CN103887610B - A kind of wideband microstrip PIFA antenna - Google Patents
A kind of wideband microstrip PIFA antenna Download PDFInfo
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- CN103887610B CN103887610B CN201410100525.2A CN201410100525A CN103887610B CN 103887610 B CN103887610 B CN 103887610B CN 201410100525 A CN201410100525 A CN 201410100525A CN 103887610 B CN103887610 B CN 103887610B
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Abstract
The invention discloses a kind of wideband microstrip PIFA antenna, comprise interdigital capacitor, feed probes, grounding probe, paster, dielectric-slab and radiation patch with sub-miniature A connector; Wherein, radiation patch is arranged on the upper surface of dielectric-slab, and it comprises the radiation branch of the first U-bend song, the radiation branch of the second U-bend song, coupled radiation branch and ground connection sweep, and radiation patch is by interdigital capacitor couple feed; Paster with sub-miniature A connector is arranged on the lower surface of dielectric-slab, it comprise floor fluting and sub-miniature A connector, and sub-miniature A connector by feed probes to radiation patch feed; Grounding probe is by the ground connection sweep of via hole connecting media plate upper surface in dielectric-slab and the paster with sub-miniature A connector of dielectric-slab lower surface.Wideband microstrip PIFA antenna of the present invention, it adopts the way of realization of microstrip line, utilizes interdigital capacitor couple feed, floor grooving techniques, and overcome the shortcoming of existing PIFA antenna, have light structure, volume is little, and cost is low, is easy to process and integrated advantage.
Description
[technical field]
The present invention relates to wireless antenna technical field, particularly a kind of wideband microstrip PIFA antenna.
[background technology]
PIFA antenna is widely used in the built-in aerial of mobile terminal of mobile telephone, and antenna is generally made up of conductor patch, grounding probe, feed probes.Current PIFA antenna covers three frequency ranges at the most, the height of antenna is at least not less than 6mm, with the least possible supporter between radiating side and ground strip, therefore PIFA antenna is required further improvement, be in particular in the following aspects: 1, section is high, do not utilize and be applied in mobile phone terminal ultra-thin at present; 2. frequency band is narrower, cannot meet the requirement of 3G/4G system high-speed upload and download; 3, this structure by short circuit face supportive conductors paster, is unfavorable for large-scale integrated and processing.
[summary of the invention]
The object of the invention is to overcome above-mentioned defect, provide a kind of wideband microstrip PIFA antenna, this antenna reduces section height, has widened frequency band range, and is conducive to integrated and processing.
For achieving the above object, the present invention realizes by the following technical solutions:
A kind of wideband microstrip PIFA antenna, comprises interdigital capacitor, feed probes, grounding probe, paster, dielectric-slab and radiation patch with sub-miniature A connector; Wherein, radiation patch is arranged on the upper surface of dielectric-slab, and it comprises the radiation branch of the first U-bend song, the radiation branch of the second U-bend song, coupled radiation branch and ground connection sweep, and radiation patch is by interdigital capacitor couple feed;
Paster with sub-miniature A connector is arranged on the lower surface of dielectric-slab, it comprise floor fluting and sub-miniature A connector, and sub-miniature A connector by feed probes to radiation patch feed;
Grounding probe is by the ground connection sweep of via hole connecting media plate upper surface in dielectric-slab and the paster with sub-miniature A connector of dielectric-slab lower surface.
The present invention improves further and is, radiation patch and the paster with sub-miniature A connector all adopt copper material to make, and its copper layer thickness is 18 μm ~ 36 μm.
The present invention improves further and is, the length of the radiation branch of the first U-bend song is 34mm ~ 35mm, and width is 0.7mm ~ 1mm, and the length of the radiation branch of the second U-bend song is 50mm ~ 54mm, and width is 0.5mm ~ 0.7mm.
The present invention improves further and is, structure is rectangle in coupled radiation branch, and its length is 26mm ~ 27mm, and width is 0.5mm ~ 0.7mm.
The present invention improves further and is, interdigital capacitor comprise 5 interdigital, the interdigital length of each root is 4.5mm ~ 4.6mm, and width is 0.2mm ~ 0.3mm, and be connected two interdigital between gap be 0.2mm ~ 0.3mm.
The present invention improves further and is, ground connection sweep length is 45mm ~ 46mm, and width is 0.5mm ~ 0.6mm.
The present invention improves further and is, the length of floor fluting is 32mm ~ 33mm, and width is 4mm ~ 4.5mm; The internal diameter of sub-miniature A connector is 0.8mm.
The present invention improves further and is, the dielectric constant of dielectric-slab is 4.4 ~ 4.6, its thickness is 0.8mm ~ 1mm, length is 95mm ~ 100mm, the width of dielectric-slab is 0.23 ~ 0.25 times of center of antenna frequency wavelength in atmosphere, and grounding probe and feed probes are arranged on dielectric-slab one end near antenna.
The present invention improves further and is, when radiation patch is placed upward, and radiation patch is when being positioned at the left end of whole dielectric-slab, the distance on the left of grounding probe and dielectric-slab between minor face is 10.5mm ~ 11mm, and the distance on the downside of dielectric-slab between long limit is 21mm ~ 22mm.
The present invention improves further and is, when radiation patch is placed upward, and radiation patch is when being positioned at the left end of whole dielectric-slab, distance on the left of feed probes and dielectric-slab between minor face is 10.5mm ~ 11mm, and the distance on the downside of dielectric-slab between long limit is 27mm ~ 28mm, feed probes overlaps with the inner core position of sub-miniature A connector.
The present invention compared with prior art, has following useful technique effect:
1, wideband microstrip PIFA antenna provided by the invention, it adopts the way of realization of microstrip line, utilizes interdigital capacitor couple feed, floor grooving techniques, overcome the shortcoming of existing PIFA antenna, have light structure, volume is little, lightweight, cost is low, is easy to process and integrated advantage.
2, wideband microstrip PIFA antenna provided by the invention, performance also has following useful effect: traditional PIFA antenna, bandwidth is subject to the impact of antenna height to a great extent, compare existing three frequency PIFA antennas, wideband microstrip PIFA antenna provided by the invention is on former chlamydate basis, cover again LTE (test), Bluetooth/WiFi, ISM wave band, amount to six frequency ranges.
[accompanying drawing explanation]
Fig. 1 is the stereogram of wideband microstrip PIFA antenna;
Fig. 2 is the vertical view of wideband microstrip PIFA antenna;
Fig. 3 is the interdigital capacitor partial enlarged drawing of wideband microstrip PIFA antenna;
Fig. 4 is the left view of wideband microstrip PIFA antenna;
Wherein: 1 is the bent radiation branch of the first U-bend, 2 is the bent radiation branch of the second U-bend, and 3 is coupled radiation branch, and 4 is interdigital capacitor, 5 is feed probes, 6 is grounding probe, and 7 is ground connection sweep, and 8 is the paster being with sub-miniature A connector, 9 is floor fluting, 10 is dielectric-slab, and 11 is radiation patch, and 12 is sub-miniature A connector.
[embodiment]
Elaborate to the present invention below in conjunction with accompanying drawing, the explanation of the invention is not limited.
See Fig. 1 to Fig. 4, a kind of wideband microstrip PIFA of the present invention antenna, comprises interdigital capacitor 4, feed probes 5, grounding probe 6, paster 8, dielectric-slab 10 and radiation patch 11 with sub-miniature A connector.
Wherein, radiation patch 11 is arranged on the upper surface of dielectric-slab 10, paint technique by light after covering copper by dielectric-slab 10 to corrode on Copper Foil and form, the thickness of Copper Foil is 18 μm ~ 36 μm, be divided into the radiation branch 2 of radiation branch 1, the second U-bend song of the first U-bend song, coupled radiation branch 3 and ground connection sweep 7, and radiation patch 11 is by interdigital capacitor 4 couple feed.
Further, the length of the radiation branch 1 of the first U-bend song is 34mm ~ 35mm, and width is 0.7mm ~ 1mm, and the length of the radiation branch 2 of the second U-bend song is 50mm ~ 54mm, and width is 0.5mm ~ 0.7mm.Structure is rectangle in coupled radiation branch 3, and its length is 26mm ~ 27mm, and width is 0.5mm ~ 0.7mm, and the present invention, by adding coupled radiation branch 3, introduces one section of new resonance frequency, widened the frequency band of antenna.Interdigital capacitor 4 comprise 5 interdigital, the interdigital length of each root is 4.5mm ~ 4.6mm, width is 0.2mm ~ 0.3mm, and be connected two interdigital between gap be 0.2mm ~ 0.3mm, the introducing of interdigital capacitor 4 changes the distributed capacitance of radiation patch 11, improve the input impedance of antenna, antenna is mated with feed better, widen the beamwidth of antenna simultaneously.Ground connection sweep 7 length is 45mm ~ 46mm, and width is 0.5mm ~ 0.6mm; Grounding probe height due to conventional PIFA antenna affects the bandwidth of antenna, therefore adopts the ground connection sweep 7 of this kind of micro-band forms, while increase length, can not affect the section height of whole antenna, achieve the miniaturization of antenna.
Paster 8 with sub-miniature A connector is arranged on the lower surface of dielectric-slab 10, is to paint technique by light after covering copper by dielectric-slab 10 to corrode on Copper Foil and form, and the thickness of Copper Foil is 18 μm ~ 36 μm; Paster 8 with sub-miniature A connector comprises floor fluting 9 and sub-miniature A connector 12, and sub-miniature A connector 12 gives radiation patch 11 feed by feed probes 5.Away from antenna end, floor grooving techniques is utilized to introduce new frequency band along dielectric-slab 10 minor face; The length of floor fluting 9 is 32mm ~ 33mm, and width is 4mm ~ 4.5mm; The internal diameter of sub-miniature A connector 12 is 0.8mm.
Grounding probe 6 is by the ground connection sweep 7 of via hole connecting media plate 10 upper surface in dielectric-slab 10 and the paster 8 with sub-miniature A connector of dielectric-slab 10 lower surface.
In addition, the dielectric constant of dielectric-slab 10 is 4.4 ~ 4.6, and its thickness is 0.8mm ~ 1mm, and length is 95mm ~ 100mm, the width of dielectric-slab 10 is 0.23 ~ 0.25 times of center of antenna frequency wavelength in atmosphere, and grounding probe 6 and feed probes 5 are arranged on dielectric-slab 10 one end near antenna.
When radiation patch 11 is placed upward, and when radiation patch 11 is positioned at the left end of whole dielectric-slab 10, the distance on the left of grounding probe 6 and dielectric-slab 10 between minor face is 10.5mm ~ 11mm, and the distance on the downside of dielectric-slab 10 between long limit is 21mm ~ 22mm.
When radiation patch 11 is placed upward, and radiation patch 11 is when being positioned at the left end of whole dielectric-slab 10, distance on the left of feed probes 5 and dielectric-slab 10 between minor face is 10.5mm ~ 11mm, and the distance on the downside of dielectric-slab 10 between long limit is 27mm ~ 28mm, feed probes 5 overlaps with the inner core position of sub-miniature A connector 12.
Above content is in conjunction with concrete preferred implementation further description made for the present invention; can not assert that the specific embodiment of the present invention is only limitted to this; for general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; some simple deduction or replace can also be made, all should be considered as belonging to the present invention by submitted to claims determination scope of patent protection.
Claims (9)
1. a wideband microstrip PIFA antenna, it is characterized in that, comprise interdigital capacitor (4), feed probes (5), grounding probe (6), paster (8), dielectric-slab (10) and radiation patch (11) with sub-miniature A connector; Wherein, radiation patch (11) is arranged on the upper surface of dielectric-slab (10), it comprises the radiation branch (1) of the first U-bend song, the radiation branch (2) of the second U-bend song, coupled radiation branch (3) and ground connection sweep (7), and radiation patch (11) is by interdigital capacitor (4) couple feed;
Paster (8) with sub-miniature A connector is arranged on the lower surface of dielectric-slab (10), it comprise floor fluting (9) and sub-miniature A connector (12), and sub-miniature A connector (12) by feed probes (5) to radiation patch (11) feed;
The ground connection sweep (7) of grounding probe (6) by via hole connecting media plate (10) upper surface in dielectric-slab (10) and the paster with sub-miniature A connector (8) of dielectric-slab (10) lower surface;
The length of the radiation branch (1) of the first U-bend song is 34mm ~ 35mm, and width is 0.7mm ~ 1mm, and the length of the radiation branch (2) of the second U-bend song is 50mm ~ 54mm, and width is 0.5mm ~ 0.7mm.
2. a kind of wideband microstrip PIFA antenna according to claim 1, is characterized in that, radiation patch (11) and the paster (8) with sub-miniature A connector all adopt copper material to make, and its copper layer thickness is 18 μm ~ 36 μm.
3. a kind of wideband microstrip PIFA antenna according to claim 1, it is characterized in that, structure is rectangle in coupled radiation branch (3), and its length is 26mm ~ 27mm, and width is 0.5mm ~ 0.7mm.
4. a kind of wideband microstrip PIFA antenna according to claim 1, it is characterized in that, interdigital capacitor (4) comprise 5 interdigital, the interdigital length of each root is 4.5mm ~ 4.6mm, width is 0.2mm ~ 0.3mm, and be connected two interdigital between gap be 0.2mm ~ 0.3mm.
5. a kind of wideband microstrip PIFA antenna according to claim 1, it is characterized in that, ground connection sweep (7) length is 45mm ~ 46mm, and width is 0.5mm ~ 0.6mm.
6. a kind of wideband microstrip PIFA antenna according to claim 1, is characterized in that, the length on floor fluting (9) is 32mm ~ 33mm, and width is 4mm ~ 4.5mm; The internal diameter of sub-miniature A connector (12) is 0.8mm.
7. a kind of wideband microstrip PIFA antenna according to claim 1, it is characterized in that, the dielectric constant of dielectric-slab (10) is 4.4 ~ 4.6, its thickness is 0.8mm ~ 1mm, length is 95mm ~ 100mm, the width of dielectric-slab (10) is 0.23 ~ 0.25 times of center of antenna frequency wavelength in atmosphere, and grounding probe (6) and feed probes (5) are arranged on dielectric-slab (10) one end near antenna.
8. a kind of wideband microstrip PIFA antenna according to claim 1, it is characterized in that, when radiation patch (11) is placed upward, and radiation patch (11) is when being positioned at the left end of whole dielectric-slab (10), distance between grounding probe (6) and dielectric-slab (10) left side minor face is 10.5mm ~ 11mm, and the distance between long limit, dielectric-slab (10) downside is 21mm ~ 22mm.
9. a kind of wideband microstrip PIFA antenna according to claim 1, it is characterized in that, when radiation patch (11) is placed upward, and radiation patch (11) is when being positioned at the left end of whole dielectric-slab (10), distance between feed probes (5) and dielectric-slab (10) left side minor face is 10.5mm ~ 11mm, and the distance between long limit, dielectric-slab (10) downside is 27mm ~ 28mm, and feed probes (5) overlaps with the inner core position of sub-miniature A connector (12).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410100525.2A CN103887610B (en) | 2014-03-18 | 2014-03-18 | A kind of wideband microstrip PIFA antenna |
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| CN201410100525.2A CN103887610B (en) | 2014-03-18 | 2014-03-18 | A kind of wideband microstrip PIFA antenna |
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| CN103887610A CN103887610A (en) | 2014-06-25 |
| CN103887610B true CN103887610B (en) | 2016-03-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106602276A (en) * | 2016-11-30 | 2017-04-26 | 中国铁塔股份有限公司长春市分公司 | WLAN (wireless local area network) antenna |
| CN206673106U (en) * | 2017-04-07 | 2017-11-24 | 深圳市景程信息科技有限公司 | Minimize the Ax-shaped bimodulus monopole antenna of restructural |
| CN107887692A (en) * | 2017-10-27 | 2018-04-06 | 苏州景昱医疗器械有限公司 | The Implanted medical system of microstrip antenna and the application antenna |
| CN109540348A (en) * | 2018-11-19 | 2019-03-29 | 南京邮电大学 | A kind of stress measurement sensor based on spring antenna |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1387281A (en) * | 2001-05-17 | 2002-12-25 | 菲尔特朗尼克Lk有限公司 | Multiband antenna |
| CN201749938U (en) * | 2009-08-17 | 2011-02-16 | 三星电子株式会社 | Multi-band built-in antenna device of portable terminal |
| CN102104199A (en) * | 2010-10-28 | 2011-06-22 | 华南理工大学 | Zero resonance unit-loaded broadband planar inverted-F antenna |
| US20120007782A1 (en) * | 2010-07-06 | 2012-01-12 | Kabushiki Kaisha Toshiba | Antenna apparatus and a wireless communication apparatus |
-
2014
- 2014-03-18 CN CN201410100525.2A patent/CN103887610B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1387281A (en) * | 2001-05-17 | 2002-12-25 | 菲尔特朗尼克Lk有限公司 | Multiband antenna |
| CN201749938U (en) * | 2009-08-17 | 2011-02-16 | 三星电子株式会社 | Multi-band built-in antenna device of portable terminal |
| US20120007782A1 (en) * | 2010-07-06 | 2012-01-12 | Kabushiki Kaisha Toshiba | Antenna apparatus and a wireless communication apparatus |
| CN102104199A (en) * | 2010-10-28 | 2011-06-22 | 华南理工大学 | Zero resonance unit-loaded broadband planar inverted-F antenna |
Non-Patent Citations (1)
| Title |
|---|
| 《Novel Miniaturized PIFA with Interdigital Coupling Feed for Multiband Operation》;Ding-Bing Lin等;《ICWITS 2010 IEEE》;20100903;1-4 * |
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