Broadband Miniaturized Low Profile Dual Polarized Antenna Based on Artificial Magnetic Conductor

A technology of artificial magnetic conductors and dual-polarized antennas, applied in antennas, resonant antennas, electrical short antennas, etc., can solve the problems of high profile, large size, and narrow bandwidth of dual-polarized antennas, and achieve miniaturization and broadband characteristics, effects of antenna size reduction

Inactive Publication Date: 2020-09-04
HARBIN INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of the existing dual-polarized antenna with too high section, large size and narrow bandwidth, thereby providing a broadband miniaturized low-profile dual-polarized antenna based on artificial magnetic conductor

Method used

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  • Broadband Miniaturized Low Profile Dual Polarized Antenna Based on Artificial Magnetic Conductor
  • Broadband Miniaturized Low Profile Dual Polarized Antenna Based on Artificial Magnetic Conductor
  • Broadband Miniaturized Low Profile Dual Polarized Antenna Based on Artificial Magnetic Conductor

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specific Embodiment approach 1

[0027] Specific implementation mode one: combine figure 1 and figure 2 Describe this embodiment in detail, the broadband miniaturized low-profile dual-polarized antenna based on the artificial magnetic conductor described in this embodiment includes a space coupling feeder 1, two dipole antennas 2, and first dielectric plates 3 and 4 Parasitic strip 4, AMC reflective backplane 5 and two 50Ω coaxial cables 6;

[0028] The spatially coupled feeder 1 is printed on the upper surface of the first dielectric plate 3, and the two dipole antennas 2 are vertical and printed on the lower surface of the first dielectric plate 3, and the parasitic strip 4 is formed by the two dipole antennas 2 The intersection points are center-symmetrically distributed around the first dielectric plate 3, and the AMC reflective backplane 5 is located below the first dielectric plate 3;

[0029] The two coaxial lines 6 are in one-to-one correspondence with the two dipole antennas 2, and the tops of the...

specific Embodiment approach 2

[0031] Specific embodiment two: this embodiment is to further illustrate the broadband miniaturized low-profile dual-polarized antenna based on the artificial magnetic conductor described in specific embodiment one. In this embodiment, the AMC reflective backplane 5 includes m periodic Metal unit 5-1, second dielectric plate 5-2, air cavity 5-3 and metal reflection plate 5-4;

[0032] m periodic metal units 5-1 are arranged in an equidistant rectangular array, and printed on the upper surface of the second dielectric plate 5-2, the metal reflector 5-4 is located under the second dielectric plate 5-2, and the metal An air cavity 5-3 exists between the reflection plate 5-4 and the second dielectric plate 5-2, and m is a positive integer greater than or equal to 9.

[0033] Both the first dielectric board 3 and the second dielectric board 5-2 are FR4 dielectric boards (relative dielectric constant is 4.4).

[0034] The adoption of the AMC reflective backplane 5 of this embodimen...

specific Embodiment approach 3

[0035] Specific embodiment three: this embodiment is a further description of the broadband miniaturized low-profile dual-polarized antenna based on the artificial magnetic conductor described in the second specific embodiment. In this embodiment, the m periodic metal units 5-1 are a metal patch unit 5-1-1 and b mushroom-shaped unit 5-1-2, a metal patch unit 5-1-1 is arranged in an equidistant rectangular array, and b mushroom-shaped unit 5-1-2 1-2 are located at the periphery of the array;

[0036] Each mushroom-shaped unit 5-1-2 includes a metal patch and a metal column. The top of the metal column is electrically connected to the metal patch through the metal via hole on the second dielectric board 5-2, and the bottom end of the metal column is connected to the metal column. The reflector 5-4 is connected.

[0037] The periodic metal unit 5-1 adopts two kinds of units, the metal patch unit 5-1-1 and the mushroom-shaped unit 5-1-2, which effectively improves the cross-polar...

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Abstract

The invention discloses an artificial magnetic conductor-based miniaturized broadband low-profile dual-polarized antenna, relates to the field of antennas and aims at solving the problems that an existing dual-polarized antenna is too high in profile, relatively large in size and narrow in band. A space coupling feeder line is printed on the upper surface of a first dielectric plate; two dipole antennas are vertical and are printed on the lower surface of the first dielectric plate; parasitic strips are symmetrically distributed on the periphery of the first dielectric plate by taking the intersection point of the two dipole antennas as the center; an AMC reflecting back plate is located below the first dielectric plate; two coaxial lines correspond to the two dipole antennas one by one; the two coaxial lines vertically pass through the AMC reflecting back plate and are electrically connected with the corresponding dipole antennas through outer conductors of the coaxial lines respectively; and inner conductors of the coaxial lines are electrically connected with a feeder point of the space coupling feeder line. The artificial magnetic conductor-based miniaturized broadband low-profile dual-polarized antenna is suitable for a mobile communication system.

Description

technical field [0001] The invention relates to the field of antennas, in particular to a broadband miniaturized low-profile antenna based on an artificial magnetic conductor (Artificial Magnetic Conductor, AMC). Background technique [0002] Broadband dual-polarized antennas with high cross-polarization ratio and capable of covering multiple mobile communication frequency bands are extremely important in current mobile communication systems, but there are the following problems: 1. The profile is too high; 2. The size is large and small 3. The bandwidth is narrow and cannot cover all mobile communication frequency bands (2G, 3G, 4G). Contents of the invention [0003] The purpose of the present invention is to solve the problems of the existing dual-polarized antennas with too high profile, large size and narrow bandwidth, so as to provide a wide-band miniaturized low-profile dual-polarized antenna based on artificial magnetic conductors. [0004] The broadband miniaturi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q5/28H01Q5/307H01Q9/04H01Q9/28H01Q19/10
CPCH01Q1/38H01Q1/50H01Q5/28H01Q5/307H01Q9/045H01Q9/285H01Q19/10H01Q19/104
Inventor 傅佳辉赵宇霖张志一
Owner HARBIN INST OF TECH
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