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Double-layer wideband rectangular microband paste antenna with non-radiant edged feeder

A microstrip patch antenna, non-radiative technology, applied in the structural form of radiating elements, antennas, electrical components, etc., can solve the problems of narrow bandwidth, shortening the length of feeding lines, etc., achieve large scanning angle, shortening feeding length, compression The effect of wiring space

Active Publication Date: 2007-04-04
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the literature (M.L.Oberhart, Y.T.Lo, R.Q.H Lee, "A New Simple Feed Network for Microstrip Quaternary Array", Elctronic Letters, Vol.23, pp.436-437, April 1987) is the first to introduce a non- The coplanar feeding rectangular patch unit with radiating edge excitation can shorten the length of the feeding line when the feeding structure is used in the design of coplanar feeding microstrip array antenna, so it can be used for the design of high-efficiency microstrip array antenna. But it has the same narrow bandwidth as the single-layer rectangular microstrip antenna fed by the radiating edge

Method used

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  • Double-layer wideband rectangular microband paste antenna with non-radiant edged feeder
  • Double-layer wideband rectangular microband paste antenna with non-radiant edged feeder
  • Double-layer wideband rectangular microband paste antenna with non-radiant edged feeder

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Embodiment 1

[0042] An X-band non-radiating edge-fed broadband double-layer microstrip patch antenna. The structure used in this antenna is exactly the same as that in FIG. 1 , and the microstrip line 7 is used for feeding, and three slots 8 are opened on the parasitic element 5 . Among them, the plate parameters of the parasitic dielectric plate 1 are: the thickness is 0.254mm, and the relative dielectric constant is 4.36; the foam plate with the relative dielectric constant of the intermediate dielectric layer 2 is 1.07, and the thickness h=0.093λ 0 ; The plate parameters of the feed medium plate 3 are: the thickness is 0.508, and the relative permittivity is 2.94. The geometric parameters of the parasitic element 5 are: the length of the radiation side L 1 =0.36λ 0 , the length ratio L of the radiating side to the non-radiating side 1 / W 1 =1.22; the geometric parameters of the feed element 6 are: the length L of the radiation side 2 =0.59λ 0 / ε r3 0.5 , the length ratio L of th...

Embodiment 2

[0052] An S-band non-radiating edge-fed broadband double-layer microstrip patch antenna. The structural form of the antenna is basically the same as that in FIG. 1 , and the microstrip line is used for feeding. The difference is that the parasitic element 5 is located above the parasitic dielectric plate 1 . There are six slits 8 on the parasitic element of the antenna, wherein the plate parameters of the parasitic dielectric plate 1 are: the thickness is 1.5 mm, and the relative dielectric constant is 2.55; the intermediate dielectric layer 2 is air with a relative dielectric constant of about 1.0, Thickness h=0.056λ 0 ; The plate parameters of the feed medium plate 3 are: the thickness is 1.5, and the relative permittivity is 2.55. The geometric parameters of the parasitic element 5 are: the length of the radiation side L 1 =0.32λ 0 , the length ratio L of the radiating side to the non-radiating side 1 / W 1 =1.1; the geometric parameters of the feed element 6 are: the l...

Embodiment 3

[0056] An L-band non-radiating edge-fed broadband double-layer microstrip patch antenna. The structure used in this antenna is basically the same as that in Figure 1, except that the coplanar feed of the microstrip line 7 is changed to a coaxial probe feed, and there are 3 slots on the parasitic element 5. Among them, the parameters of the parasitic dielectric board 1 are: the thickness is 1.524 mm, and the relative dielectric constant is 3.48; the intermediate dielectric layer 2 is a foam board with a relative dielectric constant of about 1.4, and the thickness h=0.045λ 0 ; The plate parameters of the feeding medium plate 3 are: the thickness is 2, and the relative permittivity is 4.5; the geometric parameters of the parasitic element 5 are: the length of the radiation side L 1 =0.35λ 0 , the length ratio L of the radiating side to the non-radiating side 1 / W 1 = 1.4; the geometric parameters of the feed element 6 are: the length L of the radiation side 2 =0.43λ 0 / ε r3...

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Abstract

The invention is concerned with the broadband double-decked rectangle micro-band sticking- chip antenna of non-radiation side feed. The characteristic is: the length ratio of the radiating side and the non-radiating side of the rectangular spurious element and the rectangular feed element is 1.1~1.6; the rectangular spurious element is with more than one narrow slits that is vertical with the radiating side; the feed point is located at the non-radiating side of the feed element and departures from the midpoint of the non-radiating side. The invention is with good broadband characteristic, can get the standing-wave ratio better than 1.3 in the corresponding 8~16.5% broadband, the crossing cross polarization electrical level is better than -18.5dB, the magnification is bigger than 8.3dB. The invention not only can only use the antenna of the electronic equipment, but also can be the antenna unit of the micro-band array antenna.

Description

technical field [0001] The invention relates to a linearly polarized non-radiating edge-fed wideband double-layer rectangular microstrip patch antenna with high polarization purity (low cross polarization level), which can be used as a broadband antenna for communication and radar etc. The array unit of the array antenna can also be used alone as the terminal antenna of the radio equipment. Background technique: [0002] Because microstrip antennas have the characteristics of low cross-section, light weight, and easy processing, such antennas are widely used in military and civilian fields. Especially with the rapid development of synthetic aperture radar (SAR) technology in recent years, people have put forward higher and higher requirements for microstrip antennas, hoping to obtain broadband, high efficiency, and low cross-polarization performance on one antenna at the same time. And it has many advantages such as simple feeding and easy integration with the feeding syste...

Claims

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Application Information

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IPC IPC(8): H01Q13/08H01Q1/38
Inventor 卢晓鹏张玉梅李昂
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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