Low-profile double-frequency common-caliber monopole antenna based on cross-layer folding structure

Abstract

The invention discloses a low-profile double-frequency common-caliber monopole antenna based on a cross-layer folding structure. The antenna comprises an upper-layer dielectric substrate, a lower-layer dielectric substrate and a feed probe. The upper-layer dielectric substrate is directly stacked above the lower-layer dielectric substrate; the upper dielectric substrate is provided with a first non-metallized via hole; the lower dielectric substrate is provided with a second non-metallized via hole; and the feed probe passes through the second non-metallized via hole and the first non-metallized via hole for direct feed. The invention has the beneficial effects that the thickness of the patch antenna is further reduced on the premise of ensuring that the two frequency bands have enough bandwidth, and the center frequencies of the two frequency bands can be independently adjusted, so the patch antenna is suitable for various application scenes.

Description

technical field

[0001] The invention relates to the field of antennas, in particular to a low-profile dual-frequency common-aperture monopole antenna based on a cross-layer folding structure. Background technique

[0002] Under the background of increasing communication frequency bands but limited total system volume, the research on antennas with multi-band coverage capability, wide signal coverage and low profile is of great significance. Traditional monopole antennas, dielectric resonant antennas, etc. are easy to achieve multi-frequency operation and wide coverage, but they are relatively high.

[0003] A monopole antenna is a vertical quarter-wavelength antenna. The antenna is mounted on a ground plane, which can be actual ground or an artificial ground plane such as a vehicle body. The feed of the monopole antenna is carried out at the lower end using a coaxial cable, the ground conductor of the feed line is connected to the platform. In free space, the radiation pa...

Examples

Embodiment 1

[0059] In this embodiment, low-profile dual-frequency co-aperture monopole antennas with center frequencies of 2.4 GHz and 5.5 GHz are designed and manufactured.

[0060] In this embodiment, the dielectric constant ε of the upper dielectric substrate 2 and the lower dielectric substrate 4 r Both are 2.2, and the thickness H is 1.57mm.

[0061] In this embodiment, the radius Rp3 of the first circular patch 6 = 26mm; the inner radius R5 of the annular patch 5 = 29mm, the outer radius Rp2 = 47mm; the diameter D1 of the first metallized via hole 9 = 0.7mm, The number N1 = 20, the distance L1 from the center of the circle = 32 mm; the straight length D2 of the second metallized via hole 10 = 0.65 mm, the number N2 = 14, and the distance L2 from the center of the circle = 20.5 mm.

[0062] In this embodiment, the radius Rp1 of the second circular patch 3=35mm; the radius Rg=80mm of the metal floor 1; the straight longitude D3=0.8mm of the third metallized via hole 11, the number N3...

Embodiment 2

[0068] In this embodiment, low-profile dual-frequency co-aperture monopole antennas with center frequencies of 2.35 GHz and 5 GHz are designed.

[0069] In this embodiment, the dielectric constant ε of the upper dielectric substrate 2 and the lower dielectric substrate 4 r Both are 2.2, and the thickness H is 1.57mm.

[0070] In this embodiment, the radius Rp3 of the first circular patch 6 = 28 mm; the inner radius R5 of the annular patch 5 = 28.7 mm, and the outer radius Rp2 = 46 mm; the straight line D1 of the first metallized via hole 9 = 0.7 mm , the number N1 = 20, the distance L1 from the center of the circle = 29.4 mm; the straight line D2 of the second metallized via 10 = 0.8 mm, the number N2 = 14, and the distance L2 from the center of the circle = 22.5 mm.

[0071] In this embodiment, the radius Rp1 of the second circular patch 3=35mm; the radius Rg=80mm of the metal floor 1; the straight longitude D3=0.8mm of the third metallized via hole 11, the number N3=20, and...

technical field

[0001] The invention relates to the field of antennas, in particular to a low-profile dual-frequency common-aperture monopole antenna based on a cross-layer folding structure. Background technique

[0002] Under the background of increasing communication frequency bands but limited total system volume, the research on antennas with multi-band coverage capability, wide signal coverage and low profile is of great significance. Traditional monopole antennas, dielectric resonant antennas, etc. are easy to achieve multi-frequency operation and wide coverage, but they are relatively high.

[0003] A monopole antenna is a vertical quarter-wavelength antenna. The antenna is mounted on a ground plane, which can be actual ground or an artificial ground plane such as a vehicle body. The feed of the monopole antenna is carried out at the lower end using a coaxial cable, the ground conductor of the feed line is connected to the platform. In free space, the radiation pa...

Examples

Embodiment 1

[0059] In this embodiment, low-profile dual-frequency co-aperture monopole antennas with center frequencies of 2.4 GHz and 5.5 GHz are designed and manufactured.

[0060] In this embodiment, the dielectric constant ε of the upper dielectric substrate 2 and the lower dielectric substrate 4 r Both are 2.2, and the thickness H is 1.57mm.

[0061] In this embodiment, the radius Rp3 of the first circular patch 6 = 26mm; the inner radius R5 of the annular patch 5 = 29mm, the outer radius Rp2 = 47mm; the diameter D1 of the first metallized via hole 9 = 0.7mm, The number N1 = 20, the distance L1 from the center of the circle = 32 mm; the straight length D2 of the second metallized via hole 10 = 0.65 mm, the number N2 = 14, and the distance L2 from the center of the circle = 20.5 mm.

[0062] In this embodiment, the radius Rp1 of the second circular patch 3=35mm; the radius Rg=80mm of the metal floor 1; the straight longitude D3=0.8mm of the third metallized via hole 11, the number N3...

Embodiment 2

[0068] In this embodiment, low-profile dual-frequency co-aperture monopole antennas with center frequencies of 2.35 GHz and 5 GHz are designed.

[0069] In this embodiment, the dielectric constant ε of the upper dielectric substrate 2 and the lower dielectric substrate 4 r Both are 2.2, and the thickness H is 1.57mm.

[0070] In this embodiment, the radius Rp3 of the first circular patch 6 = 28 mm; the inner radius R5 of the annular patch 5 = 28.7 mm, and the outer radius Rp2 = 46 mm; the straight line D1 of the first metallized via hole 9 = 0.7 mm , the number N1 = 20, the distance L1 from the center of the circle = 29.4 mm; the straight line D2 of the second metallized via 10 = 0.8 mm, the number N2 = 14, and the distance L2 from the center of the circle = 22.5 mm.

[0071] In this embodiment, the radius Rp1 of the second circular patch 3=35mm; the radius Rg=80mm of the metal floor 1; the straight longitude D3=0.8mm of the third metallized via hole 11, the number N3=20, and...

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