CN101740871A - Single-negative material ultra-slow waveguide-based miniaturized patch antenna - Google Patents
Single-negative material ultra-slow waveguide-based miniaturized patch antenna Download PDFInfo
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- CN101740871A CN101740871A CN201010104621A CN201010104621A CN101740871A CN 101740871 A CN101740871 A CN 101740871A CN 201010104621 A CN201010104621 A CN 201010104621A CN 201010104621 A CN201010104621 A CN 201010104621A CN 101740871 A CN101740871 A CN 101740871A
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Abstract
The invention relates to a single-negative material ultra-slow waveguide-based miniaturized patch antenna. The traditional patch antenna is large in size and poor in radiation efficiency and directionality. The miniaturized patch antenna comprises a negative dielectric constant dielectric layer, a common dielectric layer, a metal horizontal plane layer and a coaxial feed probe, wherein the negative dielectric constant dielectric layer is arranged between the common dielectric layer and the metal horizontal plane layer; the upper surface of the common dielectric layer is coated with an ideal electric conductor; the area of the metal horizontal plane layer is greater than that of the bottom surface of the negative dielectric constant dielectric layer; and the coaxial feed probe penetrates the negative dielectric constant dielectric layer, the common dielectric layer and the metal horizontal plane layer and is vertical to the negative dielectric constant dielectric layer, the common dielectric layer and the metal horizontal plane layer. The antenna has the advantages of very small size, simple feed method, convenient large-scale manufacture and low cost.
Description
Technical field
The invention belongs to the field of antenna of communication system, relate to a kind of miniaturized patch antenna based on single-negative material ultra-slow waveguide.
Background technology
Micro-strip paster antenna has obtained extensive studies and application as a kind of new antenna in modern national defense and commercial communication field.It has that section is low, volume is little, in light weight, cost is low, be easy to conformalization design and be easy to be integrated into plurality of advantages such as single module with active device and circuit.
Yet traditional paster antenna is because its resonance length needs half guide wavelength, thereby its size has been difficult to satisfy the requirement of following military and civilian communication for the antenna height miniaturization.Popular paster antenna miniaturization technology have adopt the high-k substrate, load short circuit pin or short circuit face, paster surface fluting prolongs current path etc., but all there is defective more or less in these technology, can impact other performance of antenna.For example, the substrate of employing high-k can reduce the impedance bandwidth and the radiation efficiency of antenna, loads methods such as short circuit pin or short circuit face, paster surface fluting and then can change the directional diagram of original paster antenna and cause degradation under the polarization purity.Recently some scholars have proposed as the new structures such as rectangular patch antenna of medium side by side about constituting based on the Zero-order resonant antenna of composite left-and-right-hand transmission line structure and partially filled negative material.These structures can drop to infinitesimal to the size of paster antenna in theory really, if but effective radiation is taken into account but existence difficulty in essence.When being realized the height miniaturization, paster antenna keep the high radiation efficiency and the directivity of antenna well to remain present difficult point technology.
Summary of the invention
The objective of the invention is in order to overcome in the existing paster antenna miniaturization technology deficiency such as the not high and pattern distortion of ubiquitous radiation efficiency, a kind of height miniaturization is provided, has the miniaturized patch antenna based on single-negative material ultra-slow waveguide of high radiation efficiency and good antenna pattern simultaneously again.
The present invention includes negative dielectric constant dielectric layer, generic media layer, metal ground layer and coaxial feed probe; The negative dielectric constant dielectric layer is arranged between generic media layer and the metal ground layer, the generic media layer upper surface that is positioned on the negative dielectric constant dielectric layer end face is coated with the desired electrical conductor, and the area of metal ground layer is greater than the base area of negative dielectric constant dielectric layer; Coaxial feed probe runs through the negative dielectric constant dielectric layer, and generic media layer and metal ground layer are provided with, and all vertical with negative dielectric constant dielectric layer, generic media layer and metal ground layer; The distance of the axis on the vertical direction of coaxial feed probe and paster antenna is f
p, λ/20≤f
p≤ λ/15; λ is the vacuum wavelength of operating frequency of antenna correspondence.
Described negative dielectric constant dielectric layer is a rectangular structure, and length is L
P, λ/3≤L
P≤ 2 λ/3; Width is W
P, λ/3≤W
P≤ λ; Highly be d
1, λ/40≤d
1≤ λ/15.
Described generic media layer is a rectangular structure, and length is identical with the negative dielectric constant dielectric layer with width, and the height of generic media layer is d
2, λ/200≤d
2≤ λ/100;
Described negative dielectric constant dielectric layer is coated with the desired electrical conductor on two sides of width and short transverse;
The height ratio d of the height of described negative dielectric constant dielectric layer and generic media layer
1/ d
2≈ | ε
1/ ε
2|, ε wherein
1Be negative dielectric constant dielectric layer dielectric constant, ε
2Dielectric constant for the generic media layer.
The size of antenna of the present invention is very little, and feed method is simple, is easy to large-scale processing and makes, and cost is low.In miniaturization, on radiation mechanism, guaranteed high radiation efficiency and high-gain, kept traditional paster limit to penetrate the good characteristics of directivity simultaneously, directionless figure distortion.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is an emulation stickogram of the present invention.
Embodiment
As shown in Figure 1, this antenna can operate on arbitrary operating frequency, and this operating frequency can be selected for use according to user's demand.For convenience of description, present embodiment selects for use λ=2.3GHz to be illustrated as the operating frequency of antenna.The medium substrate of this antenna is made of two-layer, is respectively negative dielectric constant dielectric layer 3 and generic media layer 2.Both length L
PBe λ/7.7, width W
PBe λ/6.5, the height d of negative dielectric constant dielectric layer 3
1Be λ/26, the height d of generic media layer 2
2Be λ/144.9, DIELECTRIC CONSTANT
1=-4.5, ε
2=1, magnetic permeability is 1.Generic media layer 2 upper surface are coated with desired electrical conductor layer 5.Negative dielectric constant dielectric layer 3 be positioned on the metal ground layer 4 length L of metal ground layer 4
GAnd width W
GEquate, be λ/1.3.Negative dielectric constant dielectric layer 3 is coated with the desired electrical conductor on two sides of width and short transverse, form desired electrical conductor layer 5.Coaxial feed probe 1 runs through negative dielectric constant dielectric layer 3, and generic media layer 2 and metal ground layer 4 are provided with, and all vertical with them; Axis on the vertical direction of coaxial feed probe 1 and paster antenna apart from f
pBe λ/17.4.In this example, owing to adopted suitable parameter to select, have the very large super slow wave of propagation constant on the interface of dielectric coefficient medium layer 3 and generic media layer 2, the size of paster antenna is far smaller than the half wavelength in the vacuum.Simultaneously, again because negative dielectric constant dielectric layer 3 two ends by desired electrical conductor border shielding, thereby have only the two ends of generic media layer 2 just to constitute the equivalent magnetic current radiation source of two constant amplitude homophases, thereby antenna has very high radiation efficiency.
The emulation reflection coefficient of this antenna as shown in Figure 2, as seen at the reflection coefficient of 2.3GHz frequency less than-30dB, antenna has obtained extraordinary coupling.(0.0772dB) and 5.188dB, the directional diagram limit is penetrated characteristic and is also kept very intactly simultaneously respectively up to 98.2% for the radiation efficiency of antenna and actual gain.
Claims (1)
1. based on the miniaturized patch antenna of single-negative material ultra-slow waveguide, comprise negative dielectric constant dielectric layer, generic media layer, metal ground layer and coaxial feed probe, it is characterized in that:
The negative dielectric constant dielectric layer is arranged between generic media layer and the metal ground layer, the generic media layer upper surface that is positioned on the negative dielectric constant dielectric layer end face is coated with the desired electrical conductor, and the area of metal ground layer is greater than the base area of negative dielectric constant dielectric layer; Coaxial feed probe runs through negative dielectric constant dielectric layer, generic media layer and the setting of metal ground layer, and with the negative dielectric constant dielectric layer, the generic media layer is all vertical with the metal ground layer; The distance of the axis on the vertical direction of coaxial feed probe and paster antenna is f
p, λ/20≤f
p≤ λ/15, λ is the vacuum wavelength of operating frequency of antenna correspondence;
Described negative dielectric constant dielectric layer is a rectangular structure, and length is L
P, λ/3≤L
P≤ 2 λ/3; Width is W
P, λ/3≤W
P≤ λ; Highly be d
1, λ/40≤d
1≤ λ/15;
Described generic media layer is a rectangular structure, and length is identical with the negative dielectric constant dielectric layer with width, and the height of generic media layer is d
2, λ/200≤d
2≤ λ/100;
Described negative dielectric constant dielectric layer is coated with the desired electrical conductor on two sides of width and short transverse;
The height ratio d of the height of described negative dielectric constant dielectric layer and generic media layer
1/ d
2≈ | ε
1/ ε
2|, ε wherein
1Be negative dielectric constant dielectric layer dielectric constant, ε
2Dielectric constant for the generic media layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010104621 CN101740871B (en) | 2010-01-29 | 2010-01-29 | Single-negative material ultra-slow waveguide-based miniaturized patch antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010104621 CN101740871B (en) | 2010-01-29 | 2010-01-29 | Single-negative material ultra-slow waveguide-based miniaturized patch antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101740871A true CN101740871A (en) | 2010-06-16 |
| CN101740871B CN101740871B (en) | 2013-08-14 |
Family
ID=42463954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010104621 Expired - Fee Related CN101740871B (en) | 2010-01-29 | 2010-01-29 | Single-negative material ultra-slow waveguide-based miniaturized patch antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161390A (en) * | 2015-06-18 | 2015-12-16 | 电子科技大学 | Novel metamaterial high-power microwave source |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009049303A1 (en) * | 2007-10-11 | 2009-04-16 | Rayspan Corporation | Single-layer metallization and via-less metamaterial structures |
| CN101494310A (en) * | 2008-11-27 | 2009-07-29 | 电子科技大学 | Tunable microwave material with negative refractive index |
| CN201638939U (en) * | 2010-01-29 | 2010-11-17 | 浙江大学 | Small-sized patch antenna based on waveguide of single-negative material superslow wave |
-
2010
- 2010-01-29 CN CN 201010104621 patent/CN101740871B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009049303A1 (en) * | 2007-10-11 | 2009-04-16 | Rayspan Corporation | Single-layer metallization and via-less metamaterial structures |
| CN101494310A (en) * | 2008-11-27 | 2009-07-29 | 电子科技大学 | Tunable microwave material with negative refractive index |
| CN201638939U (en) * | 2010-01-29 | 2010-11-17 | 浙江大学 | Small-sized patch antenna based on waveguide of single-negative material superslow wave |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161390A (en) * | 2015-06-18 | 2015-12-16 | 电子科技大学 | Novel metamaterial high-power microwave source |
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| CN101740871B (en) | 2013-08-14 |
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