CN203787567U - Novel miniaturized low-frequency microwave ceramic dielectric antenna - Google Patents
Novel miniaturized low-frequency microwave ceramic dielectric antenna Download PDFInfo
- Publication number
- CN203787567U CN203787567U CN201420171381.5U CN201420171381U CN203787567U CN 203787567 U CN203787567 U CN 203787567U CN 201420171381 U CN201420171381 U CN 201420171381U CN 203787567 U CN203787567 U CN 203787567U
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- China
- Prior art keywords
- antenna
- ceramic dielectric
- patch
- dielectric body
- frequency microwave
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- 239000000919 ceramic Substances 0.000 title claims abstract description 41
- 239000000523 sample Substances 0.000 claims abstract description 15
- 239000003990 capacitor Substances 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 2
- 238000003854 Surface Print Methods 0.000 claims 1
- 238000004891 communication Methods 0.000 abstract description 5
- 238000010923 batch production Methods 0.000 abstract 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- -1 feeder line Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
Abstract
The utility model relates to a novel miniaturized low-frequency microwave ceramic dielectric antenna, which is characterized in that the antenna adopts a probe feedback mode for feeding, and the lower surface of a ceramic dielectric body is printed with a grounding patch and is in tight contact with a grounding plate; the upper surface of the ceramic dielectric body is printed with an antenna patch; the other surface of the grounding plate is provided with a shielding box; the dielectric constant of the ceramic dielectric body ranges from 8 to 130, and the dielectric loss tand is less than 0.001; and the length of the antenna patch ranges from 24.2mm to 25.8mm. The novel miniaturized low-frequency microwave ceramic dielectric antenna has the advantages of small size, stable performance, low cost, easy batch production, wide application range and the like, and can meet the miniaturization requirements of medium-short distance communication systems.
Description
Technical field
The utility model belongs to radio frequency passive device technical field, relates to a kind of microwave antenna, particularly a kind of Novel miniaturization low frequency microwave ceramic antenna.
Background technology
Along with the development of radio communication and sensor network technique, the wireless transceiver system of short distance high performance-price ratio is widely used and develops.China's Wireless Management Committee is planned 470 MHz～510 MHz to wireless metering frequency range.Owing to having used relatively low frequency, therefore there is better spreadability and good diffraction and transmission capacity, can adapt to various community environments and Changes in weather, stable and reliable operation.Based on advantages such as cost performance are high, reliable and stable, at present, the multiple short-distance and medium-distance systems such as radio meter register, security protection, Smart Home, wireless sensor network extensively adopt this frequency range as wireless communication frequency band.Fast development along with wireless communication system, mobile terminal device presents the volume development trend of miniaturization day by day, antenna is as the important component part of radio-frequency front-end in wireless communication system, except requiring it to there is the property indices such as good efficiency, gain, directivity, also its miniaturization has been proposed to more and more higher requirement.470MHz frequency range belongs to microwave low-frequency range, and the antenna size of using as signal post is just relatively large, the small size antenna of being therefore badly in need of a kind of stable performance that can meet short-distance and medium-distance transmission system needs for.
Utility model content
For the deficiency existing in existing microwave antenna technology, the purpose of this utility model is to provide a kind of technical scheme of Novel miniaturization low-frequency microwave ceramic dielectric antenna.
Described a kind of Novel miniaturization low-frequency microwave ceramic dielectric antenna, is characterized in that comprising ceramic dielectric body, ground plate, shielding box, antenna patch, feed circle, raceway groove, ground patch, short circuit arm, patch capacitor, feeder line, probe and probe aperture;
Ceramic dielectric body is fixed on ground plate, the lower surface of ceramic dielectric body printing ground patch and with ground plate close contact;
The upper surface printed antenna paster of ceramic dielectric body, long limit one side of ceramic dielectric body has short circuit arm, probe is by the feed-in of the antenna back side, be connected with feed circle, a raceway groove is set between feed circle and antenna patch, a patch capacitor that becomes miter angle with length of antenna limit is installed on raceway groove, feed circle is connected with antenna patch;
The another side of ground plate is installed shielding box, and one end perforate of shielding box, connects feeder, and ground plate both sides have installing hole.
Described a kind of Novel miniaturization low-frequency microwave ceramic dielectric antenna, the dielectric constant that it is characterized in that ceramic dielectric body is 8-130, dielectric loss tand<0.001.
Described a kind of Novel miniaturization low-frequency microwave ceramic dielectric antenna, is characterized in that antenna patch length range is 24.2mm-25.8mm, and corresponding antenna resonant frequency scope is 480.5MHz-469.5MHz.
The formula system of the utility model ceramic medium material is: MgO-SiO
2-AL
2o
3or MgO-CaO-Nb
2o
5-TiO
2-NiO or ZrSnTiO
4+ ZnO or CaO-ZnO-Nb
2o
5-Sm
2o
3-AI
2o
3-TiO
2or BaO-SrO-Sm
2o
3-TiO
2or Li
2o-BaO-CaO-Sm
2o
3-TiO
2.
Advantage of the present utility model:
1, solved the miniaturization issues of low frequency microwave reception antenna in 470MHz band limits, for mobile device or personal portable provide, volume is little, the small size antenna of stable performance;
2, with low cost, simple in structure, easily manufactured, all parts all can adopt mold large-scale production;
3, easy for installation, can change as required shape, size and the position of ground plate fixing hole, by screw, can install, both can level installing also can at right angle setting;
4, utilize the antenna that the utility model is manufactured can pass through the resonance frequency of the length adjustment antenna of change antenna patch, thereby change the centre frequency of antenna; Standing-wave ratio: < 1.5; Efficiency: 30%; Gain: 0.02dB.
Accompanying drawing explanation
Fig. 1 is structural representation one of the present utility model;
Fig. 2 is structural representation two of the present utility model;
Fig. 3 is structural representation three of the present utility model;
Wherein: ceramic dielectric body 1, ground plate 2, shielding box 3, antenna patch 4, feed circle 5, raceway groove 6, ground patch 7, short circuit arm 8, patch capacitor 9, feeder line 10, probe 11, probe aperture 12.
Embodiment
Now, in conjunction with Figure of description, the utility model example is described in detail:
A Novel miniaturization low-frequency microwave ceramic dielectric antenna, Fig. 1-3rd, structural representation of the present utility model.As can be seen from the figure, the utility model comprises ceramic dielectric body 1, ground plate 2, shielding box 3, antenna patch 4, feed circle 5, raceway groove 6, ground patch 7, short circuit arm 8, patch capacitor 9, feeder line 10, probe 11 and probe aperture 12, and antenna adopts the mode of probe back of the body feedback to carry out feed.Ceramic dielectric body 1 size: 45 * 14 * 5mm(length * wide * height), ceramic dielectric body 1 relative dielectric constant is 21.5, and material prescription system is MgO-CaO-Nb
2o
5-TiO
2-NiO; Antenna patch 4 is printed on the upper surface of ceramic dielectric body 1, antenna patch 4 sizes: 40 * 13mm(is long * wide), two long limits of antenna patch 4 and minor face are 0.5mm to the distance at ceramic dielectric body 1 edge, antenna patch 4 another minor faces are 5mm to the distance at ceramic dielectric body 1 edge, short circuit arm 8 is printed on the long one side of ceramic dielectric body 1, the width of short circuit arm 8 is 10mm, from antenna patch 4 long limit one sides near feedback point, be shorted to ground patch 7, one side the aliging of one side of short circuit arm 8 and antenna patch 4; Ground patch 7 is printed on the lower surface of ceramic dielectric body 1, and covers whole ceramic dielectric body 1 lower surface completely; Feeding centre point is 7mm with antenna patch 4 broadside distances, and probe aperture 12 diameters are 1.3mm, probe 11 diameter 1.2mm, and feed circle 5 diameter 7.5mm, raceway groove 6 width between feed circle 5 and antenna patch 4 are 1.75mm; Patch capacitor 9 is the patch capacitor of 0603 encapsulation, capacitance 6.8pF, and mounting means is to become miter angle with length of antenna limit; Ground plate 2 is positioned under ceramic dielectric body 1, is close to ground patch 7, and ground plate 2 can change shape and installing hole is set according to actual conditions; Shielding box 3 is welded under ground plate 2, shielding box size: 26 * 11 * 3mm(length * wide * height), be hollow design, make its probe that covers signal feed-in completely 11 positions, a broadside of shielding box 3 is opened the aperture of a diameter 3.5mm, and feeder line 10 is drawn thus; Feeder line 10 is accessed by an antenna short side direction away from distributing point, and length is 130mm.
The utility model ceramic medium antenna resonance frequency becomes with the length of antenna patch: when antenna patch 4 length are during into 24.2mm, the resonance frequency of antenna is 480.5MHz; When antenna patch 4 length are 24.6mm, the resonance frequency of antenna is 478.7MHz; When antenna patch 4 length are 25mm, the resonance frequency of antenna is 476.2MHz; When antenna patch 4 length are 25.4mm, the resonance frequency of antenna is 472MHz; When antenna patch 4 length are 25.8mm, the resonance frequency of antenna is 469.5MHz.Therefore, by changing the length of antenna patch 4, can regulate the resonance frequency of antenna, make it be applicable to different instruments and application.
When the resonance frequency of antenna is 474MHz, corresponding standing-wave ratio is about 1.2, and antenna impedance bandwidth is 6MHz.It is 30% that antenna reaches the highest efficiency at frequency 469MHz place.
Claims (3)
1. a Novel miniaturization low-frequency microwave ceramic dielectric antenna, is characterized in that comprising ceramic dielectric body (1), ground plate (2), shielding box (3), antenna patch (4), feed circle (5), raceway groove (6), ground patch (7), short circuit arm (8), patch capacitor (9), feeder line (10), probe (11) and probe aperture (12);
It is upper that ceramic dielectric body (1) is fixed on ground plate (2), the lower surface printing ground patch (7) of ceramic dielectric body (1) and with ground plate (2) close contact;
The upper surface printed antenna paster (4) of ceramic dielectric body (1), long limit one side of ceramic dielectric body (1) has short circuit arm (8), probe (11) is by the feed-in of the antenna back side, be connected with feed circle (5), between feed circle (5) and antenna patch (4), a raceway groove (6) is set, a patch capacitor (9) that becomes miter angle with length of antenna limit of the upper installation of raceway groove (6), makes feed circle (5) be connected with antenna patch (4);
The another side of ground plate (2) is installed shielding box (3), and one end perforate of shielding box (3), connects feeder (10), and ground plate both sides have installing hole.
2. a kind of Novel miniaturization low-frequency microwave ceramic dielectric antenna according to claim 1, the dielectric constant that it is characterized in that ceramic dielectric body (1) is 8-130, dielectric loss tand<0.001.
3. a kind of Novel miniaturization low-frequency microwave ceramic dielectric antenna according to claim 1, is characterized in that antenna patch (4) length range is 24.2mm-25.8mm, and corresponding antenna resonant frequency scope is 480.5MHz-469.5MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420171381.5U CN203787567U (en) | 2014-04-10 | 2014-04-10 | Novel miniaturized low-frequency microwave ceramic dielectric antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420171381.5U CN203787567U (en) | 2014-04-10 | 2014-04-10 | Novel miniaturized low-frequency microwave ceramic dielectric antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203787567U true CN203787567U (en) | 2014-08-20 |
Family
ID=51323722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420171381.5U Expired - Lifetime CN203787567U (en) | 2014-04-10 | 2014-04-10 | Novel miniaturized low-frequency microwave ceramic dielectric antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203787567U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109103562A (en) * | 2018-07-13 | 2018-12-28 | 安徽蓝煜电子科技有限公司 | A kind of diectric antenna |
-
2014
- 2014-04-10 CN CN201420171381.5U patent/CN203787567U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109103562A (en) * | 2018-07-13 | 2018-12-28 | 安徽蓝煜电子科技有限公司 | A kind of diectric antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140820 |