CN103427160A - Double-frequency microstrip antenna of lug tuning ring lamination coupling BeiDou - Google Patents
Double-frequency microstrip antenna of lug tuning ring lamination coupling BeiDou Download PDFInfo
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- CN103427160A CN103427160A CN2013103733758A CN201310373375A CN103427160A CN 103427160 A CN103427160 A CN 103427160A CN 2013103733758 A CN2013103733758 A CN 2013103733758A CN 201310373375 A CN201310373375 A CN 201310373375A CN 103427160 A CN103427160 A CN 103427160A
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Abstract
The invention discloses a double-frequency microstrip antenna of a lug tuning ring lamination coupling BeiDou and relates to microstrip antennas. The double-frequency microstrip antenna of the lug tuning ring lamination coupling BeiDou is provided with an upper layer dielectric substrate and a lower layer dielectric substrate, wherein the upper layer dielectric substrate and the lower dielectric substrate are overlaid, and good conductors are laid on the upper surface of the upper layer dielectric substrate and the upper surface and the lower surface of the lower layer dielectric substrate. An upper square patch of inscribed arcs of a set of opposite angles is carved out of the upper surface of the upper layer dielectric substrate, anda small hole and a grooved lower square patch are carved out of the upper surface of the lower layer dialectic substrate. A lug tuning ring is arranged on the lower square patch and is composed of two circular rings which are located on the set of the opposite angles respectively, and the centers of the circular rings coincide with the vertex of the lower square patch. A round hole is formed in the lower square patch, and rectangular concave portions are arranged on one set of the opposite edges of the lower square patch. The good conductor of a photonic band gap structure coats and is carved out of the back of the lower layer dialectic substrate and the lower layer dialectic substrate is used as a grounding plate, wherein the photonic band gap structure is provided with 9 rectangular small holes.
Description
Technical field
The present invention relates to a kind of microstrip antenna, especially relate to a kind of small-sized ear shape tuning ring lamination coupling Big Dipper double-frequency micro-strip antenna for Beidou satellite system.
Background technology
Beidou satellite navigation and positioning system (BeiDou) is the active three-dimensional satellite fix of the regionality of Chinese independent research and development and communication system (CNSS).At present, this navigation system possesses location, time service and the message function in China and surrounding area scope thereof, and at numerous areas such as mapping, telecommunications, water conservancy, communications and transportation, fishery, exploration, forest fire protection and national security, has progressively played a significant role.
Antenna is one of core key technology of satellite, and it is determining the performance of satellite communication system.Along with the develop rapidly of satellite technology, people have higher requirement at aspects such as broadband, miniaturization and multifrequencies to its antenna.Because triones navigation system is active bidirectional ranging two dimensional navigation, user that it must comprises transmitter, this just puts forward higher requirement to Big Dipper terminal antenna, therefore the multifrequency of Beidou antenna and the research of circular polarization is had to important reference value and Practical significance.
Micro-strip paster antenna is a kind of antenna of microband paste as radiation source that use, it has, and section is low, volume is little, lightweight, can be conformal, easy of integration, feeding classification flexibly, be convenient to obtain the advantages such as linear polarization and circular polarization.In many fields such as mobile communication, satellite communication, guided missile remote measurement, Doppler radars, obtain a wide range of applications at present, wherein the shape of paster is one of key factor affected antenna performance, it directly affects the bandwidth of antenna, frequency, the indexs such as gain and polarization.
Summary of the invention
The object of the present invention is to provide a kind of small-sized ear shape tuning ring lamination coupling Big Dipper double-frequency micro-strip antenna for Beidou satellite system.
The present invention is provided with upper layer medium substrate and layer dielectric substrate, upper layer medium substrate and the stack of layer dielectric substrate, and upper layer medium substrate upper surface and layer dielectric substrate upper and lower surface all are covered with good conductor; Be carved with the upper square paster of one group of diagonal angle inscribe circular arc at the upper layer medium substrate upper surface, be carved with the lower square paster of aperture and fluting at the layer dielectric upper surface of base plate, described lower square paster is provided with ear shape tuning ring, described ear shape tuning ring is comprised of two annulus that lay respectively at one group of diagonal angle, the center of annulus overlaps with the summit of lower square paster, on lower square paster, is provided with circular hole; Be provided with rectangular depression on one group of opposite side of lower square paster; Described layer dielectric substrate back coating is carved with the good conductor of employing photonic band gap structure and, as ground plate, wherein adopts photonic band gap structure to be provided with 9 rectangle apertures.
The dielectric constant of described upper layer medium substrate and layer dielectric substrate can be 9～15, is preferably 10; Upper layer medium substrate and layer dielectric substrate can adopt square structure, and the length of side of described upper layer medium substrate can be 20～25mm, and representative value can be 22mm, and thickness can be 2～4mm, and representative value can be 3mm; The length of side of described layer dielectric substrate can be 30～40mm, and representative value can be 34mm, and thickness can be 2～4mm, and representative value can be 3mm.
Described good conductor can adopt copper or silver-colored material.
Described inscribe circular arc can be realized circular polarization, and the length of side of described square paster can be 15～20mm, and representative value is 19mm, and the radius of circular arc can be 2.5～3mm, and representative value is 2.8mm;
The outside diameter of described annulus can be 4～6mm, and representative value is 5.2mm, and the interior circular diameter of annulus can be 2.5～3.5mm, and representative value is 3.0mm.The long limit of the rectangle of described rectangular depression can be 12～16mm, and representative value is 15mm, and the rectangle minor face can be 0.4～0.6mm, and representative value is 0.5mm; At lower square paster distance center 2～3mm(representative value, be 2mm) to locate to be provided with diameter be that 1.5～2.5mm(representative value is 2mm) circular hole.
The length of side of described rectangle aperture can be 1～1.5mm, and representative value is 1mm.
The present invention adopts ear shape tuning ring technology to realize miniaturization and the circular polarization of microstrip antenna.
Design frequency of the present invention is double frequency, and its frequency range is respectively 1.610～1.622G and 2.450～2.562G, can cover the working frequency range of big-dipper satellite and global position system.
The present invention, owing to adopting the double-layer paster structure, realizes circular polarization characteristics by the shape that changes paster simultaneously, and the excursion of the adjustable frequency ratio that it is corresponding is large, therefore can meet the requirement of Beidou satellite communication system fully.
The present invention, owing to introducing ear shape tuning ring, has therefore realized the adjustability of antenna frequency, has widened intrinsic frequency band, has covered the working range of big-dipper satellite navigation system.In addition, adopt ear shape tuning ring technology can reduce antenna size, good pottery or the substrate of modified epoxy composite ceramic slab in conjunction with dielectric property, contribute to realize the miniaturization of antenna.Owing to adopting lamination coupling duplex feeding structure, therefore realized higher double frequency isolation, can meet that the Beidou antenna size is little, bandwidth is large, return loss is lower, it is high to gain, receive the requirement little with the channel interference that transmits.
The present invention compares and has the following advantages with conventional microstrip antenna:
Adopt lamination coupling duplex feeding structure, realized having the dual frequency characteristics of high isolation degree.The present invention has the two-frequency operation frequency band, as: L frequency range and S frequency range, the L frequency range is 1.610～1.622GHz, and absolute bandwidth is 0.012GHz, and relative bandwidth is 0.75%; The S frequency range is 2.450～2.562GHz, and absolute bandwidth is 0.112GHz, and relative bandwidth is 4.47%.
Owing to having adopted high-k substrate and ear shape tuning ring technology, make the size of antenna obtain further dwindling.
In sum, the present invention there is moderate dimensions, simple in structure, two-frequency operation, be with roomy, radiation feature good, be subject to the advantages such as such environmental effects is little, cost is low, easy of integration, can reach the requirement of the satellite communication systems such as big-dipper satellite and GPS navigation to antenna.
The accompanying drawing explanation
The upper layer medium substrate upper surface schematic diagram that Fig. 1 is the embodiment of the present invention.
The layer dielectric upper surface of base plate schematic diagram that Fig. 2 is the embodiment of the present invention.
The layer dielectric base lower surface schematic diagram that Fig. 3 is the embodiment of the present invention.
The side schematic view that Fig. 4 is the embodiment of the present invention.
Return loss (the S that Fig. 5 is the embodiment of the present invention
11) performance map.In Fig. 5, abscissa means frequency Frequency (GHz), and ordinate means return loss intensity The return loss of the Antenna (dB).Coordinate is rectangular coordinate in the drawings.
Return loss (the S that Fig. 6 is the embodiment of the present invention
22) performance map.In Fig. 6, abscissa means frequency Frequency (GHz), and ordinate means return loss intensity The return loss of the Antenna(dB).Coordinate is rectangular coordinate in the drawings.
Fig. 7 is that the embodiment of the present invention is at the E of L frequency range face directional diagram.Coordinate is polar coordinates in the drawings.
Fig. 8 is that the embodiment of the present invention is at the H of L frequency range face directional diagram.Coordinate is polar coordinates in the drawings.
Fig. 9 is that the embodiment of the present invention is at the E of S frequency range face directional diagram.Coordinate is polar coordinates in the drawings.
Figure 10 is that the embodiment of the present invention is at the H of S frequency range face directional diagram.Coordinate is polar coordinates in the drawings.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is further illustrated.
Referring to Fig. 1～4, the embodiment of the present invention is provided with upper layer medium substrate 2 and layer dielectric substrate 4, upper layer medium substrate 2 and 4 stacks of layer dielectric substrate, the upper surface of the upper surface of upper layer medium substrate 2, layer dielectric substrate 4, the lower surface of layer dielectric substrate 4 all are covered with good conductor; Be carved with the upper square paster 1 of one group of diagonal angle inscribe circular arc 11 at the upper surface of upper layer medium substrate 2, be carved with the lower square paster 3 of aperture 7 and fluting at the upper surface of layer dielectric substrate 4, described lower square paster 3 is provided with ear shape tuning ring 32, described ear shape tuning ring 32 is comprised of two annulus that lay respectively at one group of diagonal angle, the center of annulus overlaps with the summit of lower square paster 3, on lower square paster 3, is provided with circular hole 6; Be provided with rectangular depression 31 on one group of opposite side of lower square paster 3; Described layer dielectric substrate 4 back side coatings are carved with the good conductor of employing photonic band gap structure and, as ground plate, wherein adopt photonic band gap structure to be provided with 9 rectangle aperture A.
Described inscribe circular arc 11 can be realized circular polarization, and the length of side of described square paster 1 is 15～20mm, and representative value is 19mm, and the radius of circular arc is 2.5～3mm, and representative value is 2.8mm.
The outside diameter that forms the annulus of ear shape tuning ring 32 is 4～6mm, and representative value is 5.2mm, and the interior circular diameter of annulus is 2.5～3.5mm, and representative value is 3.0mm.On other one group of diagonal angle 31 of lower square paster, adopt multistage rectangle to widen band technology, representative value is 2, and the length of side of corner cut is respectively 1.5～2.5mm and 1～1.5mm, and representative value is 2mm and 1.5mm.At lower square paster distance center 2～3mm(representative value, be 2mm) to locate to be provided with diameter be that 1.5～2.5mm(representative value is 2mm) circular hole 6.On foursquare one group of opposite side, rectangular depression frequency tuning structure is arranged, the long 12～16mm of the rectangle that wherein caves in, representative value is 15mm, wide 0.4～0.6mm, representative value is 0.5mm.
The length of side of described rectangle aperture A is 1～1.5mm, and representative value is 1mm.
Described upper layer medium substrate and layer dielectric substrate adopt 10 high-k quality material, and upper layer medium substrate and layer dielectric substrate adopt square structure, and the length of side can be 30～40mm, and representative value is 34mm, and thick is 2～4mm, and representative value is 3mm.Described good conductor can adopt copper or silver-colored material.
Design frequency of the present invention is double frequency, and its frequency range is respectively 1.610～1.622G and 2.450～2.562G, can cover the working frequency range of big-dipper satellite and global position system.
The length of side of upper layer medium substrate is 22.0 ± 0.1mm, the length of side of layer dielectric substrate is 34.0 ± 0.1mm, the length of side of lower square paster is 25.0 ± 0.1mm, one group of diagonal angle of paster adopts multistage stepped spread spectrum corner cut technology, wherein the length of long sides of stepped corner cut is 2.0 ± 0.1mm, and length of short sides is 1.5 ± 0.1mm.On another group diagonal angle, ear shape tuning ring is arranged, annulus has 1/4th areas to overlap with rectangle.
By Fig. 5 and 6, can be found out, the working frequency range of antenna of the present invention is 1.610～1.622GHz and 2.450～2.562GHz.The return loss (S11 and S22) of these two working frequency range internal antennas all-below 10dB, minimum echo loss in the L frequency range is-30.2434dB, minimum echo loss in the S frequency range is-22.7448dB, in the return loss performance of whole passband internal antenna, all reaches requirement.The present invention is respectively in absolute bandwidth and the relative bandwidth of L frequency range: 0.012GHz and 0.75%; Absolute bandwidth and relative bandwidth in the S frequency range are respectively: 0.112GHz and 4.74%, be better than general paster microstrip antenna, and can be advantageously applied in Beidou satellite system.
Referring to Fig. 7～10, E face figure when wherein Fig. 7 and 8 is 1.616GHz and H face figure, E face figure when Fig. 9 and Figure 10 are 2.492GHz and H face figure.As can be seen from the figure, the present invention has directional radiation properties, can meet the requirement of satellite communication system.
Referring to table 1, table 1 has provided the affect situation of manufacture mismachining tolerance of the present invention on antenna performance.
Table 1
Annotate: the existing certain redundancy of data in table 1, certain relevance is arranged between each parameter, what provide is equalization characteristic, can complete particular design according to the need parameter of optimizing structure.
Manufacture mismachining tolerance of the present invention is little on the impact of each parameter of antenna in allowed limits.For example, on paster, the size of the spacing on the width in size, gap, Yu Ge limit, gap, ceramic dielectric substrate, dielectric-slab copper-clad thickness, feed position equal error are controlled in 2%, and the relative dielectric constant error of ceramic dielectric substrate is while being controlled in 5%, the parameters of antenna changes little.
Claims (10)
1. ear shape tuning ring lamination coupling Big Dipper double-frequency micro-strip antenna, it is characterized in that being provided with upper layer medium substrate and layer dielectric substrate, upper layer medium substrate and the stack of layer dielectric substrate, upper layer medium substrate upper surface and layer dielectric substrate upper and lower surface all are covered with good conductor; Be carved with the upper square paster of one group of diagonal angle inscribe circular arc at the upper layer medium substrate upper surface, be carved with the lower square paster of aperture and fluting at the layer dielectric upper surface of base plate, described lower square paster is provided with ear shape tuning ring, described ear shape tuning ring is comprised of two annulus that lay respectively at one group of diagonal angle, the center of annulus overlaps with the summit of lower square paster, on lower square paster, is provided with circular hole; Be provided with rectangular depression on one group of opposite side of lower square paster; Described layer dielectric substrate back coating is carved with the good conductor of employing photonic band gap structure and, as ground plate, wherein adopts photonic band gap structure to be provided with 9 rectangle apertures.
2. ear shape tuning ring lamination coupling Big Dipper double-frequency micro-strip antenna as claimed in claim 1, the dielectric constant that it is characterized in that described upper layer medium substrate and layer dielectric substrate is 9～15, preferably 10.
3. ear shape tuning ring lamination coupling Big Dipper double-frequency micro-strip antenna as claimed in claim 1, is characterized in that described upper layer medium substrate and layer dielectric substrate adopt square structure.
4. ear shape tuning ring lamination coupling Big Dipper double-frequency micro-strip antenna as claimed in claim 3, the length of side that it is characterized in that described upper layer medium substrate is 20～25mm, thickness is 2～4mm; The length of side of described layer dielectric substrate is 30～40mm, and thickness is 2～4mm.
5. ear shape tuning ring lamination coupling Big Dipper double-frequency micro-strip antenna as claimed in claim 4, the length of side that it is characterized in that described upper layer medium substrate is 22mm, thickness is 3mm; The length of side of described layer dielectric substrate is 34mm, and thickness is 3mm.
6. ear shape tuning ring lamination coupling Big Dipper double-frequency micro-strip antenna as claimed in claim 1, the length of side that it is characterized in that described square paster is 15～20mm, the radius of circular arc is 2.5～3mm.
7. ear shape tuning ring lamination coupling Big Dipper double-frequency micro-strip antenna as claimed in claim 6, the length of side that it is characterized in that described square paster is 19mm, the radius of circular arc is 2.8mm.
8. ear shape tuning ring lamination coupling Big Dipper double-frequency micro-strip antenna as claimed in claim 1, the outside diameter that it is characterized in that described annulus is 4～6mm, and representative value is 5.2mm, and the interior circular diameter of annulus is 2.5～3.5mm, and representative value is 3.0mm.
9. ear shape tuning ring lamination coupling Big Dipper double-frequency micro-strip antenna as claimed in claim 1, is characterized in that the long limit of rectangle of described rectangular depression is 12～16mm, and representative value is 15mm, and the rectangle minor face is 0.4～0.6mm, and representative value is 0.5mm; Be provided with at lower square paster distance center 2～3mm place the circular hole that diameter is 1.5～2.5mm.
10. ear shape tuning ring lamination coupling Big Dipper double-frequency micro-strip antenna as claimed in claim 1, the length of side that it is characterized in that described rectangle aperture is 1～1.5mm, representative value is 1mm.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104466382A (en) * | 2014-12-31 | 2015-03-25 | 厦门大学 | Stacked microstirp antenna based on nested recursion rotational symmetry CSRR distribution array |
| CN104617396A (en) * | 2015-01-15 | 2015-05-13 | 厦门大学 | Double-frequency broadband micro-strip antenna with inclined ladder type tuning arms and lug-shaped coupling circular rings for Big Dipper |
| CN104821432A (en) * | 2015-05-15 | 2015-08-05 | 厦门大学 | Complementary-split-ring and annular-gap stereoscopic cavity array regulation and control Beidou double-frequency microstrip antenna |
| CN105226390A (en) * | 2015-10-16 | 2016-01-06 | 大连海事大学 | A kind of 840/920MHz double frequency round polarized radio frequency identification reader antenna and impedance matching methods thereof |
| CN106207472A (en) * | 2016-06-29 | 2016-12-07 | 武汉中原电子集团有限公司 | A kind of double frequency round polarized micro-strip Beidou antenna |
| CN106252893A (en) * | 2016-01-18 | 2016-12-21 | 何若愚 | A kind of microband antenna unit |
| CN106450724A (en) * | 2016-10-08 | 2017-02-22 | 北京航天长征飞行器研究所 | Miniaturized seven-array-element adaptive anti-interference antenna |
| CN107546482A (en) * | 2017-08-29 | 2018-01-05 | 昆山开锐信息科技有限公司 | A kind of intelligent Multi-frequency micro-strip paster antenna |
| CN110768006A (en) * | 2019-10-31 | 2020-02-07 | Oppo广东移动通信有限公司 | Antenna module and electronic equipment |
| CN113381175A (en) * | 2021-05-26 | 2021-09-10 | 华东交通大学 | Double-frequency filtering antenna based on double-layer structure |
| CN113948855A (en) * | 2021-10-22 | 2022-01-18 | 云南大学 | Circularly polarized antenna |
| CN114566796A (en) * | 2022-03-11 | 2022-05-31 | 厦门大学 | Broadband high-gain circularly polarized filtering antenna |
| CN114927863A (en) * | 2022-05-07 | 2022-08-19 | 西安电子科技大学 | Multi-port microstrip patch antenna unit with high isolation and phased array |
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| CN104466382A (en) * | 2014-12-31 | 2015-03-25 | 厦门大学 | Stacked microstirp antenna based on nested recursion rotational symmetry CSRR distribution array |
| CN104617396A (en) * | 2015-01-15 | 2015-05-13 | 厦门大学 | Double-frequency broadband micro-strip antenna with inclined ladder type tuning arms and lug-shaped coupling circular rings for Big Dipper |
| CN104617396B (en) * | 2015-01-15 | 2017-05-10 | 厦门大学 | Double-frequency broadband micro-strip antenna with inclined ladder type tuning arms and lug-shaped coupling circular rings for Big Dipper |
| CN104821432B (en) * | 2015-05-15 | 2017-06-27 | 厦门大学 | Complementary openings ring and ring-like gap solid chamber array regulation and control Big Dipper double-frequency micro-strip antenna |
| CN104821432A (en) * | 2015-05-15 | 2015-08-05 | 厦门大学 | Complementary-split-ring and annular-gap stereoscopic cavity array regulation and control Beidou double-frequency microstrip antenna |
| CN105226390A (en) * | 2015-10-16 | 2016-01-06 | 大连海事大学 | A kind of 840/920MHz double frequency round polarized radio frequency identification reader antenna and impedance matching methods thereof |
| CN105226390B (en) * | 2015-10-16 | 2017-11-17 | 大连海事大学 | A kind of 840/920MHz double frequency round polarized radio frequency identification reader antenna and its impedance matching methods |
| CN106252893A (en) * | 2016-01-18 | 2016-12-21 | 何若愚 | A kind of microband antenna unit |
| CN106207472A (en) * | 2016-06-29 | 2016-12-07 | 武汉中原电子集团有限公司 | A kind of double frequency round polarized micro-strip Beidou antenna |
| CN106450724A (en) * | 2016-10-08 | 2017-02-22 | 北京航天长征飞行器研究所 | Miniaturized seven-array-element adaptive anti-interference antenna |
| CN107546482A (en) * | 2017-08-29 | 2018-01-05 | 昆山开锐信息科技有限公司 | A kind of intelligent Multi-frequency micro-strip paster antenna |
| CN110768006A (en) * | 2019-10-31 | 2020-02-07 | Oppo广东移动通信有限公司 | Antenna module and electronic equipment |
| CN113381175A (en) * | 2021-05-26 | 2021-09-10 | 华东交通大学 | Double-frequency filtering antenna based on double-layer structure |
| CN113948855A (en) * | 2021-10-22 | 2022-01-18 | 云南大学 | Circularly polarized antenna |
| CN114566796A (en) * | 2022-03-11 | 2022-05-31 | 厦门大学 | Broadband high-gain circularly polarized filtering antenna |
| CN114927863A (en) * | 2022-05-07 | 2022-08-19 | 西安电子科技大学 | Multi-port microstrip patch antenna unit with high isolation and phased array |
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