CN101383450B - Preparation method of dual frequency dual polarization microstrip patch antenna of low refraction guiding dielectric material - Google Patents
Preparation method of dual frequency dual polarization microstrip patch antenna of low refraction guiding dielectric material Download PDFInfo
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- CN101383450B CN101383450B CN2008102246922A CN200810224692A CN101383450B CN 101383450 B CN101383450 B CN 101383450B CN 2008102246922 A CN2008102246922 A CN 2008102246922A CN 200810224692 A CN200810224692 A CN 200810224692A CN 101383450 B CN101383450 B CN 101383450B
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Abstract
The invention relates to manufacturing method of a double-frequency and dualpolarization microstrip patch antenna which has low refractive index and is made of contrary flexure dielectric material. The manufacture method comprises the following steps: (1) work frequency of the microstrip patch antenna in two polarization directions are determined to be respectively f1 and f2; (2) a traditional rectangular microstrip patch antenna with the size of L*W is selected, and a microstrip line is used for feeding; (3) a material which has low refractive index and is composed of a periodic double-layer metal rectangular gridding is manufactured, and relative parameters are set; (4) the metal rectangular type material with low refractive index is put at a position with a height of d from the microstrip patch antenna, and is fixedly supported on the ground by bolts around, thereby the manufacture of the double-frequency and dualpolarization microstrip patch antenna which has low refractive index and is made of contrary flexure dielectric material is completed. The invention utilizes the metal rectangular type material with low refractive index as a coating of the microstrip patch antenna to respectively improve the directional property of the patch antenna in two polarization directions and in different frequency bands, thereby improving the gain of the antenna and compressing the half-power field angle of the patch antenna.
Description
Technical field
The present invention relates to a kind of micro-strip paster antenna, particularly a kind of manufacture method of dual-band and dual-polarization directed microstrip paster antenna.
Background technology
The dual-band and dual-polarization directed microstrip paster antenna is as the important component part of microstrip antenna, inherited advantages such as variation and feeding network, the active circuit of feeding classification and the polarization standard of microstrip antenna be integrated and becomes the leading role of current microstrip antenna.Generally need the antenna subsystem of two separation according to the design of dual-band dual-polarized antenna in the past, weight takes up space with institute and has all increased much than single subsystem.The at present normal method that adopts does, the polar system of two separation is integrated in the same antenna unit, utilizes the mode of microstrip antenna group battle array to realize the high-gain orientating function, on two polarised directions, utilizes microstrip feed line respectively each array element to be carried out feed; But the system design of entire antenna is more complicated also.
In recent years, a brand-new field has been started in the appearance of metamaterial, and its unique electromagnetic property has caused many scientific research persons' interest, and has brought dawn for the design of this high-performance new antenna.It is the artificial composite structure with the not available extraordinary physical property of natural material, is normally combined according to specific periodic regular by two kinds or two or more natural materials (normally metal and medium).The electromagnetic radiation characteristic of metamaterial is relevant with the plasma oscillation of free electron gas, and in microwave band, the effective dielectric constant of material and plasma frequency can be expressed with following formula
ω wherein
pBe plasma frequency, ω is electromagnetic frequency.When electromagnetic frequency during greater than plasma frequency, the effective dielectric constant of material is less than 1, and approaches 0; This less than 1, so the energy that monopole gives off will be bound near the normal, presents focusing effect with regard to the equivalent refractive index that means it; The antenna that utilizes metamaterial that electromagnetic low-refraction effect is made like this; Can realize the converging of aerial radiation electromagnetic wave beam reduced the half-wave lobe width of antenna, improve the directivity of antenna.2002; S.Enoch designs a kind of nearly zero refraction materials that is made up of six layers of periodicity metal grill, and its plasma frequency is inserted in a monopole antenna in this material at 14.5GHz then; Can obtain very high high directivity, its directivity when 14.6GHz up to 372.But after having added anisotropic media, the monopole antenna poor return loss still can not satisfy the demand of a lot of occasions.
Summary of the invention
The technical problem that the present invention will solve is: the deficiency that overcomes prior art; Propose a kind of metal rectangular grid type low refraction guiding dielectric material that utilizes and in the different frequency range of two polarised directions, improve the directivity of paster antenna respectively, also compressed the half-power beam angle of paster antenna simultaneously as the coating of micro-strip paster antenna.
The technical solution adopted for the present invention to solve the technical problems is: a kind of manufacture method of low refraction guiding dielectric material dual frequency dual polarization microstrip patch antenna is characterized in that may further comprise the steps:
(1) confirm micro-strip paster antenna respectively the operating frequency on two polarised directions be f1 and f2, corresponding wavelength is respectively λ
1And λ
2
(2) choose a traditional rectangular micro-strip paster antenna that is of a size of L * W, L representes the length of micro-strip paster antenna, and W representes the wide of micro-strip paster antenna, and carries out feed with microstrip line;
(3) make a low refraction guiding dielectric material that constitutes by periodicity double-level-metal rectangular mesh; Its basic parameter comprises that rectangular mesh is at cycle P1 on the x polarised direction and the cycle P2 on the y polarised direction; The size ax of airport * ay, and the distance h between the double layer of metal grid;
(4) the ground plane d that metal rectangular grid type low-index material is placed on apart from micro-strip paster antenna highly locates, and uses the nylon screw fixed support all around, and a kind of low refraction guiding dielectric material dual frequency dual polarization microstrip patch antenna design is accomplished;
(5) utilize existing process technology that the low refraction guiding dielectric material dual frequency dual polarization microstrip patch antenna that is designed is made.
Rectangular microband paste antenna in the said step (2), its length L＜λ
1/ 2, satisfy polarised direction, operating frequency f1 place resonance at x; Its width W＜λ
2/ 2, satisfy polarised direction, operating frequency f2 place resonance at y.
Rectangular microband paste antenna in the said step (2) all adopts feed microstrip line mechanism on x and y polarised direction.
Low refraction guiding dielectric material in the said step (3) is the rectangular mesh periodic structure, and its manufacture method is: at first cover at single face and adopt conventional lithography process spin coating photoresist, baking and curing, exposure, development, oven dry post bake, wet etching metal level step on metal level to produce the periodic metal grill structure of individual layer on the pcb board material of copper; Select the single-layer metal network consistency from top to bottom of two-layer above-mentioned making then and fix with nylon screw.
The metal rectangular size of mesh opening is following in the said step (3): the cycle on the x polarised direction is that P1 is generally λ
1/ 5～λ
1/ 2, the size ay of airport is generally λ
1/ 5～λ
1/ 3, the cycle on the y polarised direction is that P2 is generally λ
2/ 5～λ
2/ 2, the size ax of airport is generally λ
2/ 5～λ
2/ 3 and the wire netting compartment and the layer between distance h less than min (λ
1/ 2, λ
2/ 2).
Between the metal rectangular grid type low-refraction clad material in the said step (4) and the ground plane of micro-strip paster antenna apart from d less than min (λ
1/ 2, λ
2/ 2).
The metal rectangular grid type low-refraction clad material in the said step (4) and the ground plane of micro-strip paster antenna fixedly be around two objects, positioning and fixing with nylon screw or alternate manner, make that metal rectangular grid type low-refraction clad material is parallel with the ground plane of micro-strip paster antenna.
The present invention is with the advantage that is had of comparing of prior art:
1, the present invention is through being applied to metal rectangular grid type low refraction guiding dielectric material in the micro-strip paster antenna as coating; Can be implemented in the electromagnetic wave that in the different frequency range on two polarised directions paster antenna is given off focuses near the normal of propagation; Thereby realized high directivity; Improved the gain of micro-strip paster antenna, and half-power beam width has obtained also reducing.
2, tradition realizes that the dual-band and dual-polarization directed microstrip paster antenna need adopt array antenna to realize usually, and wherein the design of feeding network is quite complicated, and also can bring certain loss; The present invention only adopts a micro-strip paster antenna just to realize high directivity.
Description of drawings
Fig. 1 is a metal rectangular grid type low-refraction clad material sketch map;
Fig. 2 is the micro-strip paster antenna sketch map;
Fig. 3 is a low refraction guiding dielectric material dual frequency dual polarization microstrip patch antenna end view
Among the figure: 1 is the cell of metal grill type low-index material, and 2 is micro-strip paster antenna.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated, but protection scope of the present invention is not limited in following embodiment, should comprises the full content in claims.And those skilled in the art can realize the full content the claim from a following embodiment.
The detailed process of the embodiment of the invention is following:
(1) selecting the operating frequency of rectangular microband paste antenna on the x polarised direction is 14.2GHz, can get its wavelength X
1Be 21.13mm, the operating frequency on the y polarised direction is 15.6GHz, can get its wavelength X
2Be 19.2mm.
(2) select the traditional rectangular micro-strip paster antenna, its length be L=5.65mm resonance in 14.2GHz, W=5.1mm resonance is in 15.6GHz; The micro-strip paster antenna sketch map is as shown in Figure 2;
(3) this micro-strip paster antenna adopts microstrip line to its feed, and it is 2.2 that micro-strip paster antenna and microstrip line adopt conventional lithography process to be etched in dielectric constant, and thickness is on the medium substrate (model Rogers5880) of 1.575mm;
(4) make a low-index material that constitutes by periodicity double-level-metal rectangular mesh; Its concrete manufacturing process is following: at first utilize conventional lithography process; At dielectric constant 2.2; Thickness is that the single face of 1.575mm covers step such as spin coating photoresist, baking and curing, exposure, development, oven dry post bake, wet etching metal level on microwave pcb board (model Rogers5880) the front metal layer of copper; Cover at single face that to produce number of cycles on the microwave pcb board of copper be 11 * 11 metal rectangular grid periodic array; Here the parameter of metal grill structure choose the plasma frequency that directly determined the material that designs and the value of equivalent refractive index because this material is an anisotropic material, the equivalent refractive index at this metamaterial of major concern operating frequency of antenna place on x and y polarised direction here; Continue to optimize the metal rectangular mesh parameter make its at f1 and f2 place much smaller than 1, and approach 0; It is following that present embodiment is got its parameter size: the cycle on the x polarised direction is P1=5.7mm, the size ay=4.6mm of airport, and the cycle on the y polarised direction is P2=7.5mm, the size ax=4.9mm of airport; Select the metal grill structure of two-layer above-mentioned making then, and consistency from top to bottom periphery adopts nylon screw to fix, the wire netting compartment with layer between distance h be less than min (λ
1/ 2, λ
2/ 2), get h=3mm here; The metal rectangular grid type low-refraction clad material sketch map of made is as shown in Figure 1;
(5) coating of the metal rectangular grid type low-index material that designs as micro-strip paster antenna is placed on above the paster antenna; Fix with nylon screw around this material and the paster antenna ground plane, between metal rectangular grid type low-index material and the ground plane apart from d less than min (λ
1/ 2, λ
2/ 2), can when the entire antenna system emulation is calculated, be optimized processing again, obtain the antenna of best radiance d; Here choose d=7.25mm; A kind of low refraction guiding dielectric material dual frequency dual polarization microstrip patch antenna design is accomplished;
(6) utilize existing process technology that the low refraction guiding dielectric material dual frequency dual polarization microstrip patch antenna that is designed is made, the end view of the antenna of made is as shown in Figure 3.
Utilize low refraction guiding dielectric material dual frequency dual polarization microstrip patch antenna of the present invention; The gain that shows the low refraction guiding dielectric material dual frequency dual polarization microstrip patch antenna through Finite-Difference Time-Domain Method (FDTD) simulation result is on the x polarised direction; Frequency has improved 8.5dB during for 14.2GHz; Simultaneously on the y polarised direction; Frequency has improved 11dB during for 15.6GHz, and corresponding half-power beam width obviously compresses, so can draw metal rectangular grid type low-index material can effectively improve micro-strip paster antenna in the corresponding band on two polarised directions radiance.
Claims (7)
1. the manufacture method of a low refraction guiding dielectric material dual frequency dual polarization microstrip patch antenna is characterized in that may further comprise the steps:
(1) confirm micro-strip paster antenna respectively the operating frequency on two polarised directions be f1 and f2, corresponding wavelength is respectively λ
1And λ
2
(2) choose a traditional rectangular micro-strip paster antenna that is of a size of L * W, L representes the length of micro-strip paster antenna, and W representes the wide of micro-strip paster antenna, and carries out feed with microstrip line;
(3) make a low refraction guiding dielectric material that constitutes by periodicity double-level-metal rectangular mesh; Its basic parameter comprises that rectangular mesh is at cycle P1 on the x polarised direction and the cycle P2 on the y polarised direction; The size ax of airport * ay, and the distance h between the double layer of metal grid;
(4) the ground plane d that metal rectangular grid type low-index material is placed on apart from micro-strip paster antenna highly locates, and uses the nylon screw fixed support all around, and a kind of low refraction guiding dielectric material dual frequency dual polarization microstrip patch antenna design is accomplished;
(5) utilize existing process technology that the low refraction guiding dielectric material dual frequency dual polarization microstrip patch antenna that is designed is made.
2. the manufacture method of a kind of low refraction guiding dielectric material dual frequency dual polarization microstrip patch antenna according to claim 1 is characterized in that: the rectangular microband paste antenna in the said step (2), its length L＜λ
1/ 2, satisfy polarised direction, operating frequency f1 place resonance at x; Its width W＜λ
2/ 2, satisfy polarised direction, operating frequency f2 place resonance at y.
3. the manufacture method of a kind of low refraction guiding dielectric material dual frequency dual polarization microstrip patch antenna according to claim 1 is characterized in that: the rectangular microband paste antenna in the said step (2) all adopts feed microstrip line mechanism on x and y polarised direction.
4. the manufacture method of a kind of low refraction guiding dielectric material dual frequency dual polarization microstrip patch antenna according to claim 1; It is characterized in that: the low refraction guiding dielectric material in the said step (3) is the rectangular mesh periodic structure, and its manufacture method is: at first cover the periodic metal grill structure that the step that adopts conventional lithography process spin coating photoresist, baking and curing, exposure, development, oven dry post bake, wet etching metal level on metal level on the pcb board material of copper is produced individual layer at single face; Select the single-layer metal network consistency from top to bottom of two-layer above-mentioned making then and fix with nylon screw.
5. the manufacture method of a kind of low refraction guiding dielectric material dual frequency dual polarization microstrip patch antenna according to claim 1 is characterized in that: the metal rectangular size of mesh opening is following in the said step (3): the cycle on the x polarised direction is that P1 is generally λ
1/ 5～λ
1/ 2, the size ay of airport is generally λ
1/ 5～λ
1/ 3, the cycle on the y polarised direction is that P2 is generally λ
2/ 5～λ
2/ 2, the size ax of airport is generally λ
2/ 5～λ
2/ 3 and the wire netting compartment and the layer between distance h less than min (λ
1/ 2, λ
2/ 2).
6. the manufacture method of a kind of low refraction guiding dielectric material dual frequency dual polarization microstrip patch antenna according to claim 1 is characterized in that: between the metal rectangular grid type low-refraction clad material in the said step (4) and the ground plane of micro-strip paster antenna apart from d less than min (λ
1/ 2, λ
2/ 2).
7. the manufacture method of a kind of low refraction guiding dielectric material dual frequency dual polarization microstrip patch antenna according to claim 1; It is characterized in that: the metal rectangular grid type low-refraction clad material in the said step (4) and the ground plane of micro-strip paster antenna fixedly be around two objects, positioning and fixing with nylon screw or alternate manner, make that metal rectangular grid type low-refraction clad material is parallel with the ground plane of micro-strip paster antenna.
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|---|---|---|---|
| CN2008102246922A CN101383450B (en) | 2008-10-23 | 2008-10-23 | Preparation method of dual frequency dual polarization microstrip patch antenna of low refraction guiding dielectric material |
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| CN101383450B true CN101383450B (en) | 2012-04-18 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101777703B (en) * | 2009-12-25 | 2012-10-03 | 中国科学院光电技术研究所 | High-gain and high-power antenna based on materials with low refractive index |
| JP5737048B2 (en) * | 2011-08-12 | 2015-06-17 | カシオ計算機株式会社 | Patch antenna device and radio wave receiving device |
| CN103094695B (en) * | 2011-10-31 | 2016-05-04 | 深圳光启高等理工研究院 | A kind of method for packing of super material |
| CN102820548A (en) * | 2012-08-03 | 2012-12-12 | 深圳光启创新技术有限公司 | Low pass wave-transmitting material and antenna housing and antenna system of low pass wave-transmitting material |
| CN108470972B (en) * | 2017-02-23 | 2020-03-31 | 华为技术有限公司 | Terminal antenna and terminal |
| CN112187309A (en) * | 2019-06-13 | 2021-01-05 | 中兴通讯股份有限公司 | Millimeter wave transceiver |
| CN112563737B (en) * | 2020-11-02 | 2022-02-11 | 中山大学 | Dual-frequency antenna comprising periodic leaky-wave structure and manufacturing method thereof |
Citations (1)
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| CN1248348A (en) * | 1997-02-24 | 2000-03-22 | 艾利森电话股份有限公司 | Base station antenna arrangement |
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2008
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1248348A (en) * | 1997-02-24 | 2000-03-22 | 艾利森电话股份有限公司 | Base station antenna arrangement |
Non-Patent Citations (2)
| Title |
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| Cheng Huang.DUAL BAND DIRECTIVE PATCH.《MICROWAVE AND OPTICAL TECHNOLOGY LETTERS》.2010,全文. * |
| 郭榕等.基于异向介质的高增益圆极化微带天线的设计.《空间电子技术》.2007,(第04期),全文. * |
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