CN104953271A - Composite right/left handed antenna based on array and provided with petal type interlayer and band control structure - Google Patents
Composite right/left handed antenna based on array and provided with petal type interlayer and band control structure Download PDFInfo
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- CN104953271A CN104953271A CN201510385364.0A CN201510385364A CN104953271A CN 104953271 A CN104953271 A CN 104953271A CN 201510385364 A CN201510385364 A CN 201510385364A CN 104953271 A CN104953271 A CN 104953271A
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Abstract
The invention discloses a composite right/left handed antenna based on an array and provided with a petal type interlayer and a band control structure and relates to array stacked microstrip antennas. The composite right/left handed antenna comprises an upper-layer patch, an upper substrate, an interlayer patch, a lower substrate and an earth plate sequentially from top to bottom, wherein a rectangular slot ring is arranged on the upper-layer patch; a rectangular patch 2*2 4-element array loaded with CSRR (complementary split ring resonator) left-handed feature structures is arranged in the rectangular slot ring in a central symmetry manner, each CSRR structure is formed by two concentric rings in opposite opening directions, the opening directions of the CSRR loaded in the four separated rectangular array elements turn for 90 degrees sequentially, and the four separated rectangular array elements are isolated by centrally symmetrical cross bands with conventional right-handed features; a feeding point is arranged on one side of the upper-layer patch, and short circuit pins are arranged in the centers of the four separated rectangular array elements; the interlayer patch adopts the petal-type patch 2*2 4-element array with the left-handed features and central symmetry, each petal-type array element is a petal-type ring segmented by two mutually orthogonal narrow-sided rectangles, and a via hole is formed in the center of the petal-type array element.
Description
Technical field
The present invention relates to array stack microstrip antenna, especially relate to a kind of right-hand man's combined antenna controlled based on the petal-shaped interlayer of array tape and band with petal-shaped interlayer, Mushroom structure, cross band control structure and CSRR structure.
Background technology
In recent years, wireless communication technology made rapid progress, a large amount of frequency spectrum resource is constantly developed use, therefore the Wireless Telecom Equipment of various high frequency hyperfrequency obtains the accreditation of people gradually, climb up the arena of history of wireless technology development, such as rfid system, WiMax system (WiMAX) and WLAN system (WLAN) etc.The life that a large amount of uses of these Wireless Telecom Equipments are for we provides a lot of convenience, also substantially increases the utilance to hyper band frequency spectrum simultaneously.
In today that Mobile Communication Development speed goes is fast, the antenna of traditional theory thinking design can not meet the demands such as radio communication is highly integrated, multifrequency is compatible, the series antenna being improved though with left-handed materials structure research becomes the focus of Antenna Design, has increased substantially antenna properties by loading the modes such as left-handed materials.In the past few years, the composite left-and-right-hand transmission line structure based on left-handed materials has low-loss feature because of it, and structurally has continuity, makes composite left-and-right-hand transmission line structure have the characteristic being better than traditional left-handed materials in the direction such as loss and bandwidth.Therefore the antenna using the thinking of composite left-and-right-hand transmission line structure to design and other microwave devices can realize more excellent performance, can meet the demand of the new antenna such as antenna miniaturization, multifrequency, ultra broadband.
Summary of the invention
The object of the present invention is to provide a kind of right-hand man's combined antenna controlled based on the petal-shaped interlayer of array tape and band with petal-shaped interlayer, Mushroom structure, cross band control structure and CSRR structure.
The present invention is laminated construction, be followed successively by upper strata paster from top to bottom, upper substrate, interlayer paster, infrabasal plate, ground plate, upper strata paster is square copper-clad, upper strata paster is provided with a rectangular aperture ring, symmetrical placement centered by rectangular aperture ring, be loaded with the quaternary battle array of the rectangular patch 2 × 2 of CSRR left hand characteristic structure, CSRR left hand characteristic structure is made up of the donut that two opening directions are contrary, the CSRR opening that four the rectangle array element inside be separated load turns to towards there being 90 ° successively, four the rectangle array elements be separated are isolated by the Central Symmetry cross band of conventional right hand characteristic, for controlling right-hand man's composite attribute of array element and interlayer petal, be provided with distributing point in paster side, upper strata, be provided with short circuit nail at the center of four rectangle array elements of Fen Liing, the quaternary battle array of the petal-shaped paster 2 × 2 of the symmetrical left hand characteristic placed centered by interlayer paster, each petal-shaped array element is divided into petal-shaped annulus by two mutually orthogonal narrow limit rectangles, and center is a rectangular metal via hole rotating 45 °.
Described upper substrate can adopt dielectric constant be 8 ~ 12 low consumption high performance dielectric baseplate material, preferably 10.7, the thickness of upper substrate can be 0.1 ~ 2.0mm, described infrabasal plate can adopt dielectric constant be 2 ~ 5 low consumption high performance dielectric baseplate material, preferably 2.2, the thickness of infrabasal plate can be 4 ~ 12mm; Upper substrate and infrabasal plate all can adopt square substrate, and size can be identical, and the length of side of square substrate can be 10 ~ 30mm.
The length of side of described upper strata paster can be 10 ~ 16mm, and the length of side of rectangular aperture ring can be 3 ~ 10mm, and the width of rectangular aperture ring can be 0.1 ~ 0.4mm.
The length of side of four rectangle array elements of described separation can be 1 ~ 5mm.The diameter of CSRR left hand characteristic structure outer shroud can be 1 ~ 4mm, and the diameter of inner ring can be 0.5 ~ 3.5mm, and the width of ring can be 0.1 ~ 0.4mm, and open seam is wide can be 0.1 ~ 0.4mm.The brachium of cross band can be 2 ~ 9mm, and arm is wide can be 0.1 ~ 0.5mm, and the seam between four rectangle array elements of separation and cross band is wide can be 0.1 ~ 0.4mm.
In described petal-shaped array element, the diameter of annulus can be 1 ~ 6mm, two mutually orthogonal length of narrow limit rectangle and the equal diameters of annulus, widely can be 0.1 ~ 0.4mm, and the length of side of rectangular metal via hole can be 0.1 ~ 0.7mm.
Described ground plate is lower floor's paster, is covered with good conductor layer, and the length of side of ground plate is identical with the length of side of infrabasal plate with upper substrate, is 10 ~ 30mm.
Described distributing point is positioned on the paster of upper strata, and for penetrating the cylindrical hole of substrate, distributing point radius can be 0.70mm ± 0.01mm.
The cylindrical hole of described short circuit nail for penetrating substrate, the radius of short circuit nail can be 0.30mm ± 0.01mm.
Two-frequency operation frequency range of the present invention can be 3.351 ~ 3.411GHz and 5.214 ~ 5.558GHz.
Compared with normal mobile communication microstrip antenna, the present invention has the following advantages:
The technology such as array, composite left-and-right-hand transmission line structure, left-handed materials, open loop resonance and lamination are introduced in the design of microstrip antenna for mobile communication by the present invention, novel in design practical.By introducing array technique, improve the radiation gain characteristic of antenna.By introducing the Mushroom structure of right-hand man's composite attribute, reducing the size of antenna, exciting the working frequency points of antenna.By introducing the quaternary battle array of the petal-shaped paster 2 × 2 of the left hand characteristic that Central Symmetry is placed, adding the capacitive reactance of antenna, enhancing the left hand characteristic of antenna.Placing, being loaded with the quaternary battle array of the rectangular patch 2 × 2 of CSRR left hand characteristic by introducing Central Symmetry, too increasing the capacitive reactance of antenna, enhancing the left hand characteristic of antenna.By introducing the CSRR structure of left hand characteristic, adding capacitive reactance and the induction reactance of antenna simultaneously, further enhancing the left hand characteristic of antenna.By four rectangle array elements that the Central Symmetry cross band isolation introducing conventional right hand characteristic is separated, right-hand man's composite attribute of array element and interlayer petal can be controlled.By introducing the structure that three kinds strengthen left hand characteristic, reducing the return loss of antenna, the frequency meeting return loss requirement being increased, achieves the two-frequency operation of antenna.Composite left-and-right-hand transmission line structure is incorporated in the design of microstrip antenna for mobile communication by the present invention, the multiple technologies such as array, composite left-and-right-hand transmission line structure, left-handed materials, open loop resonance and lamination are be combined with each other, designs micro-band dielectric antenna of a double frequency SF single feed, high-gain miniaturization.
Accompanying drawing explanation
Fig. 1 is the side-looking structural representation of the embodiment of the present invention.
Fig. 2 is the upper strata paster structure schematic diagram of the embodiment of the present invention.
Fig. 3 is the interlayer paster structure schematic diagram of the embodiment of the present invention.
Fig. 4 is the ground plate structural representation of the embodiment of the present invention.
Fig. 5 is the return loss (S of the embodiment of the present invention
11) performance map.In Figure 5, abscissa represents frequency (GHz), and ordinate represents return loss intensity (dB); Coordinate is rectangular coordinate.
Fig. 6 is embodiment of the present invention E face and H surface antenna gain pattern in WiMAX frequency range.In figure, coordinate is polar coordinates.
Fig. 7 is embodiment of the present invention E face and H surface antenna gain pattern in WLAN frequency range.In figure, coordinate is polar coordinates.
Embodiment
Below in conjunction with embodiment and accompanying drawing, technical scheme of the present invention and outstanding effect are described further.
See Fig. 1 ~ 4, upper substrate 1 for dielectric constant be the square medium substrate of 10.7, the length of side a of upper substrate 1
1for 22.0mm ± 0.1mm, thickness is 0.7mm ± 0.1mm, infrabasal plate 2 for dielectric constant be the square medium substrate of 2.2, the length of side of infrabasal plate 2 is also a
1, thickness is 8.1mm ± 0.1mm.All layers of copper is covered with at the upper surface of upper substrate 1 and the upper and lower surface of infrabasal plate 2.The upper surface of upper substrate 1 is the length of side a of upper strata paster 3, upper strata paster 3
2for 13.0mm ± 0.1mm.Upper strata paster 3 is provided with a rectangular aperture ring 8, the length of side a of rectangular aperture ring 8
3for 6.1mm ± 0.1mm, ring width s
1for 0.25mm ± 0.10mm.The symmetrical quaternary battle array of placing, being loaded with the rectangular patch 2 × 2 of CSRR left hand characteristic structure 11 centered by rectangular aperture ring 8, CSRR left hand characteristic structure 11 is made up of the donut that two opening directions are contrary, and the CSRR opening that four rectangle array elements 9 inside of separation load turns to towards there being 90 ° successively.Four the rectangle array elements 9 be separated are isolated by the Central Symmetry cross band 10 of conventional right hand characteristic.The length of side a of four the rectangle array elements 9 be separated
4for 2.4mm ± 0.1mm.Each CSRR left hand characteristic structure 11 is made up of the donut that two opening directions are contrary, the outer annular diameter d of donut
1for 2.0mm ± 0.1mm, annular diameters d
2for 1.2mm ± 0.1mm, ring width W
2for 0.2mm ± 0.1mm, A/F s
3for 0.2mm ± 0.1mm.Cross band 10 has two mutually orthogonal arms, the long L of every arm
1for 5.6mm ± 0.1mm, wide W
1for 0.3mm ± 0.1mm.Four wide s of seam between rectangle array element 9 and cross band 10 be separated
2for 0.25mm ± 0.10mm.The upper surface of infrabasal plate 2 is interlayer paster 4, the quaternary battle array of the petal-shaped paster 2 × 2 of the symmetrical left hand characteristic placed centered by interlayer paster 4.Each petal-shaped array element 12 is divided into petal-shaped annulus by two mutually orthogonal narrow limit rectangles, and center is a rectangular metal via hole rotating 45 °, the diameter d of annulus
3for 3.2mm ± 0.1mm, the length of mutually orthogonal narrow limit rectangle is the diameter d of annulus
3, wide s
4for 0.2mm ± 0.1mm, the side length b of rectangular metal via hole is 0.32mm ± 0.10mm.The lower surface of infrabasal plate 2 is ground plate 5, the length of side of ground plate 5 and the length of side a of infrabasal plate 2
1identical.
Marking 6 in figure is distributing point, and distributing point 6 radius is the hollow cylinder of 0.7mm ± 0.1mm.Distributing point 6 is through upper substrate 1 and infrabasal plate 2, and carrying out feed to upper strata paster 3, is highly 8.8mm ± 0.2mm.Marking 7 in figure is follow closely through 4 short circuits of upper substrate 1 and infrabasal plate 2, short circuit nail 7 connects upper strata paster 3 and ground plate 5, and by the rectangular metal via hole at petal-shaped array element 12 center, form the quaternary battle array of Mushroom (mushroom) structure 2 × 2 of right-hand man's composite attribute.Adopt the form feed of coaxial line offset-fed in the present invention, this feed form makes the S of antenna
11lower, gain improves, and wherein the inner core of coaxial line is connected with paster by feedback hole, and the outer core of coaxial line is connected with the ground plate of dielectric-slab lower surface.
See Fig. 5, therefrom can find out, the working frequency range of inventive antenna is: WiMAX frequency range 3.351 ~ 3.411GHz and WLAN frequency range 5.214 ~ 5.558GHz.At the return loss (S of these two working frequency range internal antennas
11) all below-10dB, the minimum echo loss in WiMAX wave band is 11.55dB, the minimum echo loss in WLAN wave band is 21.30dB.The present invention is respectively at the absolute bandwidth of WiMAX frequency range and relative bandwidth: 60MHz and 1.76%; Be respectively at the absolute bandwidth of WLAN frequency range and relative bandwidth: 344MHz and 6.37%, overall performance is better than general patch microstrip antenna, can be advantageously applied in WiMAX and WLAN mobile communication system.
See Fig. 6 and Fig. 7, wherein Fig. 6 is E face and the H face directional diagram of WiMAX band operation frequency 3.40GHz, and Fig. 7 is E face and the H face directional diagram of WLAN band operation frequency 5.40GHz.Result shows, the radiation characteristic of the patch microstrip antenna in the present invention is good, and highest-gain can reach 6.92dB.The requirement of mobile communication system can be met.
See table 1, table 1 gives manufacture mismachining tolerance of the present invention affects situation to antenna performance.
Table 1
Note: in table, data have certain redundancy, has certain relevance between each parameter, and what provide is equalization characteristic, can complete particular design according to needing optimum structural parameter.
Manufacture mismachining tolerance of the present invention is little to each parameter influence of antenna in allowed band.As, the spacing on the width in patch size, gap, gap and each limit, the size of medium substrate, dielectric-slab copper-clad thickness, feed position equal error control within 2%, and the relative dielectric constant control errors of ceramic dielectric substrate within 5% time, the parameters change of antenna is little.
Claims (10)
1. based on right-hand man's combined antenna that the petal-shaped interlayer of array tape and band control, it is characterized in that for laminated construction, be followed successively by upper strata paster from top to bottom, upper substrate, interlayer paster, infrabasal plate, ground plate, upper strata paster is square copper-clad, upper strata paster is provided with a rectangular aperture ring, symmetrical placement centered by rectangular aperture ring, be loaded with the quaternary battle array of the rectangular patch 2 × 2 of CSRR left hand characteristic structure, CSRR left hand characteristic structure is made up of the donut that two opening directions are contrary, the CSRR opening that four the rectangle array element inside be separated load turns to towards there being 90 ° successively, four the rectangle array elements be separated are isolated by the Central Symmetry cross band of conventional right hand characteristic, for controlling right-hand man's composite attribute of array element and interlayer petal, be provided with distributing point in paster side, upper strata, be provided with short circuit nail at the center of four rectangle array elements of Fen Liing, the quaternary battle array of the petal-shaped paster 2 × 2 of the symmetrical left hand characteristic placed centered by interlayer paster, each petal-shaped array element is divided into petal-shaped annulus by two mutually orthogonal narrow limit rectangles, and center is a rectangular metal via hole rotating 45 °.
2. as claimed in claim 1 based on right-hand man's combined antenna that the petal-shaped interlayer of array tape and band control, it is characterized in that described upper substrate employing dielectric constant is the low consumption high performance dielectric baseplate material of 8 ~ 12, preferably 10.7, the thickness of upper substrate can be 0.1 ~ 2.0mm, described infrabasal plate can adopt dielectric constant be 2 ~ 5 low consumption high performance dielectric baseplate material, preferably 2.2, the thickness of infrabasal plate can be 4 ~ 12mm; Upper substrate and infrabasal plate all can adopt square substrate, and size can be identical, and the length of side of square substrate can be 10 ~ 30mm.
3., as claimed in claim 1 based on right-hand man's combined antenna that the petal-shaped interlayer of array tape and band control, it is characterized in that the length of side of described upper strata paster is 10 ~ 16mm, the length of side of rectangular aperture ring is 3 ~ 10mm, and the width of rectangular aperture ring is 0.1 ~ 0.4mm.
4., as claimed in claim 1 based on right-hand man's combined antenna that the petal-shaped interlayer of array tape and band control, it is characterized in that the length of side of four rectangle array elements of described separation is 1 ~ 5mm; The diameter of CSRR left hand characteristic structure outer shroud is 1 ~ 4mm, and the diameter of inner ring is 0.5 ~ 3.5mm, and the width of ring is 0.1 ~ 0.4mm, and open seam is wide is 0.1 ~ 0.4mm.
5. as claimed in claim 1 based on right-hand man's combined antenna that the petal-shaped interlayer of array tape and band control, it is characterized in that the brachium of cross band is 2 ~ 9mm, arm is wide is 0.1 ~ 0.5mm, and the seam between four rectangle array elements of separation and cross band is wide is 0.1 ~ 0.4mm.
6. as claimed in claim 1 based on right-hand man's combined antenna that the petal-shaped interlayer of array tape and band control, it is characterized in that the diameter of annulus in described petal-shaped array element is 1 ~ 6mm, two mutually orthogonal length of narrow limit rectangle and the equal diameters of annulus, wide is 0.1 ~ 0.4mm, and the length of side of rectangular metal via hole is 0.1 ~ 0.7mm.
7., as claimed in claim 1 based on right-hand man's combined antenna that the petal-shaped interlayer of array tape and band control, it is characterized in that described ground plate is lower floor's paster, be covered with good conductor layer, the length of side of ground plate is identical with the length of side of infrabasal plate with upper substrate, is 10 ~ 30mm.
8., as claimed in claim 1 based on right-hand man's combined antenna that the petal-shaped interlayer of array tape and band control, it is characterized in that described distributing point is positioned on the paster of upper strata, for penetrating the cylindrical hole of substrate, distributing point radius is 0.70mm ± 0.01mm.
9., as claimed in claim 1 based on right-hand man's combined antenna that the petal-shaped interlayer of array tape and band control, it is characterized in that the cylindrical hole of described short circuit nail for penetrating substrate, the radius of short circuit nail is 0.30mm ± 0.01mm.
10., as claimed in claim 1 based on right-hand man's combined antenna that the petal-shaped interlayer of array tape and band control, it is characterized in that two-frequency operation frequency range is 3.351 ~ 3.411GHz and 5.214 ~ 5.558GHz.
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| CN201510385364.0A CN104953271B (en) | 2015-06-30 | 2015-06-30 | The right-hand man's combined antenna controlled based on the petal-shaped interlayer of array tape and band |
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|---|---|---|---|
| CN201510385364.0A CN104953271B (en) | 2015-06-30 | 2015-06-30 | The right-hand man's combined antenna controlled based on the petal-shaped interlayer of array tape and band |
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Cited By (2)
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| WO2018014574A1 (en) * | 2016-07-20 | 2018-01-25 | 周丹 | Rfid electronic antenna label provided with encapsulation part |
| CN112928455A (en) * | 2021-02-04 | 2021-06-08 | 北京邮电大学 | Metamaterial RFID (radio frequency identification) tag antenna |
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