CN205488450U - Rectifier circuit with bandpass characteristics - Google Patents
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Abstract
The utility model provides a rectifier circuit with bandpass characteristics, include from last microstrip element, base plate and metal bottom of arranging in proper order extremely down, wherein it is loaded with rectifier module to add on the microstrip element, rectifier module includes that the harmonic restraines the merit and divides ware, blocking capacitance, input matching network, rectifier diode, output low pass filter and load resistance, the harmonic restraines the merit and divides the ware to include two output port, and an output port is connected with load resistance's one end through blocking capacitance, input matching network, rectifier diode and the output low pass filter who connects gradually, and blocking capacitance, input matching network, rectifier diode and output low pass filter and load resistance's the other end that another output port connected gradually are connected. The utility model discloses the ware is divided with the partial merit that incorporates of traditional rectifier circuit's input harmonic suppression, the bandpass characteristics can be realized simultaneously at the assurance rectification efficiency.
Description
Technical field
The rectification circuit that this utility model relates to wireless energy transfer, wireless energy uses in reclaiming, particularly to a kind of rectification circuit with bandpass characteristics that harmonics restraint incorporates power splitter.
Background technology
Rectification circuit is a kind of circuit that radio-frequency (RF) energy can be converted to DC energy, antenna is received or the radio-frequency (RF) energy of other circuit supply by it, first pass through input filter and arrive commutation diode, diode is followed by exporting low pass filter and load resistance, and such energy is limited to rectification repeatedly on the diode between two wave filter.Widely, such as microwave power aircraft, wireless power transfer charger, sensor wireless charges the purposes of rectification circuit.Core technology among these is exactly rectification circuit, and the quality of rectification circuit directly affects the performance of whole system.
Differential type rectification circuit efficiently and is gradually known with it, but differential type rectification circuit is followed by two input filters can bring the highest insertion loss, do not connect input filter and can reduce again the performance of rectification circuit, if input filter being merged into inside power splitter, the problems referred to above will be readily solved, and obtained bandpass characteristics can solve the problem to out of band signal interference.
Utility model content
This utility model is to overcome at least one defect (not enough) described in above-mentioned prior art, it is provided that a kind of rectification circuit with bandpass characteristics, realizes bandpass characteristics, do not interfere frequency band with external signal while ensureing rectification efficiency.
In order to solve the problems referred to above, the technical solution of the utility model is as follows:
A kind of rectification circuit with bandpass characteristics, including the microstrip element arranged the most successively, substrate and metal back layer；It is loaded with rectification module on wherein said microstrip element；
Described rectification module includes harmonics restraint power splitter, capacitance, input matching network, commutation diode, output low pass filter and load resistance；Described harmonics restraint power splitter includes two output ports, one output port is connected with one end of load resistance by capacitance, input matching network, commutation diode and the output low pass filter being sequentially connected with, and capacitance, input matching network, commutation diode and output low pass filter that another output port is sequentially connected with are connected with the other end of load resistance.
Preferably, described harmonics restraint power splitter is made up of four 1/4 round A1, A2, A3, A4 and four fluting B1, B2, B3, B4 and three flutings port C1, C2, C3；In described four 1/4 round A1, A2, A3, A4, round A2 and A4 of symmetrical two 1/4 is equivalently-sized, and round A1 and A3 of symmetrical two 1/4 is equivalently-sized；Four flutings B1, B2, B3, B4 are the rectangular channel pointing to the center of circle, and its axis is the critical line of four 1/4 circles, and fluting B1 and fluting B4 is equivalently-sized, and fluting B2 and fluting B3 is equivalently-sized.Three fluting port C1, C2, C3 sensing centers of circle and fluting are rectangular channel, and wherein fluting port C1 is input port, and axis is L1, and fluting port C2 and C3 is that output port axis is respectively L2 and L3, and C2 and C3 is equivalently-sized；Two output ports are symmetrical about axis L1,
Described microstrip element is symmetrical about axis L1.
Preferably, described input matching network is made up of three open circuit minor matters S1, S2, S3 and short-circuit minor matters S4, and short circuit minor matters S4 are connected to metal back layer by metallic vias.
Preferably, described commutation diode is Schottky diode；
One output port of described harmonics restraint power splitter is connected with one end of load resistance by capacitance, input matching network, commutation diode and the output low pass filter being sequentially connected with, wherein this commutation diode positive pole connects input matching network, and this commutation diode negative pole connects output low pass filter；
Capacitance, input matching network, commutation diode and output low pass filter that another output port of described harmonics restraint power splitter is sequentially connected with are connected with the other end of load resistance, wherein this commutation diode negative pole connects input matching network, and this commutation diode positive pole connects output low pass filter.
Preferably, described output low pass filter is made up of two sector open-circuit minor matters F1, F2 and rectangle open circuit minor matters, and its outfan is connected with load resistance.
Preferably, described substrate is dielectric material substrate, and the dielectric constant of dielectric material is 3.38.
Preferably, described metal back layer is the metal back layer being paved with good conductor.
The purpose of this utility model is to improve the problem that in existing commutation technique, bandpass characteristics and rectification efficiency can not get both, and filled up the blank using wideband harmonics restraint power splitter to make rectification circuit, and provide a kind of radio frequency rectification circuit simultaneously realizing bandpass characteristics, simple in construction in guarantee rectification efficiency.
The beneficial effects of the utility model are as follows: (1) this utility model proposes the rectification circuit that a kind of broadband harmonic suppression power splitter realizes first, is very suitable for radio-frequency wireless energy transmission and the application of energy-recuperation system.(2) compared with prior art, implement the rectification circuit based on broadband harmonics restraint power splitter employed in this utility model, have the advantages that 1, under certain input power, high efficiency rectification can be realized in broad frequency band.2, ensureing in frequency band that while rectification efficiency, not unexpected to frequency band signal interferes 3, for different application scene, diode can be changed and realize the application under different input power.4, for different application frequency, design size can be changed, it is achieved above-mentioned identical characteristic.5, planar microstrip structure, simple in construction, low cost are used.
Accompanying drawing explanation
Fig. 1 is this utility model embodiment side structure schematic diagram.
Fig. 2 is the structural representation of this utility model rectification module.
Fig. 3 is this utility model embodiment ground floor upper strata micro-strip overall structure schematic diagram.
Fig. 4 this utility model embodiment actual measurement rectification efficiency variation diagram under different input power and frequency.
Fig. 5 be this utility model embodiment input power when being 17dbm rectification efficiency at the measured value of each Frequency point.
Fig. 6 is the structural representation of this utility model embodiment middle width strip harmonics restraint power splitter.
Fig. 7 is that the merit of this utility model embodiment middle width strip harmonics restraint power splitter is intrinsic and harmonic suppression effect figure.
Fig. 8 is the structural representation of this utility model embodiment output filter.
Fig. 9 is the harmonic suppression effect figure of this utility model embodiment output filter.
The overall actual measurement reflection coefficient in the case of input power is 10dbm of Figure 10 this utility model embodiment.
Detailed description of the invention
Accompanying drawing being merely cited for property explanation, it is impossible to be interpreted as the restriction to this patent；In order to the present embodiment is more preferably described, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product；
To those skilled in the art, in accompanying drawing, some known features and explanation thereof may will be understood by omission.With embodiment, the technical solution of the utility model is described further below in conjunction with the accompanying drawings.
Shown in Fig. 1, Fig. 2 and Fig. 3, a kind of rectification circuit with bandpass characteristics, the three-decker including arranging the most successively: ground floor is microstrip element 101, the second layer is substrate 102, and third layer is metal back layer 103；Wherein, ground floor micro-strip patch unit 101 is loaded with rectification module 200.
Described rectification module 200 includes harmonics restraint power splitter 201, capacitance 202, input matching network 203, commutation diode 204, output low pass filter 205 and load resistance 206；Described harmonics restraint power splitter 201 includes two output ports, one output port is connected with one end of load resistance 206 by the capacitance 202 being sequentially connected with, input matching network 203, commutation diode 204 and output low pass filter 205, and capacitance 202, input matching network 203, commutation diode 204 and output low pass filter 205 that another output port is sequentially connected with are connected with the other end of load resistance 206.
Described harmonics restraint power splitter 201 is by four 1/4 round A1, A2, A3, A4 and four fluting B1, B2, B3, B4 and three fluting port C1, C2, C3 forms, in described four 1/4 circles, round A2 and A4 of symmetrical two 1/4 is equivalently-sized, round A1 and A3 of symmetrical two 1/4 is equivalently-sized, the radius of 1/4 circle A2 and A4 is r1, the radius of 1/4 circle A1 and A3 is r2, four fluting B1, B2, B3, B4 is the rectangular channel pointing to the center of circle, the degree of depth and broadband are respectively Lb1, Lb2, Lb3, Lb4 and Wb1, Wb2, Wb3, Wb4, wherein fluting B1 and fluting B4 is completely the same, fluting B2 and fluting B3 is completely the same.Three flutings port C1, C2, C3 point to the center of circle and slot as rectangular channel, wherein C1 is input port, C2 and C3 be output port and C2 and C3 completely the same, port groove depth Ls1, Ls2, Ls3 thickness Ws1, Ws2, Ws3, port axis Lp2 and Lp3 and horizontal line L p1 angle β, thickness Wc1, Wc2, Wc3 of three ports and length Lc1, Lc2, Lc3.
Described micro-strip patch unit 101 is symmetrical about centrage L1.
Above-mentioned capacitance 202 is merged into overall playing every effect that is straight and that mate with input matching network 203, and in the present embodiment, capacitance capacitance is 10pF, and model is Murata GRM18.
Described input matching network 203 is made up of three open circuit minor matters S1, S2, S3 and short-circuit minor matters S4, and short circuit minor matters S4 are connected to metal back layer 103 by metallic vias.Said two commutation diode 204 is Schottky diode, and model is HSMS286b, and they connection polar orientation in circuit are contrary；In the present embodiment, one output port of described harmonics restraint power splitter 201 is connected with one end of load resistance 206 by the capacitance 202 being sequentially connected with, input matching network 203, commutation diode 204 and output low pass filter 205, wherein this commutation diode 204 positive pole connects input matching network 203, and this commutation diode 204 negative pole connects output low pass filter 205.
Described output band filter 205 is made up of two sector open-circuit minor matters F1, F2 and rectangle open circuit minor matters S5, and its outfan is connected with load resistance 206.Described load resistance 206 is connected with the output low pass filter 205 of horizontal symmetry, and resistance is 560 ohm, is encapsulated as 0603.
Described substrate is dielectric material substrate, and the Rogers 4003C material that dielectric material uses thickness to be 0.813mm, its dielectric constant is 3.38.Described metal back layer 103 is the metal back layer 103 being paved with good conductor.This rectification circuit is under input power 16dbm premise, and the highest actual measurement rectification efficiency can reach 72.4%.The efficiency that the radio-frequency (RF) energy of incoming frequency 2.4Ghz-2.75Ghz scope is higher than 50% with actual measurement, when input power is more than 7dbm, can be realized rectification by rectification circuit.
The method for designing of the above-mentioned rectification circuit with bandpass characteristics is:
nullFirst，According to required mid frequency and bandwidth (this example is 2.4GHz-2.75GHz)，The relative dielectric constant (this example is 3.38) of medium substrate，The parameters size of harmonics restraint power splitter 201 is determined by full-wave electromagnetic simulation software，Make this power splitter have merit at target band and divide the performance (this such as Fig. 6) with harmonics restraint，Required adjustment parameter includes the radius r1 of 1/4 circle A1 and A2、r2，Four fluting B1、B2、B3、B4 degree of depth Lb1、Lb2、Lb3、Lb4 and thickness Wb1、Wb2、Wb3、Wb4，Port fluting C1、C2、C3 degree of depth Ls1、Ls2、Ls3 thickness Ws1、Ws2、Ws3，The angle β of port axis Lp2 and Lp3 and centrage L1，The thickness Wc1 of three ports、Wc2、Wc3 and length Lc1、Lc2、Lc3.
Second step design output low pass filter 205, adjusting relevant parameter according to required mid frequency makes output filter have preferably suppression (such as inhibition Fig. 9 of this example) at mid frequency and harmonic wave thereof, the required parameter adjusted includes two fan-shaped minor matters F1, the angle [alpha] 1 of F2, α 2 and radius r3, r4, length L5 of open circuit minor matters S5 and width W5.
3rd step selects corresponding diode (as this example selects HSMS286B for the mid frequency of 2.45GHz and the medium power applications of 16dbm) according to power demand and the frequency scope of application.
Capacitance, original match minor matters, diode, output filter are connected and form preliminary rectification minor matters by the 4th step, under certain input power, the resistance of fine setting load resistance 206 makes rectification efficiency reach maximum to determine optimum load resistance (load of this example is 560 ohm).
Two rectification minor matters are connected composition rectification circuit by the 5th step with power splitter, fine setting matching network parameters, input C1 reflection coefficient at center frequency-band is made to reach best including coupling minor matters S1, length L1 of S2, S3, S4, L2, L3, L4 and broadband W1, W2, W3, W4, capacitance, finally there are differences with truth due to the model of diode, the parameters of matching network can be finely tuned again to optimize measured result when actual measurement.
nullAbove-mentioned each circuit parameter is: r1=16.5mm，r2=15mm，Lb1=8.6 mm，Lb2=9.6 mm， Wb1=4.3mm，Wb2=4.8mm，Ls1=6mm，Ls2=4.6mm，Ws1=3.1mm，Ws2=3.2mm，Wc1=Wc2=Wc3=1.88mm，Lc1=11mm，α1=93，α2=90，β=62，r3=11.5mm，r4=4.5mm，L5=9.7mm，W5=1mm，W1=1.75mm，W2=2.28mm，W3=1mm，W4=2.36mm，L1=10.5mm，L2=10.3mm，L3=7.85mm，L4=8mm.
With reference to Fig. 4, this utility model embodiment actual measurement rectification efficiency variation diagram under different input power and frequency, it can be seen that this utility model can provide stable rectification efficiency in respective frequencies scope and input power range.
During with reference to Fig. 5 (when being 16dbm for this utility model embodiment input power, rectification efficiency is at the measured value of each Frequency point) it can be seen that this utility model is in input power 16dbm, its rectification efficiency is persistently more than 65% at 2.4GHz to 2.75GHz.
With reference to Fig. 6 (structural representation of this utility model embodiment middle width strip harmonics restraint power splitter), Fig. 7 (merit of this utility model embodiment middle width strip harmonics restraint power splitter intrinsic and harmonic suppression effect figure), power splitter part of the present utility model is while realizing power splitter, it is also possible to realize the performance of harmonics restraint and low pass filter.
With reference to Fig. 8 (structural representation of this utility model embodiment output filter) and Fig. 9 (the harmonic suppression effect figure of this utility model embodiment output filter), output filter designed by this example can have good inhibiting effect at mid frequency and harmonic wave thereof.
With reference to Figure 10 (the overall actual measurement reflection coefficient in the case of input power is 10dbm of this utility model embodiment) and Fig. 4 (this utility model embodiment actual measurement rectification efficiency variation diagram under different input power and frequency), rectification circuit designed by this example, while ensureing rectification efficiency, also has bandpass characteristics.
Above-mentioned all results are all Rogers 4003C at baseplate material, and dielectric constant is 3.38, substrate thickness be 0.813mm true environment under recorded by Network Analyzer and circuit tester.Signal source is provided by signal generator, by above emulation and test comparison figure it is found that the goodness of fit of emulation and measured curve is higher, indicates scheme of the present utility model practical.
Obviously, above-described embodiment of the present utility model is only for clearly demonstrating this utility model example, and is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also cannot all of embodiment be given exhaustive.All any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, within should be included in this utility model scope of the claims.
Claims (7)
1. there is a rectification circuit for bandpass characteristics, it is characterized in that, including the microstrip element (101) arranged the most successively, substrate (102) and metal back layer (103)；Rectification module (200) it is loaded with on wherein said microstrip element (101)；
Described rectification module (200) includes harmonics restraint power splitter (201), capacitance (202), input matching network (203), commutation diode (204), output low pass filter (205) and load resistance (206)；Described harmonics restraint power splitter (201) includes two output ports, one output port is connected with one end of load resistance (206) by the capacitance (202) being sequentially connected with, input matching network (203), commutation diode (204) and output low pass filter (205), and capacitance (202), input matching network (203), commutation diode (204) and output low pass filter (205) that another output port is sequentially connected with are connected with the other end of load resistance (206).
The rectification circuit with bandpass characteristics the most according to claim 1, is characterized in that, described harmonics restraint power splitter (201) is made up of four 1/4 round A1, A2, A3, A4 and four fluting B1, B2, B3, B4 and three flutings port C1, C2, C3；In described four 1/4 round A1, A2, A3, A4, round A2 and A4 of symmetrical two 1/4 is equivalently-sized, and round A1 and A3 of symmetrical two 1/4 is equivalently-sized；Four flutings B1, B2, B3, B4 are the rectangular channel pointing to the center of circle, and its axis is the critical line of four 1/4 circles, and fluting B1 and fluting B4 is equivalently-sized, and fluting B2 and fluting B3 is equivalently-sized；
Three fluting port C1, C2, C3 sensing centers of circle and fluting are rectangular channel, and wherein fluting port C1 is input port, and axis is L1, and fluting port C2 and C3 is that output port axis is respectively L2 and L3, and C2 and C3 is equivalently-sized；Two output ports are symmetrical about axis L1,
Described microstrip element (101) is symmetrical about axis L1.
The rectification circuit with bandpass characteristics the most according to claim 2, it is characterized in that, described input matching network (203) is made up of three open circuit minor matters S1, S2, S3 and short-circuit minor matters S4, and short circuit minor matters S4 are connected to metal back layer (103) by metallic vias.
The rectification circuit with bandpass characteristics the most according to claim 3, is characterized in that, described commutation diode (204) is Schottky diode；
One output port of described harmonics restraint power splitter (201) is connected with one end of load resistance (206) by the capacitance (202) being sequentially connected with, input matching network (203), commutation diode (204) and output low pass filter (205), wherein this commutation diode (204) positive pole connects input matching network (203), and this commutation diode (204) negative pole connects output low pass filter (205)；
Capacitance (202), input matching network (203), commutation diode (204) and output low pass filter (205) that another output port of described harmonics restraint power splitter (201) is sequentially connected with are connected with the other end of load resistance (206), wherein this commutation diode (204) negative pole connects input matching network (203), and this commutation diode (204) positive pole connects output low pass filter (205).
The rectification circuit with bandpass characteristics the most according to claim 4, is characterized in that, described output low pass filter (205) is made up of two sector open-circuit minor matters F1, F2 and rectangle open circuit minor matters, and its outfan is connected with load resistance (206).
The rectification circuit with bandpass characteristics the most according to claim 5, is characterized in that, described substrate (102) is dielectric material substrate, and the dielectric constant of dielectric material is 3.38.
The rectification circuit with bandpass characteristics the most according to claim 6, is characterized in that, described metal back layer (103) is the metal back layer being paved with good conductor.
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| CN201521046614.XU CN205488450U (en) | 2015-12-15 | 2015-12-15 | Rectifier circuit with bandpass characteristics |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329970A (en) * | 2016-09-05 | 2017-01-11 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | Rectifier circuit with bandpass characteristics and wide input power range |
| CN106602201A (en) * | 2016-12-19 | 2017-04-26 | 西安易朴通讯技术有限公司 | Power divider |
| CN107612362A (en) * | 2017-09-13 | 2018-01-19 | 华南理工大学 | A kind of high efficiency rectification circuit of wide input power range |
| CN107946707A (en) * | 2017-10-26 | 2018-04-20 | 中山大学 | Balance bandpass filter and its design method based on right angled triangle paster structure |
| CN109193148A (en) * | 2018-09-16 | 2019-01-11 | 复旦大学 | A kind of four frequency range Circular polarized omni-directional RECTIFYING ANTENNAs |
| CN113193317A (en) * | 2021-05-14 | 2021-07-30 | 南京智能高端装备产业研究院有限公司 | Double-passband power division filter adopting single-layer circular patch |
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2015
- 2015-12-15 CN CN201521046614.XU patent/CN205488450U/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106329970A (en) * | 2016-09-05 | 2017-01-11 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | Rectifier circuit with bandpass characteristics and wide input power range |
| CN106329970B (en) * | 2016-09-05 | 2019-08-02 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | A kind of rectification circuit with bandpass characteristics and wide input power range |
| CN106602201A (en) * | 2016-12-19 | 2017-04-26 | 西安易朴通讯技术有限公司 | Power divider |
| CN106602201B (en) * | 2016-12-19 | 2022-02-25 | 西安易朴通讯技术有限公司 | Power distributor |
| CN107612362A (en) * | 2017-09-13 | 2018-01-19 | 华南理工大学 | A kind of high efficiency rectification circuit of wide input power range |
| CN107612362B (en) * | 2017-09-13 | 2024-02-13 | 华南理工大学 | High-efficiency rectifying circuit with wide input power range |
| CN107946707A (en) * | 2017-10-26 | 2018-04-20 | 中山大学 | Balance bandpass filter and its design method based on right angled triangle paster structure |
| CN107946707B (en) * | 2017-10-26 | 2019-09-20 | 中山大学 | Balance bandpass filter and its design method based on right angled triangle paster structure |
| CN109193148A (en) * | 2018-09-16 | 2019-01-11 | 复旦大学 | A kind of four frequency range Circular polarized omni-directional RECTIFYING ANTENNAs |
| CN109193148B (en) * | 2018-09-16 | 2020-11-20 | 复旦大学 | Four-frequency-band omnidirectional circularly polarized rectifying antenna |
| CN113193317A (en) * | 2021-05-14 | 2021-07-30 | 南京智能高端装备产业研究院有限公司 | Double-passband power division filter adopting single-layer circular patch |
| CN113193317B (en) * | 2021-05-14 | 2022-05-03 | 南京智能高端装备产业研究院有限公司 | Double-passband power division filter adopting single-layer circular patch |
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