CN102157798A - Beidou rectangular ceramic micro-strip antenna based on slot array - Google Patents
Beidou rectangular ceramic micro-strip antenna based on slot array Download PDFInfo
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- CN102157798A CN102157798A CN201110040958XA CN201110040958A CN102157798A CN 102157798 A CN102157798 A CN 102157798A CN 201110040958X A CN201110040958X A CN 201110040958XA CN 201110040958 A CN201110040958 A CN 201110040958A CN 102157798 A CN102157798 A CN 102157798A
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Abstract
The invention discloses a Beidou rectangular ceramic micro-strip antenna based on a slot array and relates to the micro-strip antenna. The invention provides the Beidou rectangular ceramic micro-strip antenna based on the slot array, which has a appropriate size, larger bandwidth, lower return loss, good gains and small interference on receiving and transmitting signal channels, and can cover a Beidou satellite system and a GPS (global positioning system) according to requirements. The Beidou rectangular ceramic micro-strip antenna is provided with a base and an SMA (small A type) joint, wherein an upper conductor layer is laid on the upper surface of the base, the L-shaped slot array is symmetrically arranged on the upper conductor layer, the distance from each L-shaped slot which is close to the edge of the upper conductor layer to the edge of the upper conductor layer is 0.5-4mm, the spacing interval between the adjacent two L-shaped slots is 0.5-3mm, the width of each L-shaped slot is 0.5-3mm, and the horizontal length and the vertical length of each L-shaped slot are 2-18mm respectively; a lower conductor layer is laid on the lower surface of the base, and the lower conductor layer is used a grounding plate; and the SMA joint is connected with the upper conductor layer of the base and the grounding plate respectively.
Description
Technical field
The present invention relates to a kind of microstrip antenna, especially relate to a kind of miniaturization gap array pottery microstrip antenna that is used for big-dipper satellite and GPS navigation system.
Background technology
China has built up " Big Dipper " two stars navigation navigation system in 2003." Big Dipper " satellite navigation and location system provides the RNAV system of satellite navigation locating information when being round-the-clock, full-time, the user can receive the request signal of satellite broadcasting at any time.It is China's first generation satellite navigation and location system, be that can providing of the independent exploitation of China, development and foundation is round-the-clock, high accuracy, on a large scale, positioned area satellite navigation and location system in real time fast.Its positioning principle system adopts 3 ball intersections to survey the star principle and positions, with 2 satellites is the centre of sphere, 2 centre ofs sphere to user's distance is radius 2 spheres that can draw, another sphere is to be the centre of sphere with the earth's core, drawing with user position point to the distance in the earth's core is the sphere of radius, and the plotted point of 3 spheres is user's position.Beidou satellite navigation and positioning system is made up of with calibration station and subscriber terminal equipment three parts Aerospace Satellite, ground master station (control centre), and it has fast two-dimensional location, two-way brief message communication and accurate time transmission three big basic functions.
Yet antenna must an indispensable part as satellite communication system, and it is determining the performance of satellite communication system.The first generation of China " Big Dipper " satellite communication system works in up (tranmitting frequency) L frequency range, descending (receive frequency) S frequency range.Use double frequency or multifrequency to compensate the time-delay that ionospheric propagation causes, require antenna on each frequency, all to have good working performance.In addition, because the satellite communication signal is a circularly polarised wave, so antenna should present circular polarization.
In fast development today of information technology, along with the extensive use of satellite communication system, the research of satellite communication system reception antenna is emerged in an endless stream, as one pole, bipolar, spiral, four arm spirals, and microstrip antenna, all can be used in the various antennas of satellite communication system.Section is low, volume is little because of having for traditional microstrip antenna, in light weight, can be conformal, easy of integration, feeding classification flexibly, be convenient to obtain advantages such as linear polarization and circular polarization, in mobile communication, satellite communication, the guided missile remote measurement, many fields such as Doppler radar have obtained to use widely.But gain limited is the defective of microstrip antenna always.Slot antenna is the new technology that developed recently gets up in the combination of micro-band technique, and it utilizes microstrip line construction and coaxial line to finish flexible feed.
Yang Xiaodong etc. (Yang Xiaodong, Chen Peng etc., a kind of design of half U type open slot overlapping broadband microstrip antenna [J], Harbin Engineering University's journal, 2008,29 (3)) have reported a kind of design of half U type open slot overlapping broadband microstrip antenna; Zhou Xinyan (Zhou Xinyan, China Satecom's navigation positioning system of the Big Dipper [J], China's mapping newspaper, 2003,09) China Satecom's navigation positioning system of the report Big Dipper.
Summary of the invention
The object of the present invention is to provide that a kind of moderate dimensions, bandwidth are big, return loss is lower, gain, receive and the channel interference that transmits little, can cover the Big Dipper rectangular ceramic microstrip antenna based on gap array of big-dipper satellite system and gps system on request.
Design frequency of the present invention is a double frequency, and its frequency range is respectively 1.56～1.64GHz and 2.44～2.56GHz, can cover the working frequency range of big-dipper satellite and global position system.
The present invention is provided with substrate and sub-miniature A connector.
The upper surface of described substrate is covered with upper conductor layer, on upper conductor layer, be arranged with L groove part crack array, the L groove part stand-off distance that is located at by the upper conductor layer limit is 0.5～4mm from the upper conductor layer limit, and the spacing in adjacent two L groove part cracks is 0.5～3mm, the width in L groove part crack is 0.5～3mm, and the slit horizontal length in L groove part crack is respectively 2～18mm with vertical length; The lower surface of described substrate is covered with lower conductor layer, and described lower conductor layer is as ground plate; Described sub-miniature A connector links to each other with ground plate with the last conductive layer of substrate respectively.
The length of described upper conductor layer can be 35～55mm, and width can be 15～30mm, and the length of lower conductor layer can be 40～65mm, and width can be 18～35mm, and described upper conductor layer can be copper layer or silver layer, and described lower conductor layer can be copper layer or silver layer.
The slit horizontal length in described L groove part crack preferably is respectively 10～18mm, 8～16mm with vertical length, and the length overall in L groove part crack can be 8～40mm, and the angle between the horizontal gap of described L groove part crack array and the vertical slit can be 60～120 °.
This structure makes L groove part crack array become the primary radiation source, thereby has strengthened directivity and gain.The length and width in L groove part crack change and the variation of gap array spacing can be controlled frequency position and gain flexibly.
Described substrate can be adopted the ceramic dielectric substrate, and the relative dielectric constant of described ceramic dielectric substrate can be 9～25, is preferably 15.5; The length of described ceramic dielectric substrate can be 40～65mm, and width can be 18～35mm, and thickness can be 1～4mm, and described ceramic dielectric substrate is preferably the cuboid of 25mm * 50mm * 2.5mm.
Described gap array logarithm can be at least 2 pairs.
This L groove part stand-off distance that keeps to the side in the front, the upper left corner, main cross section of described upper conductor layer is 1～4mm from the top, From Left is 1～4mm, be respectively 1～4mm in the L groove part crack, the lower right corner of the upper left corner, main cross section symmetry and the distance of adjacent side, and the spacing in inside and outside two L groove part cracks is 0.5～3mm.
The present invention compares with conventional microstrip antenna and has the following advantages:
Owing to adopted above structure, so the present invention has the two-frequency operation frequency band, as: 1.6G frequency range and 2.5G frequency range, 1.6G frequency range are 1.56～1.64G, and absolute bandwidth is 0.08G, and relative bandwidth is 5%; 2.5 frequency range is 2.44～2.56G, absolute bandwidth is 0.12GHz, and relative bandwidth is 4.8%.
Owing to adopted the structure and the high-k substrate of L groove part crack array.Therefore the size of entire antenna has obtained further dwindling, and the bandwidth of antenna is improved.
In sum, the present invention adopts the structure of L groove part crack array, realize the variation of high and low frequency by parameter, structure, the number that changes the slit, the excursion of its corresponding adjustable frequency ratio is big, have moderate dimensions, simple in structure, two-frequency operation, bandwidth is big, radiation feature good, be subjected to advantages such as such environmental effects is little, cost is low, easy of integration, can reach the requirement of satellite communication systems such as big-dipper satellite and GPS navigation to antenna.
Description of drawings
Fig. 1 is that the structure of the embodiment of the invention is formed schematic diagram.
Fig. 2 is the main TV structure schematic diagram of the embodiment of the invention.
Fig. 3 is the return loss (S of the embodiment of the invention
11) performance map.In Fig. 2, abscissa is represented frequency Frequency (GHz), and ordinate is represented return loss intensity The return loss.ofthe antenna (dB); Coordinate is a rectangular coordinate in the drawings.
Fig. 4 is the H face directional diagram of the embodiment of the invention.Coordinate is polar coordinates in the drawings.
Fig. 5 is the E face directional diagram of the embodiment of the invention.Coordinate is polar coordinates in the drawings.
Embodiment
The invention will be further described below in conjunction with embodiment and accompanying drawing.
Referring to Fig. 1 and 2, mark 1 is 15.5 ceramic dielectric substrate for dielectric constant among the figure, and it is long to be 50mm, and wide is 25mm, and height is 2.5mm.Upper and lower surface at the ceramic dielectric substrate is covered with the copper layer, and what upper surface had been out the slit covers copper layer 2, long for 46mm, wide be 19mm.Open two pairs of L groove part cracks different in size symmetrically in the upper left corner of covering copper layer 2 and the lower right corner, thereby constituted L groove part crack array, be labeled as 4 among the figure.
The relevant parameter correspondence of L groove part crack array is as follows: this long L groove part stand-off distance that keeps to the side in the upper left corner covers the top of copper layer 2 and the distance on the left side is respectively 4mm ± 0.1mm, 1mm ± 0.1mm.Another of its symmetry long L groove part crack is respectively 1mm ± 0.1mm with the distance of covering both sides, copper layer 2 lower right corner.And the spacing in inside and outside two L groove part cracks on same one side is for 1mm ± 0.1mm.The width in every L groove part crack all is 1mm ± 0.1mm, and the slit horizontal length that it keeps to the side is respectively 14mm ± 0.1mm, 12mm ± 0.1mm with vertical length, and inner slit horizontal length is respectively 10mm ± 0.1mm, 8mm ± 0.1mm with vertical length.The whole lower surface of ceramic dielectric substrate 1 all is covered with the copper layer, as the ground plate of L groove part crack array microstrip antenna, in the drawings be labeled as 5.Mark 3 is the feedback hole among the figure, and it is that radius is 1.5mm ± 0.2mm, highly is 2.5mm ± 0.2mm, passes the hollow cylinder of ceramic dielectric substrate.Adopt the form feed of copper axis offset-fed among the present invention, this feed form makes the S of antenna
11Lower, gain increases.Wherein the inner core of copper axis and the skin sub-miniature A connector by mark among the figure 6 covers copper layer 2 with the ceramic dielectric substrate respectively and links to each other with ground plate 5.
Referring to Fig. 3, as can be seen from Figure 3, working frequency range of the present invention is 1.56～1.64GHz and 2.44～2.56GHz.The return loss (S11) of these two working frequency range internal antennas all-below the 10dB, the minimum echo loss in the 1.6G frequency range is-19.6575dB that the minimum echo loss in the 2.49G frequency range is-31.1689dB.This shows, can both reach requirement in the return loss disposition of whole passband internal antenna.The present invention is respectively 0.08G and 5% in absolute bandwidth and the relative bandwidth of 1.6GHz; Absolute bandwidth and relative bandwidth at 2.49GHz are respectively 0.12GHz and 4.8%, are better than general paster microstrip antenna, can be advantageously applied in the satellite communication systems such as the Big Dipper and GPS.
Referring to Figure 4 and 5, Fig. 4 is E face figure, and Fig. 5 is H face figure.As can be seen from the figure, the present invention has directional radiation properties, can satisfy the requirement of satellite communication system.
Table 1 provides the influence situation of manufacturing mismachining tolerance of the present invention to antenna performance.
Table 1
Annotate: 1. data are existing certain redundant in the table, and certain relevance is arranged between each parameter, and what provide is equalization characteristic, can be according to need.
Manufacturing mismachining tolerance of the present invention is little to the influence of each parameter of antenna in allowed limits.For example, spacing, the size of ceramic dielectric substrate, dielectric-slab copper-clad thickness, the feed position equal error on width, slit and each limit in size, slit are controlled in 2% on the card sheet, and the relative dielectric constant ERROR CONTROL of ceramic dielectric substrate is in 5% the time, and the parameters of antenna changes little.
Claims (10)
1. based on the Big Dipper rectangular ceramic microstrip antenna of gap array, it is characterized in that being provided with substrate and sub-miniature A connector;
The upper surface of described substrate is covered with upper conductor layer, on upper conductor layer, be arranged with L groove part crack array, the L groove part stand-off distance that is located at by the upper conductor layer limit is 0.5～4mm from the upper conductor layer limit, and the spacing in adjacent two L groove part cracks is 0.5～3mm, the width in L groove part crack is 0.5～3mm, and the slit horizontal length in L groove part crack is respectively 2～18mm with vertical length; The lower surface of described substrate is covered with lower conductor layer, and described lower conductor layer is as ground plate; Described sub-miniature A connector links to each other with ground plate with the last conductive layer of substrate respectively.
2. the Big Dipper rectangular ceramic microstrip antenna based on gap array as claimed in claim 1, the length that it is characterized in that described upper conductor layer is 35～55mm, and width is 15～30mm, and the length of lower conductor layer is 40～65mm, and width is 18～35mm.
3. the Big Dipper rectangular ceramic microstrip antenna based on gap array as claimed in claim 1 is characterized in that described upper conductor layer is copper layer or silver layer, and described lower conductor layer is copper layer or silver layer.
4. the Big Dipper rectangular ceramic microstrip antenna based on gap array as claimed in claim 1 is characterized in that the slit horizontal length in described L groove part crack and vertical length are respectively 10～18mm, 8～16mm, and the length overall in L groove part crack is 8～40mm.
5. the Big Dipper rectangular ceramic microstrip antenna based on gap array as claimed in claim 1 is characterized in that the horizontal gap of described L groove part crack array and the angle between the vertical slit are 60～120.。
6. the Big Dipper rectangular ceramic microstrip antenna based on gap array as claimed in claim 1 is characterized in that the substrate of described substrate employing ceramic dielectric.
7. the Big Dipper rectangular ceramic microstrip antenna based on gap array as claimed in claim 6 is characterized in that the relative dielectric constant of described ceramic dielectric substrate is 9～25, is preferably 15.5.
8. as claim 6 or 7 described Big Dipper rectangular ceramic microstrip antennas based on gap array, the length that it is characterized in that described ceramic dielectric substrate is 40～65mm, width is 18～35mm, and thickness is 1～4mm, and described ceramic dielectric substrate is preferably the cuboid of 25mm * 50mm * 2.5mm.
9. the Big Dipper rectangular ceramic microstrip antenna based on gap array as claimed in claim 1 is characterized in that described gap array logarithm is at least 2 pairs.
10. the Big Dipper rectangular ceramic microstrip antenna based on gap array as claimed in claim 1, it is characterized in that this L groove part stand-off distance that keeps to the side in the front, the upper left corner, main cross section of described upper conductor layer is 1～4mm from the top, From Left is 1～4mm, is respectively 1～4mm in the L groove part crack, the lower right corner of the upper left corner, main cross section symmetry and the distance of adjacent side; The spacing in inside and outside two L groove part cracks is 0.5～3mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110040958XA CN102157798B (en) | 2011-02-18 | 2011-02-18 | Beidou rectangular ceramic micro-strip antenna based on slot array |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110040958XA CN102157798B (en) | 2011-02-18 | 2011-02-18 | Beidou rectangular ceramic micro-strip antenna based on slot array |
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| CN102157798A true CN102157798A (en) | 2011-08-17 |
| CN102157798B CN102157798B (en) | 2013-12-04 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401069A (en) * | 2013-08-20 | 2013-11-20 | 厦门大学 | Composite slit leading dual-band and double-fed microstrip antenna with low elevation and high gain |
| CN103633444A (en) * | 2013-11-27 | 2014-03-12 | 厦门大学 | Coupling array microstrip antenna for Beidou navigation system |
| 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 |
| CN107994330A (en) * | 2017-11-10 | 2018-05-04 | 鹤壁天海电子信息系统有限公司 | A kind of UHF/VHF broadband planars printed antenna |
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| US6195049B1 (en) * | 1998-09-11 | 2001-02-27 | Samsung Electronics Co., Ltd. | Micro-strip patch antenna for transceiver |
| CN2653718Y (en) * | 2003-09-04 | 2004-11-03 | 上海大学 | Double frequency bipolar slotted microstrip antenna |
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2011
- 2011-02-18 CN CN201110040958XA patent/CN102157798B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6195049B1 (en) * | 1998-09-11 | 2001-02-27 | Samsung Electronics Co., Ltd. | Micro-strip patch antenna for transceiver |
| CN2653718Y (en) * | 2003-09-04 | 2004-11-03 | 上海大学 | Double frequency bipolar slotted microstrip antenna |
Non-Patent Citations (1)
| Title |
|---|
| ANSARI.J.A.等: "Analysis of pair of L-shaped slot loaded patch antenna for WLAN application", 《POWER, CONTROL AND EMBEDDED SYSTEMS》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401069A (en) * | 2013-08-20 | 2013-11-20 | 厦门大学 | Composite slit leading dual-band and double-fed microstrip antenna with low elevation and high gain |
| CN103633444A (en) * | 2013-11-27 | 2014-03-12 | 厦门大学 | Coupling array microstrip antenna for Beidou navigation system |
| CN103633444B (en) * | 2013-11-27 | 2015-08-19 | 厦门大学 | For the coupling array microstrip antenna of triones navigation system |
| 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 |
| CN107994330A (en) * | 2017-11-10 | 2018-05-04 | 鹤壁天海电子信息系统有限公司 | A kind of UHF/VHF broadband planars printed antenna |
| CN107994330B (en) * | 2017-11-10 | 2020-09-15 | 鹤壁天海电子信息系统有限公司 | UHF/VHF broadband planar printed antenna |
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