CN108742643A - A ultra-wideband antenna suitable for human blood glucose concentration detection - Google Patents
A ultra-wideband antenna suitable for human blood glucose concentration detection Download PDFInfo
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- CN108742643A CN108742643A CN201810588305.7A CN201810588305A CN108742643A CN 108742643 A CN108742643 A CN 108742643A CN 201810588305 A CN201810588305 A CN 201810588305A CN 108742643 A CN108742643 A CN 108742643A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/14532—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue for measuring glucose, e.g. by tissue impedance measurement
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Abstract
The present invention relates to a ultra-wideband antennas suitable for human blood glucose concentration detection, for the planar structure that is printed on one side, it is printed on the substrate of 20mm × 20mm × 1.6mm, its metal layer includes radiation sheet metal and earth plate two parts, it is characterized in that, radiation sheet metal is symmetrical structure, its periphery is the rectangle metal frame of a bottom then feed line, in rectangular top-slitting, notch both ends, to metal frame inner recess, are connected into two right-angled trapeziums vis-a-vis by the metal strip of two squares；In the two trapezoidal intermediate clear areas for forming the isosceles trapezoid shape that one is fallen, the metal patch of the isosceles trapezoid of scaled down is added wherein；The specific size of radiation sheet metal is obtained by emulation.The present invention has stable working characteristics in ultra wide band working band, can effectively emit and receive high-frequency signal.
Description
Technical field
The present invention relates to a ultra-wideband antennas suitable for human blood glucose concentration detection.
Background technology
Currently, the number of diabetic is growing, the monitoring for carrying out blood glucose level is most important.And it is existing
The non-exempt from customs examination patient of many noninvasive and minimally invasive method brings the pressure of pain and spirit on body, increases the wind of infection
Danger.A kind of highly desirable method birth of accurately Non-invasive detection blood glucose of people.
With quickly growing for modern wireless communication technique, signal band resource tends to be nervous, growing in order to meet
Military demand and civilian demand, the working band of all kinds of microwave devices gradually widened to high frequency.And ultra wide band (UWB) technology phase
For narrow-band technologies, there is low-power consumption, high-precision, ultra wide band (UWB) skill of many advantages such as high-speed, cheap high-performance
Art has better development space.
As microwave wireless technology is fast-developing, super-broadband tech field applicatory is constantly expanded, such as detects thunder
Reach, material flaw detection, human medical field etc..Lithography techniques make micro-strip paster antenna, have compact structure and
Cheap cost has been favored since by developmental research by numerous researchers and engineering staff, and extensive exploration is expanded
And application and development.
A antenna suitable for the detection of human body microwave should have and have stable impedance performance in tissue surface, and should have
Sufficiently small size is easily arranged in various tissue surfaces, such as the blood sugar concentration detection for ear-lobe tissue.One good
The microwave detection pocket super-broadband antenna for ear-lobe surface, should also have stable reflection characteristic in regulation frequency range,
To the reception good of signal, basis is provided for the signal processing in later stage.
Invention content
The present invention provides a kind of novel small-sized plane printing ultra-wideband antenna, is suitable for ultra wide band frequency, in work
Make that there is stable working characteristics in frequency band, can effectively emit and receive high-frequency signal, this antenna can be applied to ear-lobe tissue table
The blood sugar concentration non-destructive testing in face.Technical scheme is as follows：
A pocket super-broadband antenna for ear-lobe blood glucose Concentration Testing is printed on for the planar structure that is printed on one side
On the substrate of 20mm × 20mm × 1.6mm, metal layer includes radiation sheet metal and earth plate two parts, which is characterized in that spoke
It is symmetrical structure to penetrate sheet metal, and periphery is the rectangle metal frame of a bottom then feed line, is opened at rectangular top
Slot, notch both ends, to metal frame inner recess, are connected into two right-angled trapeziums vis-a-vis by the metal strip of two squares；?
The two trapezoidal intermediate clear areas for forming the isosceles trapezoid shape that one is fallen, are added the isosceles trapezoid of scaled down wherein
Metal patch；The specific size of radiation sheet metal is obtained by emulation.
Description of the drawings
The positive structure schematic of Fig. 1 antennas
The S11 characteristic curves of Fig. 2 antennas
The transmitting of Fig. 3 antennas and reception signal waveform
The reception signal waveform of Fig. 4 antennas
Specific implementation mode
The present invention will be described with reference to the accompanying drawings and examples.
Before the antenna of the design present invention, the multilayer ear-lobe model of first simple structure, to build the emulation conformed to the actual situation
Environment.In conjunction with the naive model of ear-lobe institutional framework, initial antenna size is set.By designed transmitting antenna and receive day
Line is placed in the skin layer surface of model both sides, is suitably debugged by simulation result, obtains suitable antenna structure and size.
As shown in Figure 1, this antenna is the planar structure that is printed on one side, it is printed on the FR-4 type medium bases that dielectric constant is 4.4
On plate, overall dimensions are 20mm × 20mm × 1.6mm, and the double-layer structure of this antenna is respectively metal layer and medium substrate layer.Gold
Belong to layer to be made of radiation sheet metal and earth plate two parts.Ground plate section is made of two pieces of symmetrical rectangular metal sheets.Spoke
It is to realize that electric field energy is radiated the resonant element in space to penetrate sheet metal.It is designed as symmetrical structure, is conducive to keep antenna good
Directionality, the influence that brings of cross polarization is eliminated, so radiation sheet metal part is designed as symmetrical structure.Radiation sheet metal
Periphery is the rectangle metal frame of a bottom then feed line, and in rectangular top-slitting, notch both ends are straight by two
Angular metal strip is connected into two right-angled trapeziums vis-a-vis to metal frame inner recess.At this point, in two trapezoidal intermediate formation
The clear area of one isosceles trapezoid shape fallen is added the metal patch of the isosceles trapezoid of scaled down, then constitutes wherein
The design of entire radiation sheet metal part.Radiation sheet metal is connected with the signal wire of radio frequency connector, is suitable for this antenna
Connector be sub-miniature A connector, electromagnetic wave can be transmitted to radiation sheet metal by transmission line.Fig. 1 is such ultra-wideband antenna front
Structural schematic diagram.The dark parts of Fig. 1 are the metal flat (copper foil of 0.035mm) printed.The white portion of antenna is to be situated between
Matter layer.Radiation sheet metal part is calculated by cst softwares according to corresponding structure.By repeatedly optimizing to obtain the geometry of antenna
Dimensional parameters are.The specific geometric dimension parameter of antenna is L=20mm, W=20mm, L1=1mm, L2=2mm, L3=9mm, L4
=2mm, L5=7mm, L6=1mm, L7=4mm, W1=1mm, W2=6.5mm, W3=3mm, W4=1mm, W5=2mm, W6=
5mm, W7=8mm, W8=1mm, W9=5mm, W10=3.1mm, W11=3mm.
Fig. 2 is the S11 figures of antenna.S11 indicates return loss characteristic.Return loss (Return Loss, RL) characterization be
The power consumption efficiency of transmission line port is the ratio between reflected wave powers and incident power of transmission line port, with logarithmic form
It indicates, unit is dB, usually
Negative value, absolute value are properly termed as reflection loss.It is expressed as：RL=-20log | Γ | (dB).(Γ is reflection
Coefficient)
By formula it is inferred that the value of return loss RL is bigger, illustrate that the radiant power not being reflected back is more, matching is more
It is good, when RL is 0, illustrates that antenna is in total reflection state, transmission of the wave by feeder line to antenna does not occur, i.e., that feeder line does not occur
The loss of wave, energy are not radiate.It is intuitive to see antenna in working band 1.22-1.63GHz, 3- from Fig. 2
Return loss in 19.45GHz is in -10dB hereinafter, have good matching properties, and standing-wave ratio is high, and energy transfer efficiency is high.
Fig. 3 is antenna input at work and receives signal waveform.Reception signal waveform when Fig. 4 is work.But it can
To find out signal after the reflection of ear-lobe organization internal, since there are multiple waveforms in multipath effect, however can be from the time
Suitable waveform is found out in delay-angle reckoning.Because being operated under high frequency condition, the decaying of waveform is bigger.But with transmitted wave phase
Compare, received wave waviness trend is constant, is only changed in amplitude, and it is extensive that amplitude variation can pass through follow-up signal enhanced processing
It is multiple, therefore the antenna meets actual detection needs.
The antenna is a blood sugar concentration detection ultra-wideband antenna suitable for ear-lobe tissue, in entire working frequency range
It is functional, it is suitable for ear-lobe tissue surface and the similar tissue of the dielectric constant of some and human skin tissue.The antenna
The electromagnetic transmission medium of transmitting is skin histology, and antenna should attach adjacent to each other when for ear-lobe tissue blood glucose Concentration Testing
In skin surface sending and receiving signal.
Claims (1)
1. a ultra-wideband antenna suitable for human blood glucose concentration detection, for the planar structure that is printed on one side, be printed on 20mm ×
On the substrate of 20mm × 1.6mm, metal layer includes radiation sheet metal and earth plate two parts.It is characterized in that, radiation metal
Piece is symmetrical structure, and periphery is the rectangle metal frame of a bottom then feed line, in rectangular top-slitting, notch
Both ends, to metal frame inner recess, are connected into two right-angled trapeziums vis-a-vis by the metal strip of two squares；It is trapezoidal two
The intermediate clear area for forming the isosceles trapezoid shape that one is fallen, the metal patch for falling isosceles trapezoid of scaled down is added wherein
Piece；The specific size of radiation sheet metal is obtained by emulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810588305.7A CN108742643B (en) | 2018-08-27 | 2018-08-27 | Ultra-wideband antenna suitable for human blood sugar concentration detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810588305.7A CN108742643B (en) | 2018-08-27 | 2018-08-27 | Ultra-wideband antenna suitable for human blood sugar concentration detection |
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| Publication Number | Publication Date |
|---|---|
| CN108742643A true CN108742643A (en) | 2018-11-06 |
| CN108742643B CN108742643B (en) | 2023-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810588305.7A Active CN108742643B (en) | 2018-08-27 | 2018-08-27 | Ultra-wideband antenna suitable for human blood sugar concentration detection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111555017A (en) * | 2020-04-23 | 2020-08-18 | 天津大学 | Ultra-wideband antenna for detecting blood sugar concentration of ear lobe |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090243940A1 (en) * | 2008-03-31 | 2009-10-01 | Tdk Corporation | Feed-point tuned wide band antenna |
| CN102570021A (en) * | 2012-02-16 | 2012-07-11 | 厦门大学 | Trapped wave ultra-wide band antenna with triangular groove |
| CN103094680A (en) * | 2013-01-20 | 2013-05-08 | 云南大学 | Five-notch ultra wide band antenna |
| CN103943953A (en) * | 2014-03-26 | 2014-07-23 | 中国科学院长春光学精密机械与物理研究所 | Small L-T branch knot double-belt-resistance plane ultra-wide-band antenna |
| CN104934703A (en) * | 2015-06-29 | 2015-09-23 | 天津大学 | Ultra-broadband antenna capable of shielding various narrowband signal interferences |
| WO2018133538A1 (en) * | 2017-01-20 | 2018-07-26 | 深圳市景程信息科技有限公司 | Reconfigurable ultra-wideband monopole antenna with notch characteristic |
-
2018
- 2018-08-27 CN CN201810588305.7A patent/CN108742643B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090243940A1 (en) * | 2008-03-31 | 2009-10-01 | Tdk Corporation | Feed-point tuned wide band antenna |
| CN102570021A (en) * | 2012-02-16 | 2012-07-11 | 厦门大学 | Trapped wave ultra-wide band antenna with triangular groove |
| CN103094680A (en) * | 2013-01-20 | 2013-05-08 | 云南大学 | Five-notch ultra wide band antenna |
| CN103943953A (en) * | 2014-03-26 | 2014-07-23 | 中国科学院长春光学精密机械与物理研究所 | Small L-T branch knot double-belt-resistance plane ultra-wide-band antenna |
| CN104934703A (en) * | 2015-06-29 | 2015-09-23 | 天津大学 | Ultra-broadband antenna capable of shielding various narrowband signal interferences |
| WO2018133538A1 (en) * | 2017-01-20 | 2018-07-26 | 深圳市景程信息科技有限公司 | Reconfigurable ultra-wideband monopole antenna with notch characteristic |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111555017A (en) * | 2020-04-23 | 2020-08-18 | 天津大学 | Ultra-wideband antenna for detecting blood sugar concentration of ear lobe |
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| CN108742643B (en) | 2023-10-17 |
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