CN105915074A - Broadband high-efficiency microwave rectifier - Google Patents
Broadband high-efficiency microwave rectifier Download PDFInfo
- Publication number
- CN105915074A CN105915074A CN201610261288.7A CN201610261288A CN105915074A CN 105915074 A CN105915074 A CN 105915074A CN 201610261288 A CN201610261288 A CN 201610261288A CN 105915074 A CN105915074 A CN 105915074A
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- microstrip line
- microstrip
- broadband
- line
- metal floor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P3/00—Waveguides; Transmission lines of the waveguide type
- H01P3/02—Waveguides; Transmission lines of the waveguide type with two longitudinal conductors
- H01P3/08—Microstrips; Strip lines
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
The invention discloses a broadband high-efficiency microwave rectifier comprising an upper microstrip structure, an intermediate dielectric substrate and a bottom metal floor. The upper microstrip structure is arranged on the upper surface of the intermediate dielectric substrate. The bottom metal floor is arranged on the lower surface of the intermediate dielectric substrate. The upper microstrip structure comprises an isolation capacitor, a diode, a filter capacitor, a load, an input port, a sixth microstrip line, a seventh microstrip line and a matching network. The matching network is formed by a first microstrip line, a second microstrip line, a third microstrip line, a fourth microstrip line and a fifth microstrip line which are connected in turn. The isolation capacitor is connected between the input port and the first microstrip line in a crossing way. The diode is connected between the fifth microstrip line and the sixth microstrip line in the crossing way. The filter capacitor is connected in parallel with the load and connected between the sixth microstrip line and the seventh microstrip line in the crossing way. The structure and the size of all the microstrip lines of the matching network are adjusted so that the rectifier is enabled to obtain great conversion efficiency within a large frequency range.
Description
Technical field
The present invention relates to field of rectifiers, be specifically related to a kind of high efficiency microwave rectifier of broadband.
Background technology
In recent years, radio-frequency (RF) energy collection is more and more paid attention to.Wherein, high efficiency commutator is energy
A most important ring in amount collection.It is straight that the radiofrequency signal received can be converted to be used directly by it
Stream signal.These direct current signals can drive various electronic equipment and be applied to solar power satellite system
System, wireless senser and biomedical devices etc..At present, substantial amounts of scholar has been directed towards the efficiency of commutator
Lifting scheme launches research and proposes many different schemes.
In order to allow commutator can collect more useful energy in radio-frequency (RF) energy collection system, broadband and
High efficiency is two important performance indications.Generally, it is possible to use impedance matching network obtains broader work
Make bandwidth, utilize new designing technique can improve the efficiency of work.Document " Y.Han, O.Leitermann,
D.A.Jackson,J.M.Rivas,and D.J.Perreault,“Resistance compression networks for
radio-frequency power conversion,”IEEE Trans.Power Electron.,vol.22,no.1,pp.
41-53, Jan.2007. " in, use resistance compression network to make commutator obtain in broader input power range
High efficiency.At document " C.Y.Song, Y.Huang, J.F.Zhou and J.W.Zhang " A high-efficiency
broadband rectenna for ambient wireless energy harvesting,”IEEE Trans.Antennas
And Propagation, vol.63, no.8, pp.3486 3495, Aug.2015. " in, use double minor matters impedance
The bandwidth of operation of rectification widened by distribution network and diode.Document " D.Wang.M.D.W and R.Negra,
“Design of a broadband microwave rectifier from 40MHz to 4740MHz using high
impedance inductor,”in 2014Asia-Pacific Microwave conference,Sendai,Japan,
Nov.2014, pp.1010-1012. " in, this circuit structure eliminates the matching network depending on frequency characteristic,
And it being the use of the inducer of a high impedance to isolate radiofrequency signal and direct current signal, this has widened commutator
Bandwidth of operation, but its efficiency only has 40% to 60%.Document " H.Sakaki, K.Nishikawa,
“Broadband rectifier design based on quality factor of input matching circuit,”2014
Asia-Pacific Microwave Conference, Sendai, Japan, Nov.2014, pp.1205-1207. " in,
By improving the quality factor of input matching network, the efficiency of commutator brings up to 70%.But its relative bandwidth
Only only have 18.5%.Inside most research, researcher is more concerned with being respectively increased the efficiency of commutator
With the bandwidth of operation of commutator, few research can improve the achievement of rectifier efficiency and bandwidth simultaneously.But,
Broader frequency band and higher efficiency just adapt to the requirement that radio-frequency (RF) energy is collected, so the research to it is gesture
Must go.
Summary of the invention
In order to overcome shortcoming that prior art exists with not enough, the present invention provides a kind of broadband high efficiency micro-
Ripple commutator.
The present invention is on the basis of conventional rectifier, by the one-stage serial microstrip line being newly added, one section of parallel connection
The matching network of short-circuit micro-band line and one section of coupled microstrip line composition regulates the input impedance of commutator so that it is
All good conversion efficiency can be obtained in a bigger frequency range.
The present invention adopts the following technical scheme that
A kind of high efficiency microwave rectifier of broadband, including upper-layer micro-strip structure, intermediate medium substrate and the end
Layer metal floor, described upper-layer micro-strip structure is positioned at the upper surface of intermediate medium substrate, position, underlying metal floor
In the lower surface of intermediate medium substrate, described upper-layer micro-strip structure includes isolation capacitance, diode, filtered electrical
Appearance, load, input port, the 6th microstrip line, the 7th microstrip line and matching network, described matching network by
The first microstrip line, the second microstrip line, the 3rd microstrip line, the 4th microstrip line and the 5th microstrip line being sequentially connected with
Constituting, described isolation capacitance is connected across between input port and the first microstrip line, and described diode is connected across the
Between five microstrip lines and the 6th microstrip line, filter capacitor is in parallel with load, and is connected across the 6th microstrip line and the
Between seven microstrip lines.
The end of the 4th microstrip line is connected to underlying metal floor by metallization via, the end of the 7th microstrip line
Hold and be connected to underlying metal floor by metallization via.
Described 5th microstrip line is series connection microstrip line, and the quarter-wave of its a length of mid frequency is described
4th microstrip line is parallel connection short circuit microstrip line, the quarter-wave of its a length of mid frequency, the first micro-strip
Line, the second microstrip line and the 3rd microstrip line are specially short circuit coupled microstrip line, frequency centered by its equivalent length
Quarter-wave.
Described first microstrip line and the 3rd microstrip line are parallel to each other, the second microstrip line respectively with the first microstrip line and
3rd microstrip line is vertical.
Beneficial effects of the present invention:
In the match circuit that the present invention can be newly added by adjustment, the structure of microstrip line and size, make commutator
Good conversion efficiency is obtained in a bigger frequency range.
Accompanying drawing explanation
Fig. 1 is the structure chart of the present invention high efficiency microwave rectifier of a kind of broadband；
Fig. 2 is the size marking schematic diagram of the present embodiment；
Fig. 3 is the present embodiment test figure at the S11 that input power is 12.8dBm；
Fig. 4 is the present embodiment at the emulation of the conversion efficiency that input power is 12.8dBm and test figure；
Fig. 5 is the present embodiment in the emulation of the conversion efficiency that input power range is 3dBm to 14.1dBm and survey
Attempt.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but the enforcement of the present invention
Mode is not limited to this.
Embodiment
As it is shown in figure 1, a kind of high efficiency microwave rectifier of broadband, including upper-layer micro-strip structure, centre
Medium substrate and underlying metal floor, described upper-layer micro-strip structure is positioned at the upper surface of intermediate medium substrate, the end
Layer metal floor is positioned at the lower surface of intermediate medium substrate, and described upper-layer micro-strip structure includes isolation capacitance 9, two
Pole pipe 10, filter capacitor 11, load 12, input port the 1, the 6th microstrip line the 7, the 7th microstrip line 8 and
Matching network, described matching network is by first microstrip line the 2, second microstrip line the 3, the 3rd micro-strip being sequentially connected with
Line the 4, the 4th microstrip line 5 and the 5th microstrip line 6 are constituted, described isolation capacitance 9 be connected across input port 1 and
Between first microstrip line 2, positive pole and the 5th microstrip line 6 of described diode 10 connect, described diode 10
Negative pole and the 6th microstrip line 7 connect, filter capacitor 11 is 12 in parallel with load, and is connected across the 6th micro-strip
Between line 7 and the 7th microstrip line 8.
The end of described 4th microstrip line 5 is connected to underlying metal floor by metallization via, the 7th micro-strip
The end of line 8 is connected to underlying metal floor by metallization via.
Described first microstrip line 2 and the 3rd microstrip line 4 are parallel to each other, and the second microstrip line 3 is micro-with first respectively
Band wire 2 and the 3rd microstrip line 4 are vertical.
5th microstrip line 6 is set to microstrip line of connecting, the quarter-wave of its a length of mid frequency, uses
In the input impedance realizing its right-hand member circuit, on the basis of mid frequency, to both sides, skew presents conjugate action, the
Four microstrip lines 5 are set to parallel connection short circuit microstrip line, and the quarter-wave of its a length of mid frequency is used for
Realize offsetting the imaginary part of its right-hand member circuit input impedance, the first microstrip line the 2, second microstrip line 3 and the 3rd micro-strip
Line 4 is set to short circuit coupled microstrip line, and the quarter-wave of frequency centered by its equivalent length, for real
The input impedance of its right-hand member circuit existing and source impedance coupling.By adjust each microstrip line of matching network structure and
Size, can make commutator obtain good conversion efficiency in a bigger frequency range.
A kind of broadband high efficiency microwave rectifier size marking figure in the present embodiment is as in figure 2 it is shown, following
It is only an example of the present invention.Intermediate medium substrate used in this example is Rogers 4003, and it is thick
Degree is 1.575mm, and dielectric constant is 3.38, and loss tangent is 0.002, and microstrip line thickness is 35um.
Physical circuit size Selection is as follows: input port 1 length L1=4.3mm, live width W1=1mm, first is micro-
Band wire 2 length L2=19.15mm, live width W2=4.3mm, the second microstrip line 3 length L3=0.6mm,
Live width W3=2.1mm, the 3rd microstrip line 4 length L4=18.8mm, live width W4=4.7mm, the 4th micro-strip
Line 5 length L5=40.8mm, live width W5=21mm, the 5th microstrip line 6 length L6=53.8mm, live width
W6=1.8mm, the 6th microstrip line 7 length L7=2.54mm, live width W7=1mm, the 7th microstrip line 8
Length L8=2.54mm, live width W8=1mm, isolation capacitance 9 size 50pF, diode 10 model
HSMS2860, filter capacitor 11 size 200pF, load 12 size 300 Ω.
It is input power when being 12.8dBm shown in Fig. 3, embodiment of the present invention S at different frequencies11Survey
Test result, in figure, vertical coordinate numeral represents reflection coefficient, and unit is dB.As seen from the figure, the present invention proposes
The high efficiency commutator of broadband is operated in 0.54GHz to 1.2GHz, and mid frequency is 0.8GHz, opposite band
A width of 75%.
Shown in Fig. 4 be input power when 12.8dBm, the embodiment of the present invention at different frequencies conversion effect
The emulation of rate and test result, in figure, vertical coordinate numeral is conversion efficiency, and unit is %.As seen from the figure, this
Bright all can obtain in 0.57GHz to 0.9GHz frequency band more than 70% conversion efficiency.In figure test result and
Simulation result frequency somewhat deviation is that mismachining tolerance causes, and belongs to acceptable scope.
Being input power range when being 3dBm to 14.1dBm shown in Fig. 5, the present invention implements at different frequencies
The emulation of conversion efficiency and test result, in figure, vertical coordinate numeral is conversion efficiency, and unit is %.Can by figure
Knowing, under the conditions of different input power, the present invention all can obtain in 0.57GHz to 0.9GHz frequency band and be higher than
The conversion efficiency of 50%, this gives the credit to matching network dealing carefully with different input powers.
In sum, the present invention proposes a kind of high efficiency microwave rectifier of broadband, by be newly added
Matching network regulates the input impedance of commutator so that it is all can obtain good in a bigger frequency range
Good conversion efficiency.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are not by described reality
Execute the restriction of example, the change made under other any spirit without departing from the present invention and principle, modification,
Substitute, combine, simplify, all should be the substitute mode of equivalence, within being included in protection scope of the present invention.
Claims (4)
1. the high efficiency microwave rectifier of broadband, it is characterised in that include upper-layer micro-strip structure, in
Between medium substrate and underlying metal floor, described upper-layer micro-strip structure is positioned at the upper surface of intermediate medium substrate,
Underlying metal floor is positioned at the lower surface of intermediate medium substrate, described upper-layer micro-strip structure include isolation capacitance,
Diode, filter capacitor, load, input port, the 6th microstrip line, the 7th microstrip line and matching network,
Described matching network is by the first microstrip line being sequentially connected with, the second microstrip line, the 3rd microstrip line, the 4th micro-strip
Line and the 5th microstrip line are constituted, and described isolation capacitance is connected across between input port and the first microstrip line, described
Diode is connected across between the 5th microstrip line and the 6th microstrip line, and filter capacitor is in parallel with load, and is connected across
Between 6th microstrip line and the 7th microstrip line.
A kind of high efficiency microwave rectifier of broadband the most according to claim 1, it is characterised in that
The end of the 4th microstrip line is connected to underlying metal floor by metallization via, and the end of the 7th microstrip line leads to
Cross metallization via and be connected to underlying metal floor.
A kind of high efficiency microwave rectifier of broadband the most according to claim 1, it is characterised in that
Described 5th microstrip line is series connection microstrip line, the quarter-wave of its a length of mid frequency, the described 4th
Microstrip line is parallel connection short circuit microstrip line, the quarter-wave of its a length of mid frequency, the first microstrip line,
Second microstrip line and the 3rd microstrip line are specially short circuit coupled microstrip line, centered by its equivalent length the four of frequency
/ mono-wavelength.
A kind of broadband high efficiency microwave rectifier the most according to claim 1, it is characterised in that institute
Stating the first microstrip line and the 3rd microstrip line is parallel to each other, the second microstrip line is micro-with the first microstrip line and the 3rd respectively
Band wire is vertical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610261288.7A CN105915074B (en) | 2016-04-25 | 2016-04-25 | A kind of efficient microwave rectifier of broadband |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610261288.7A CN105915074B (en) | 2016-04-25 | 2016-04-25 | A kind of efficient microwave rectifier of broadband |
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| CN105915074A true CN105915074A (en) | 2016-08-31 |
| CN105915074B CN105915074B (en) | 2018-10-09 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107404238A (en) * | 2017-07-26 | 2017-11-28 | 华南理工大学 | A kind of double frequency rectification circuit of wide input power range |
| CN107947392A (en) * | 2017-12-14 | 2018-04-20 | 中国科学院长春光学精密机械与物理研究所 | A kind of low section small microwave delivery of energy rectifier |
| CN110034692A (en) * | 2019-04-15 | 2019-07-19 | 西安电子科技大学 | Low power microwave rectification circuit based on local resonance |
| CN110190685A (en) * | 2019-05-31 | 2019-08-30 | 四川大学 | A kind of broadband rectification circuit collected for electromagnetic energy |
| CN110935098A (en) * | 2019-11-29 | 2020-03-31 | 常州瑞神安医疗器械有限公司 | Miniaturized radio frequency energy collecting circuit and implantable medical equipment power supply circuit |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107404238A (en) * | 2017-07-26 | 2017-11-28 | 华南理工大学 | A kind of double frequency rectification circuit of wide input power range |
| CN107404238B (en) * | 2017-07-26 | 2024-04-05 | 华南理工大学 | Dual-frequency rectifying circuit with wide input power range |
| CN107947392A (en) * | 2017-12-14 | 2018-04-20 | 中国科学院长春光学精密机械与物理研究所 | A kind of low section small microwave delivery of energy rectifier |
| CN110034692A (en) * | 2019-04-15 | 2019-07-19 | 西安电子科技大学 | Low power microwave rectification circuit based on local resonance |
| CN110034692B (en) * | 2019-04-15 | 2021-03-26 | 西安电子科技大学 | Low-power microwave rectification circuit based on local resonance |
| CN110190685A (en) * | 2019-05-31 | 2019-08-30 | 四川大学 | A kind of broadband rectification circuit collected for electromagnetic energy |
| CN110935098A (en) * | 2019-11-29 | 2020-03-31 | 常州瑞神安医疗器械有限公司 | Miniaturized radio frequency energy collecting circuit and implantable medical equipment power supply circuit |
| CN110935098B (en) * | 2019-11-29 | 2023-07-18 | 常州瑞神安医疗器械有限公司 | Miniaturized radio frequency energy collection circuit and implantable medical device power supply circuit |
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| Publication number | Publication date |
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| CN105915074B (en) | 2018-10-09 |
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