna with high harmonic suppression.
• the antenna has a compact structure, realizes structural multiplexing, and can be applied to the microwave range from 4.8 GHz to 5 GHz. And in the 5G wireless communication system in the 26GHz/28GHz range of the millimeter wave band.
• a 5G high frequency ratio antenna with high harmonic suppression including a first dielectric substrate, a second dielectric substrate, a third dielectric substrate, a millimeter wave patch array, Short-circuit pillar, microstrip connection line, metal floor, dumbbell-shaped gap, T-shaped stub, parasitic patch, feeder line and two pairs of open paths of different lengths; the first dielectric substrate, the second dielectric substrate, and the third dielectric substrate Stacked together, the second dielectric substrate is located between the first dielectric substrate and the third dielectric substrate, and is used to separate the first dielectric substrate and the third dielectric substrate; the millimeter wave patch array is provided on the first dielectric substrate The upper surface of the microstrip connection line is provided on the lower surface of the first dielectric substrate; the number of short-circuit posts is consistent with the number of millimeter-wave patches in the millimeter-wave patch array, and one short-circuit post corresponds to one millimeter wave Patch, the short-
• dumbbell-shaped slot and the feeder are perpendicular to each other, and the two ends of the dumbbell-shaped slot, the two parasitic patches and the transverse part of the T-shaped branch are all symmetrical with the feeder It is mirror-symmetrical left and right.
• the number of the millimeter wave patches is 4 to the nth power, and n is a natural number that is not zero.
• the present invention has the following advantages and beneficial effects:
• the antenna of the present invention does not require a complicated filter structure, and achieves better harmonic suppression characteristics.
• dumbbell-shaped slot of the antenna of the present invention is used as a radiating structure in the microwave frequency band, and as a feeding structure in the millimeter wave frequency band, realizing the multiplexing of the structure.
• the antenna of the present invention does not require a complicated structure for isolating microwave signals, and can achieve radiation characteristics in microwave and millimeter wave frequency bands.
• the simulation result of the return loss from the input port of the antenna of the present invention shows that its frequency band can simultaneously meet the requirements of 5G wireless communication systems in the microwave range of 4.8 GHz to 5 GHz and the millimeter wave range of 26 GHz/28 GHz.
• the antenna of the present invention has the advantages of low profile and compact structure, is suitable for engineering applications, and solves the problems of complex structure, large volume, and narrow bandwidth of large frequency antennas in the prior art.
• Fig. 1 is a perspective view of a 5G high frequency ratio antenna with high harmonic suppression according to an embodiment of the present invention.
• Fig. 2 is a front view of a 5G high frequency ratio antenna with high harmonic suppression according to an embodiment of the present invention.
• FIG. 3 is a top view of a first dielectric substrate according to an embodiment of the present invention.
• Fig. 4 is a bottom view of a first dielectric substrate according to an embodiment of the present invention.
• Fig. 5 is a perspective view of a second dielectric substrate according to an embodiment of the present invention.
• FIG. 6 is a top view of a third dielectric substrate according to an embodiment of the present invention.
• Fig. 7 is a bottom view of a third dielectric substrate according to an embodiment of the present invention.
• Fig. 8 is a graph of simulation results of
• the black solid line is the simulation curve of
• the gray dashed line is the gain Simulation curve.
• Fig. 9 is a main plane radiation pattern of a 5G high frequency ratio antenna with high harmonic suppression in a microwave range of 5 GHz according to an embodiment of the present invention.
• FIG. 10 is a main plane radiation pattern of a 5G high frequency ratio antenna with high harmonic suppression at 26.5 GHz in the millimeter wave band according to an embodiment of the present invention.
• the 5G high frequency ratio antenna with high harmonic suppression includes a first dielectric substrate 1, a second dielectric substrate 2, a third dielectric substrate 3, and a millimeter wave patch Array, short-circuit column 9, microstrip connection line 8, metal floor 7, dumbbell-shaped gap 12, T-shaped stub 13, parasitic patch 11, feeder 6 and two pairs of open paths 4 and 5 of different lengths; the first The dielectric substrate 1, the second dielectric substrate 2, and the third dielectric substrate 3 are stacked together.
• the second dielectric substrate 2 is located between the first dielectric substrate 1 and the third dielectric substrate 3 and is used to separate the first dielectric substrate 1 And the third dielectric substrate 3;
• the millimeter-wave patch array is set on the upper surface of the first dielectric substrate 1, and consists of 4 n-th millimeter-wave patches 10, where n is a natural number that is not 0, and in this
• n is a natural number that is not 0, and in this
• the eight millimeter wave patches 10 in the embodiment and the eight millimeter wave patches 10 in the figure are divided into two symmetrical rows, that is, four in a row;
• the microstrip connecting line 8 has a pair (ie, two Bar) set on the lower surface of the first dielectric substrate 1;
• the number of the short-circuit posts 9 should be the same as the number of the millimeter-wave patches 10 in the millimeter-wave patch array, and one short-circuit post 9 corresponds to one millimeter-wave patch 10 Since there are eight millimeter wave patches 10
• the wire 8 is connected, specifically a row of millimeter wave patches connected to a microstrip connecting wire 8; the metal floor 7 is provided on the upper surface of the third dielectric substrate 3, and the dumbbell-shaped gap 12 is etched from the metal floor 7 ,
• the dumbbell-shaped slot 12 can be used as a radiating structure in the microwave frequency band, and can be used as a feeding structure in the millimeter wave frequency band;
• the T-shaped branch 13 and the dumbbell-shaped slot 12 are connected;
• the parasitic patch 11 has two They are respectively arranged in the slots at both ends of the dumbbell-shaped slot 12;
• the feeder wire 6 and two pairs of open paths 4, 5 of different lengths are respectively arranged on the lower surface of the third dielectric substrate 3, and on the left and right sides of the feeder 6
• a short open route 5 and a long open route 4 are laterally symmetrically distributed.
• the short open route 5 and the long open route 4 are parallel to the feeder line 6, and the short open route 5 is located in the long open route 4 and Between the feeder lines 6, the two rows of millimeter wave patches are symmetrical about left and right with the feeder line 6 as the axis of symmetry.
• the dumbbell-shaped gap 12 and the feeder line 6 are perpendicular to each other, and two ends of the dumbbell-shaped gap 12
• the lateral parts of the parasitic patch 11 and the T-shaped branch 13 are both left and right mirror symmetry with the feed line 6 as the symmetry axis.
• the 5G high frequency ratio antenna of this embodiment was verified and simulated, as shown in FIG. 8
• (input port return loss) and gain (Gain) parameters of the antenna in the frequency range of 3GHz ⁇ 29GHz is shown.
• the black solid line is
• the gray dotted line is the gain simulation parameter; it can be seen that in the frequency range of 4.4GHz ⁇ 5.46GHz, the value of the solid curve is less than -10dB, and the value of the dashed line is in the range of 3.2 ⁇ 4dB; in the range of 25.3GHz ⁇ 28.5GHz , The value of the solid curve is less than -10dB, and the value of the dashed line is in the range of 13.65 ⁇ 15.56dB.
• the simulation results show that the 5G large-frequency antenna with high harmonic suppression in this embodiment has a wider bandwidth, good performance, and suppressed
• the frequency band within 6GHz ⁇ 23GHz can meet the requirements of 5G wireless communication system applications in the range of 4.8GHz ⁇ 5GHz and 26GHz/28GHz.
• the radiation pattern of the HFSS simulation model of the 5G high frequency ratio antenna with high harmonic suppression in this embodiment at 5 GHz is shown in FIG. 9.
• the radiation pattern of the HFSS simulation model of the 5G high frequency ratio antenna with high harmonic suppression in this embodiment at 26.5 GHz is shown in FIG. 10.
• the first dielectric substrate 1, the second dielectric substrate 2, and the third dielectric substrate 3 are made of any one of FR-4, polyimide, polytetrafluoroethylene glass cloth and co-fired ceramics;
• the metal floor 7, a pair of parasitic patches 11, a feeder line 6, a pair of microstrip connecting lines 8, two split lines 4 and 5, the millimeter wave patch 10 uses aluminum, iron, tin, copper, Any one of silver, gold, and platinum, or an alloy of any one of aluminum, iron, tin, copper, silver, gold, and platinum.

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• Waveguide Aerials (AREA)
• Details Of Aerials (AREA)
• Variable-Direction Aerials And Aerial Arrays (AREA)

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• 2019
  • 2019-09-29 CN CN201910930914.0A patent/CN110600870B/zh active Active
• 2020
  • 2020-06-02 JP JP2020564861A patent/JP7031909B2/ja active Active
  • 2020-06-02 WO PCT/CN2020/093912 patent/WO2021057072A1/zh active Application Filing

Patent Citations (5)

Non-Patent Citations (1)

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