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Broadband printed dipole antenna and antenna array

A dipole antenna and dipole technology, applied in antenna arrays, antennas, resonant antennas, etc., can solve the problems of inability to miniaturize the size of the antenna, destroying the structure of printed dipoles, and complex antenna structures. Achieve the effect of expanding the working frequency range, expanding the working frequency and simple structure

Active Publication Date: 2022-01-21
CETC YANGZHOU BAOJUN ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the method or structure provided in the above invention patent can effectively expand the relative operating frequency bandwidth of the antenna, its antenna structure is complex, requiring a large metal reflection structure and coaxial feeder, and the dipole antenna requires a certain height In addition, a larger plane size is required, which destroys the approximately two-dimensional structure of the printed dipole, and cannot achieve miniaturization of the antenna size.

Method used

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  • Broadband printed dipole antenna and antenna array
  • Broadband printed dipole antenna and antenna array
  • Broadband printed dipole antenna and antenna array

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as Figure 1-2 As shown, a broadband printed dipole antenna includes a dielectric plate 1, a metal plate 2 and an SMA radio frequency connector 3, the dielectric plate 1 is arranged at the center of the metal plate 2, and the SMA radio frequency connector 3 is fixed on the metal plate 2; the dielectric plate 1. A dipole unit 4 is provided on one side, and a microstrip line feed balun 5 is provided on the other side. A matching slot 41 is opened in the upper part of the center of the dipole unit 4. The end of the matching slot 41 is circular. The dipole unit 4 is in the Both sides of the matching slot 41 respectively extend mutually symmetrical dipole arms 42, and the width of the dipole arms 42 gradually increases along the direction away from the matching slot 41. The microstrip line feed balun 5 includes sequentially connected feed Microstrip line 51, coupling microstrip line 52 and open line 53, the width of one end connected to feed microstrip line 51 and coupl...

Embodiment 2

[0034]A broadband printed dipole antenna, the metal plate is 130mm long and 40mm wide, and its dielectric plate is as image 3 As shown in the figure, L 1 =54mm, L 2 =42mm,L 3 =20mm,L 4 = 1 mm, L 5 =9.9mm, L 6 = 3mm, h 1 =57mm, h 2 = 33mm, h 3 = 17mm, h 4 = 7mm, h 5 = 15.5mm, h 6 = 22mm, h 7 =0.9mm, θ 1 =85°, θ 2 = 21°, R 1 = 4mm, R 2 =15.2, the thickness of the dielectric plate is 1 mm, and the dielectric constant is 2.6.

[0035] The working frequency of this broadband printed dipole antenna covers 2GHz to 4GHz, reaching an octave, and the relative bandwidth reaches more than 66%. After actual testing, its voltage standing wave is as follows: Figure 4 As shown, it can be seen that the maximum in the frequency range is only 1.77, and the pattern in the operating frequency range is as follows Figure 5-7 As shown, it can be seen that the broadband printed dipole antenna has good performance and effectively extends the working frequency range.

[0036] The ab...

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Abstract

The invention discloses a broadband printed dipole antenna and an antenna array in the technical field of antenna engineering. The dipole antenna comprises a dielectric plate, one face of the dielectric plate is provided with a dipole unit, the other face of the dielectric plate is provided with a microstrip line feed balun, the dipole unit is provided with a matching groove, the dipole unit extends out of dipole arms on the two sides of the matching groove respectively, and the width of the dipole arms is gradually increased in the direction away from the matching groove. The microstrip line feed balun comprises a feed microstrip line, a coupling microstrip line and an open-circuit line which are connected in sequence. The butterfly-shaped dipole arms of the dipole antenna bring the same current distribution path and radiation characteristic under different working frequencies, the relative bandwidth of the dipole antenna is effectively expanded, and the antenna has the advantages of simple structure and low cost.

Description

technical field [0001] The invention relates to the technical field of antenna engineering, in particular to a broadband printed dipole antenna and an antenna array. Background technique [0002] The dipole antenna is composed of two coaxial straight conductors, which are connected to the feed transmission line at the two ends of the conductors close to each other. It is an antenna that can produce radiation lobes similar to the basic electric dipole. The total length It is about half of the wavelength λ (where c is the speed of light in vacuum) corresponding to the electromagnetic wave operating frequency f. It is widely used because of its simple structure, low manufacturing cost and good performance. The printed dipole antenna is a form of dipole antenna, which is composed of a dielectric board. The two coaxial straight conductors of the dipole antenna are printed on one side of the dielectric board in the form of a patch, and the feeder of the antenna And the balun str...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/50H01Q9/16H01Q21/00
CPCH01Q9/16H01Q1/38H01Q1/50H01Q21/0075
Inventor 符友屈宏博彭江范永媛缪星晔薛钢张林让
Owner CETC YANGZHOU BAOJUN ELECTRONICS