CN104078764B - A kind of ultra broadband low-frequency range deformation PIFA for being applied to body area network - Google Patents
A kind of ultra broadband low-frequency range deformation PIFA for being applied to body area network Download PDFInfo
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- CN104078764B CN104078764B CN201410220345.8A CN201410220345A CN104078764B CN 104078764 B CN104078764 B CN 104078764B CN 201410220345 A CN201410220345 A CN 201410220345A CN 104078764 B CN104078764 B CN 104078764B
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- feed tab
- area network
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- PEZNEXFPRSOYPL-UHFFFAOYSA-N (bis(trifluoroacetoxy)iodo)benzene Chemical compound FC(F)(F)C(=O)OI(OC(=O)C(F)(F)F)C1=CC=CC=C1 PEZNEXFPRSOYPL-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 230000005855 radiation Effects 0.000 claims abstract description 26
- 238000005452 bending Methods 0.000 claims abstract description 10
- 241000826860 Trapezium Species 0.000 claims description 3
- 238000004891 communication Methods 0.000 abstract description 3
- 230000005404 monopole Effects 0.000 description 6
- 239000004020 conductor Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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Abstract
The invention discloses a kind of ultra broadband low-frequency range deformation PIFA for being applied to body area network, including antenna radiation unit, floor, feed tab and SMA antenna terminals, wherein antenna radiation unit includes radiation fin and short-circuit piece, radiation fin is connected by short-circuit piece with the one end on floor, it is connected with radiation fin at the top of feed tab, feed tab bottom is connected with SMA antenna terminal inner wires, and the other end on floor forms bending segment.The present invention PIFA, with small volume, feeding classification is simple the features such as, it is adaptable to human body local area network is the communication of body area network.
Description
Technical field
The present invention relates to the body area network communications field, more particularly to a kind of ultra broadband low-frequency range deformation for being applied to body area network
PIFA。
Background technology
At present, it has been suggested that the ultra-wideband antenna for wireless body area network, volume is bigger than normal, easily by the shadow of human body lossy dielectric
Ring.As radiation of the planar inverted-F antenna (Planar Inverted-F Antenna, PIFA) to human body is reduced, and then than absorbing
Rate is low, so someone devises the planar inverted-F antenna for human body communication.But, these planar inverted-F antenna complex structures, its
Manufacture difficulty is big.
In general, planar inverted-F antenna can classify as monopole antenna, Fig. 1, Fig. 2, Fig. 3 sets forth three kinds of lists
Differentiation of the pole sub-antenna to planar inverted-F antenna：The first be by line monopole bend after and left side addition inverted L-shaped conductor wire connect
Realize plane inverse-F structure, finally can bending conductor wire to expand be plane increasing antenna band；Second is micro-strip day
Line, realizes plane inverse-F structure in feeder line homonymy addition conductor wire ground connection after being bent；The third is that top board loads one pole sub-line
Antenna, realizes plane inverse-F structure in top board side addition conductive plane ground connection.In design process, antenna left end addition short-circuit piece
Equivalent to inductance is introduced in the antiresonant circuit formed in antenna, right side is offset as monopole antenna bends the electricity introduced
Hold.
The content of the invention
It is an object of the invention to overcome the shortcoming and deficiency of prior art, there is provided a kind of ultra broadband for being applied to body area network
Low-frequency range deforms PIFA, and its size is less.
The purpose of the present invention is realized by following technical scheme：
It is a kind of be applied to body area network ultra broadband low-frequency range deformation PIFA, including antenna radiation unit, floor, feed tab and
SMA (Sub-Miniature-A) antenna terminal, wherein antenna radiation unit include radiation fin and short-circuit piece, radiation fin and floor
One end connected by short-circuit piece, be connected with radiation fin at the top of feed tab, feed tab bottom and SMA antenna terminals inner wire connect
Connect, the other end on floor forms bending segment.
Described radiation fin is shaped as right-angled trapezium, length L at upper bottomt1For 7mm, length L gone to the bottomt2For 3mm, waist
Length L be 13mm.
The height h of described short-circuit piece is 5.5mm～6mm, width wsFor 5mm；The width w of feed tabfFor 7mm；Feed tab
The distance between bottom and floor hfFor 1mm；The distance between short-circuit piece and feed tab d is 5mm；Length L on floorgFor 60mm,
Width WgFor 22mm, the height h of floor bending segmentgFor 7mm, length LcFor 17mm.When the height h of short-circuit piece is 5.5mm, with S11
≤ -10dB be standard, antenna cover 1.5GHz frequency ranges (3.5～5GHz)；And h is when being 6mm, antenna covers with a width of 3.1～
4.9GHz, common 1.7GHz frequency ranges；Although continuing to increase h, the beamwidth of antenna somewhat increases, and h covers required frequency by being set to 6mm
Band.The distance between short-circuit piece and feed tab d affects the depth of antenna reflection coefficient.D is selected to be that then antenna can for 5mm after optimization
3.1～4.9GHz frequency bands required for covering.
The present invention compared with prior art, has the advantage that and beneficial effect：
1st, hypotenuse top board technology is present invention employs, impedance matching is realized, and then is widened frequency range, then using bending floor side
Formula causes antenna to cover the ultra broadband low-frequency range of 3.1～4.9GHz well.
2nd, after the present invention adopts hypotenuse top board technology and folding floor, planar inverted-F antenna covers 3.1 in free space～
4.6GHz and on human body cover 3.4～4.6GHz (reflection coefficient S11≤-10dB).Due to the impact of human body, antenna is in human body
On performance it is more somewhat poorer than free space performance, it is but still acceptable so that the planar inverted-F antenna is suitable for body area network system
System.
3rd, the present invention considers the loss problem of baseplate material, DIELECTRIC CONSTANT εrThe air of=1 and electrical loss angle tan δ ≈ 0
The medium being used as between chilled ceiling panel paster and floor, and the air gap may also be used for install other electronic equipments；Antenna
Feed tab and floor are coplanar and there is therebetween certain feed port, thus when making sub-miniature A connector inner wire directly with feedback
Electric piece is mutually welded, and outer conductor is then mutually ined succession with floor welded, avoids the problem in floor drilling.
Description of the drawings
Fig. 1 develops schematic diagram for the first monopole antenna；
Fig. 2 is that second monopole antenna develops schematic diagram；
Fig. 3 develops schematic diagram for the third monopole antenna；
Fig. 4 is the structural representation that the ultra broadband low-frequency range for being applied to body area network of the present invention deforms PIFA；
Fig. 5 is the partial enlarged drawing that the dotted line circle of deformation PIFA described in Fig. 4 lives part；
Fig. 6 is the dimensional parameters schematic diagram for deforming PIFA described in Fig. 4.
Specific embodiment
With reference to embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited
In this.
Such as Fig. 4,5, a kind of ultra broadband low-frequency range deformation PIFA for being applied to body area network, including antenna radiation unit, floor
1st, feed tab 2 and SMA antenna terminals 4, wherein antenna radiation unit include radiation fin 5 and short-circuit piece 6, radiation fin 5 and floor 1
One end is connected by short-circuit piece 6, is connected with radiation fin 5 at the top of feed tab 2, and 2 bottom of feed tab is interior with SMA antenna terminals 4
Conductor 3 connects, and the other end on floor 1 forms bending segment 7, and the bending segment 7 is folded upward at by the other end on floor 1 and curved to the left
Folding；Wherein 4 connecting coaxial cable of SMA antenna terminals, the signal output that PIFA is received；The short-circuit piece of radiating element is single with feed
The sub-miniature A connector of unit is located at the same edge on floor, and short-circuit piece is connected to the same edge of radiation patch with feed tab, bends floor
Edge and the floor edge that is connected of feed sub-miniature A connector opposite side each other, short-circuit piece width and position can be adjusted, two on antenna floor
Any unit is not connected compared with two long opposite sides, it is conformal with human body that antenna can bend realization in wearing.
Such as Fig. 6, described radiation fin is shaped as right-angled trapezium, length L at upper bottomt1For 7mm, length L gone to the bottomt2For
3mm, length L of waist is 13mm；
Such as Fig. 6, the height h of described short-circuit piece is 5.5mm～6mm, width wsFor 5mm；The width w of feed tabfFor 7mm；
The distance between feed tab bottom and floor hfFor 1mm；The distance between short-circuit piece and feed tab d is 5mm；Length L on floorg
For 60mm, width WgFor 22mm, the height h of floor bending segmentgFor 7mm, length LcFor 17mm.The height h of short-circuit piece is 5.5mm
When, with S11≤ -10dB be standard, antenna cover 1.5GHz frequency ranges (3.5～5GHz)；And h be 6mm when, antenna cover with a width of
3.1～4.9GHz, common 1.7GHz frequency ranges；Although continuing to increase h, the beamwidth of antenna somewhat increases, and h is covered by being set to 6mm
Required frequency band.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention not by above-described embodiment
Limit, other any spirit without departing from the present invention and the change, modification, replacement made under principle, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (3)
1. a kind of ultra broadband low-frequency range for being applied to body area network deforms PIFA, it is characterised in that：Including antenna radiation unit,
Plate, feed tab and SMA antenna terminals, wherein antenna radiation unit include the one end on radiation fin and short-circuit piece, radiation fin and floor
Connected by short-circuit piece, be connected with radiation fin at the top of feed tab, feed tab bottom is connected with SMA antenna terminal inner wires, ground
The other end of plate forms bending segment；The short-circuit piece of radiating element is located at the same edge on floor with the sub-miniature A connector of feed element, short
Road piece is connected to the same edge of radiation patch with feed tab, bends the floor edge that floor edge is connected with feed sub-miniature A connector
Opposite side each other, short-circuit piece width and position can be adjusted, and on antenna floor, two do not connect any unit compared with two long opposite sides, and antenna exists
Realization can be bent during wearing conformal with human body.
2. the ultra broadband low-frequency range for being applied to body area network according to claim 1 deforms PIFA, it is characterised in that：Described
Radiation fin is shaped as right-angled trapezium, length L at upper bottomt1For 7mm, length L gone to the bottomt2For 3mm, length L of waist is 13mm.
3. the ultra broadband low-frequency range for being applied to body area network according to claim 1 deforms PIFA, it is characterised in that：Described
The height h of short-circuit piece is 5.5mm～6mm, width wsFor 5mm；The width w of feed tabfFor 7mm；Between feed tab bottom and floor
Apart from hfFor 1mm；The distance between short-circuit piece and feed tab d is 5mm；Length L on floorgFor 60mm, width WgFor 22mm,
The height h of floor bending segmentgFor 7mm, length LcFor 17mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410220345.8A CN104078764B (en) | 2014-05-22 | 2014-05-22 | A kind of ultra broadband low-frequency range deformation PIFA for being applied to body area network |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410220345.8A CN104078764B (en) | 2014-05-22 | 2014-05-22 | A kind of ultra broadband low-frequency range deformation PIFA for being applied to body area network |
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| CN104078764A CN104078764A (en) | 2014-10-01 |
| CN104078764B true CN104078764B (en) | 2017-04-05 |
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| CN201410220345.8A Expired - Fee Related CN104078764B (en) | 2014-05-22 | 2014-05-22 | A kind of ultra broadband low-frequency range deformation PIFA for being applied to body area network |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106910989A (en) * | 2017-01-22 | 2017-06-30 | 深圳市景程信息科技有限公司 | Folding double frequency section antenna |
| CN108682944B (en) * | 2018-05-02 | 2020-11-13 | 电子科技大学 | Miniaturized low-profile ultra-wideband log-periodic monopole array antenna |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1742406A (en) * | 2002-10-10 | 2006-03-01 | 圣韵无线技术公司 | Narrow width dual/tri ISM band PIFA for wireless applications |
| CN102195142A (en) * | 2010-03-17 | 2011-09-21 | 西门子公司 | Planar antenna system |
| CN203942027U (en) * | 2014-05-22 | 2014-11-12 | 华南理工大学 | A kind of ultra broadband low-frequency range distortion PIFA that is applied to body area network |
-
2014
- 2014-05-22 CN CN201410220345.8A patent/CN104078764B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1742406A (en) * | 2002-10-10 | 2006-03-01 | 圣韵无线技术公司 | Narrow width dual/tri ISM band PIFA for wireless applications |
| CN102195142A (en) * | 2010-03-17 | 2011-09-21 | 西门子公司 | Planar antenna system |
| CN203942027U (en) * | 2014-05-22 | 2014-11-12 | 华南理工大学 | A kind of ultra broadband low-frequency range distortion PIFA that is applied to body area network |
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| CN104078764A (en) | 2014-10-01 |
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Granted publication date: 20170405 |