CN204271244U - A kind of collection of energy antenna mixing piezoelectric - Google Patents
A kind of collection of energy antenna mixing piezoelectric Download PDFInfo
- Publication number
- CN204271244U CN204271244U CN201420537536.2U CN201420537536U CN204271244U CN 204271244 U CN204271244 U CN 204271244U CN 201420537536 U CN201420537536 U CN 201420537536U CN 204271244 U CN204271244 U CN 204271244U
- Authority
- CN
- China
- Prior art keywords
- layer
- antenna
- energy
- piezoelectric
- adopts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Landscapes
- Details Of Aerials (AREA)
Abstract
The utility model discloses a kind of collection of energy antenna mixing piezoelectric, have the function that radio-frequency (RF) energy collects antenna and piezoelectric type vibration energy harvester concurrently.It is 2.45GHz and 1.9GHz that described radio-frequency (RF) energy collects Antenna Operation frequency range, adopts stepped construction, and have 5 layers altogether from top to bottom, wherein the 1st layer, the 3rd layer, the 5th layer is metal level, and the 2nd layer, the 4th layer is dielectric layer.The method that antenna feed adopts single feedback and couple feed to combine, the 1st layer adopts coaxial feed, and the 3rd layer adopts couple feed.Employing BNT piezoelectric ceramic mixes piezoelectric as dielectric layer material with epoxy glass fiber, and outer ring adopts the BNT piezoelectric ceramic that dielectric constant is high, and the epoxy glass fiber material that center dielectric constant is low, can reduce entire physical size greatly.And the mixing dielectric layer that does of piezoelectric and 3 layers of metal level can form the piezoelectric type vibration energy harvester of a stepped construction.The utility model can collect the electromagnetic wave energy of piezoelectric type vibration energy and mobile phone and WiFi simultaneously.
Description
Technical field
The utility model belongs to environmental energy and gathers field, is specifically related to a kind of piezoelectric type vibration and radio frequency electromagnetic collection of energy antenna, can be applicable to the Power supply of wireless sensor node and other low power dissipation electron equipment.
Background technology
Radio-frequency electromagnetic wave energy and mechanical vibrational energy are two kinds of ubiquitous environmental energy resources.Mechanical vibrational energy is collected piezoelectric type, electrostatic and induction three kinds of working methods, and these three kinds of modes can obtain the Energy transmission of microwatt to milliwatt.But, piezoelectric type energy gatherer can be integrated well with MEMS technology, and have Energy transmission density large, power supply need not be started, electricity energy harvester structure simply, is not generated heat, without electromagnetic interference, pollution-free, life-span almost infinitely, be easy to processing and fabricating and realize numerous advantage such as microminiaturization of mechanism.And cost is low, the plurality of advantages such as trouble that do not connect up are therefore for popular to people.Piezoelectric ceramic belongs to the one of piezoelectric, and compare with other piezoelectrics, piezoelectric ceramic piezoelectricity is strong, dielectric constant is high, can be processed into arbitrary shape, but when the direct dielectric material as pcb board uses, its dielectric constant is higher.
In recent years, wireless radiofrequency delivery of energy is more and more subject to people's attention.Complete the energy output system test of AC-to DC in laboratory as far back as Brown W.C. in 1975, it is utilize aluminum strip to make half-wave dipole antenna composition that the radio-frequency (RF) energy of test collects antenna, is the rectification efficiency that 2.45GHz obtains 54% in operating frequency.Korea S scholar Young in 2002 ?Ho Suh and Taiwan's scholars Kai Chang design a kind of high efficiency double frequency RECTIFYING ANTENNA for wireless energy transfer, design frequency range is 2.45GHz and 5.8GHz.
Because radio-frequency (RF) energy is subject to the restriction of environment and time factor hardly, can continue uninterruptedly to provide energy.In recent years, along with developing rapidly of the communication technology, people live in surrounding environment and are flooded with a large amount of radio wave signals, some important radio-frequency signal sources comprise WLAN (wireless local area network) (WiFi), industrial communication (ISM) frequency range and cellular base station (GSM), wherein electromagnetic wave in cellular base station uninterrupted radiation in 24 hours, almost can regard a stable signal source as.And RECTIFYING ANTENNA is a wherein key technology, RECTIFYING ANTENNA is collected the parts such as antenna, low pass filter, impedance matching network and rectification circuit and is formed by radio-frequency (RF) energy, it is by the electromagnetic wave in reception environment, the electromagnetic wave received is converted to direct current energy and exports.At present, in RECTIFYING ANTENNA, the form of radio-frequency (RF) energy collection antenna mainly contains single-stage sub antenna, dipole antenna and microstrip antenna 3 kinds of forms.Microstrip antenna because of its have that volume is little, lightweight, receiving area is large, polarization mode flexibly, conveniently organizes battle array, the advantage such as easy of integration and easy processing, be widely used in radio-frequency (RF) energy in RECTIFYING ANTENNA in recent years and collect the design of antenna.
Because single environmental energy is limited, such as single radio-frequency electromagnetic wave energy or mechanical vibrational energy usually can not meet the energy supply demand of radio-based electronic devices; Consider the diversity of environment in addition, be operated in the area that electromagnetic wave signal is poor, radio-frequency (RF) energy is collected the radio-frequency (RF) energy that collects of antenna and will greatly be reduced, so need to adopt mixed tensor gathering system to provide the energy for radio-based electronic devices.Piezoelectric type vibration energy harvester and radio-frequency (RF) energy are collected together with antenna does by the utility model, and the module of two kinds of collecting energies can be worked simultaneously also can single work, and two kinds of energy acquisitions can not disturb mutually.Effectively solve energy supply problem when low-consumption wireless electronic equipment works in multiple environment.
Summary of the invention
The purpose of this utility model is to provide a kind of collection of energy antenna mixing piezoelectric, vibrational energy and radio-frequency electromagnetic wave energy can be collected simultaneously, can be applicable to the energy supply of the low power dissipation electron such as radio sensing network, RFID equipment, to break away from the constraint of battery, reduce costs, reduce volume, be easy to carry, large-scale application can be suitable for.
In order to solve above technical problem, the concrete technical scheme that the utility model adopts is as follows:
A kind of mixing piezoelectric collection of energy antenna, is characterized in that: have the function that radio-frequency (RF) energy collects antenna and piezoelectric type vibration energy harvester concurrently, adopt stepped construction, have 5 layers altogether from top to bottom; 1st layer, the 3rd layer, the 5th layer is metal level, forms the metallic member of piezoelectric vibration series connection pole plate and antenna simultaneously; Described radio-frequency (RF) energy collects the method that antenna feed adopts single feedback and couple feed to combine, and the 1st layer adopts coaxial feed, and the 3rd layer adopts couple feed;
2nd layer, the 4th layer is dielectric layer; Described dielectric layer comprises BNT piezoceramics layer and epoxy glass fiber layer, and the outer ring of dielectric layer is BNT piezoceramics layer, and the center of dielectric layer is epoxy glass fiber layer.
Described 1st layer and described 2nd layer and described 3rd layer of formation antenna A; The 3rd layer of ground of the reference as antenna A pole plate, the 1st layer of antenna A is rectangular patch structure, increases little rectangle minor matters the rectangular patch structural edge of described 1st layer, to reduce the size of integrated antenna further; The operating frequency of described antenna A is at 2.45GHz.
Described the 3rd layer and described 4th layer and described 5th layer of formation antenna B; The described 5th layer of reference as antenna B ground pole plate; A cannelure is driven, to widen the bandwidth of integrated antenna on described 3rd layer of surface; The operating frequency of described antenna B is at 1.9GHz.
Described one mixing piezoelectric collection of energy antenna, is characterized in that: the 3rd layer of described metal both as reference the ground pole plate of antenna A, again as the radiation patch layer of antenna B.
The course of work of the present utility model is as follows:
Radio-frequency (RF) energy is collected antenna and is adopted stepped construction, and have 5 layers altogether from top to bottom, wherein the 1st layer, the 3rd layer, the 5th layer is metal level, and the 2nd layer, the 4th layer is dielectric layer.Described 1st layer and described 2nd layer and described 3rd layer of formation antenna A, the 3rd layer of ground of the reference as antenna A pole plate, the 1st layer of antenna A is designed to rectangular patch structure, little rectangle minor matters are increased the rectangular patch structural edge of described 1st layer, described 1st layer adopts coaxial feed, and the operating frequency of described antenna A is 2.45GHz; Described the 3rd layer and described 4th layer and described 5th layer of formation antenna B, a cannelure is driven on the 3rd layer of surface, and the 5th layer of ground of the reference as antenna B pole plate, the 3rd layer adopts couple feed, and the operating frequency of antenna B is 1.9GHz.First according to the size of the two-layer paster antenna of parameter estimation such as dielectric constant, thickness of Microstrip Receiving Antenna working frequency range, medium, then simulation optimization is carried out by the HFSS of Ansoft company, obtain the domain that best radio-frequency (RF) energy collects antenna, make radio-frequency (RF) energy according to the yardstick of this domain and collect antenna material object, then carry out testing improvement to material object, the radio-frequency (RF) energy finally obtaining needing collects antenna.
Piezoelectric type vibration energy harvester also adopts stepped construction, antenna duplexer metal level and dielectric layer is collected with radio-frequency (RF) energy, dielectric layer material adopts the mixing piezoelectric of BNT piezoelectric ceramic and epoxy glass fiber, the outer ring of dielectric layer adopts BNT piezoelectric ceramic, and the center of dielectric layer adopts epoxy glass fiber.Overall dielectric constant controls between 50 ~ 100.Two layer medium layer is made into unanimously, and make its eigentone consistent, the signal of telecommunication so produced is identical waveform, these two signal of telecommunication superpositions, just be equivalent to two voltage source series connection, the described 1st layer of positive plate as piezoelectric vibration energy gatherer, the 5th layer as negative plate.
The utility model has beneficial effect
The utility model is by adopting the dielectric material of BNT piezoelectric ceramic and epoxy glass fiber mixing, suitably can increase the dielectric constant of medium on the one hand, reduce the size of antenna, on the other hand, the dielectric layer that described mixing piezoelectric does and 3 layers of metal level can form the piezoelectric type vibration energy harvester of a stepped construction, gather radio frequency energy and vibrational energy simultaneously; By the method adopting single feedback and couple feed to combine, overcome the defect that additional electrical sensibility reciprocal is introduced in direct feed, improve radiation efficiency and the gain of antenna B; Be cascaded structure by design piezoelectric type vibration energy harvester, increase output voltage; By increasing little rectangle minor matters the rectangular patch structural edge of described 1st layer, the size of integrated antenna can be reduced further; By driving a cannelure on the 3rd layer of surface, thus widen the bandwidth of integrated antenna.
Accompanying drawing explanation
Fig. 1 is vertical view of the present utility model.
Fig. 2 is profile of the present utility model;
In figure: 1-the 1st layer, 2-distributing point, the little rectangle minor matters of 3-, 4-the 3rd layer, 5-the 5th layer, 6-cannelure, 7-BNT piezoceramics layer, 8-epoxy glass fiber layer.
Embodiment
As shown in Figure 1, a kind of collection of energy antenna mixing piezoelectric of the utility model, has the function that radio-frequency (RF) energy collects antenna and piezoelectric type vibration energy harvester concurrently.Described radio-frequency (RF) energy is collected antenna and is adopted stepped construction, take printing board PCB as manufacturing process, and as shown in Figure 2, have 5 layers altogether from top to bottom, wherein the 1st layer, the 3rd layer, the 5th layer is metal level to profile, and the 2nd layer, the 4th layer is dielectric layer.Described 1st layer and described 2nd layer and described 3rd layer of formation antenna A, the 1st layer adopts coaxial feed, the 3rd layer of ground pole plate as antenna A; Described the 3rd layer and described 4th layer and described 5th layer of formation antenna B, the 3rd layer adopts couple feed, the 5th layer of ground pole plate as antenna B.Dielectric layer adopts the mixing piezoelectric of BNT piezoceramic material and epoxy glass fiber, and the outer ring of dielectric layer adopts BNT piezoceramic material, and the center of dielectric layer adopts epoxy glass fiber, and overall dielectric constant controls between 50 ~ 100.Constitute the integrated energy collecting device that radio-frequency (RF) energy collects antenna and piezoelectric type vibration energy harvester.
Radio-frequency (RF) energy is collected antenna and is adopted microstrip line construction to realize, its physical size obtains after all carrying out calculating and simulation optimization by the HFSS software of Ansoft company, and single-layer medium thickness is 1.5mm, and dielectric constant is between 50 ~ 100, metal is copper, thickness 0.018mm.
Claims (4)
1. mix a collection of energy antenna for piezoelectric, it is characterized in that: adopt stepped construction, have 5 layers altogether from top to bottom; 1st layer, the 3rd layer, the 5th layer is metal level, forms the metallic member of piezoelectric vibration series connection pole plate and antenna simultaneously; Radio-frequency (RF) energy collects the method that antenna feed adopts single feedback and couple feed to combine, and the 1st layer adopts coaxial feed, and the 3rd layer adopts couple feed;
2nd layer, the 4th layer is dielectric layer; Described dielectric layer comprises BNT piezoceramics layer and epoxy glass fiber layer, and the outer ring of dielectric layer is BNT piezoceramics layer, and the center of dielectric layer is epoxy glass fiber layer.
2. a kind of collection of energy antenna mixing piezoelectric according to claim 1, is characterized in that: described 1st layer and described 2nd layer and described 3rd layer of formation antenna A; The 3rd layer of ground of the reference as antenna A pole plate, the 1st layer of antenna A is rectangular patch structure, increases rectangle minor matters, to reduce the size of integrated antenna further the rectangular patch structural edge of described 1st layer; The operating frequency of described antenna A is at 2.45GHz.
3. a kind of collection of energy antenna mixing piezoelectric as claimed in claim 1, is characterized in that: described the 3rd layer and described 4th layer and described 5th layer of formation antenna B; The described 5th layer of reference as antenna B ground pole plate; A cannelure is driven, to widen the bandwidth of integrated antenna on described 3rd layer of surface; The operating frequency of described antenna B is at 1.9GHz.
4. a kind of collection of energy antenna mixing piezoelectric as claimed in claim 1, is characterized in that: the 3rd layer of described metal both as antenna A reference ground pole plate, again as the radiation patch layer of antenna B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420537536.2U CN204271244U (en) | 2014-09-18 | 2014-09-18 | A kind of collection of energy antenna mixing piezoelectric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420537536.2U CN204271244U (en) | 2014-09-18 | 2014-09-18 | A kind of collection of energy antenna mixing piezoelectric |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204271244U true CN204271244U (en) | 2015-04-15 |
Family
ID=52806091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420537536.2U Withdrawn - After Issue CN204271244U (en) | 2014-09-18 | 2014-09-18 | A kind of collection of energy antenna mixing piezoelectric |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204271244U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218308B (en) * | 2014-09-18 | 2016-08-17 | 江苏大学 | A kind of collection of energy antenna mixing piezoelectric |
| CN104993604B (en) * | 2015-05-26 | 2017-06-27 | 江苏大学 | A kind of cylinder type electromagnetic wave and vibrational energy mixed collection device |
-
2014
- 2014-09-18 CN CN201420537536.2U patent/CN204271244U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218308B (en) * | 2014-09-18 | 2016-08-17 | 江苏大学 | A kind of collection of energy antenna mixing piezoelectric |
| CN104993604B (en) * | 2015-05-26 | 2017-06-27 | 江苏大学 | A kind of cylinder type electromagnetic wave and vibrational energy mixed collection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Bakkali et al. | A dual‐band antenna for RF energy harvesting systems in wireless sensor networks | |
| CN104167826A (en) | Linear polarized incident electromagnetic wave perfect reception wireless energy flat | |
| Ramesh et al. | Microstrip antenna designs for RF energy harvesting | |
| CN106159459B (en) | A kind of three frequency polarized insensitive electromagnetic energy collection structure unit and collect surface | |
| CN103856149B (en) | A kind of integrated hybird environment energy collecting device | |
| Chaari et al. | Wireless power transmission for the internet of things (iot) | |
| Barcak et al. | Efficient RF energy harvesting by using multiband microstrip antenna arrays with multistage rectifiers | |
| CN106301011A (en) | A kind of micro-strip rectification circuit based on double frequency impedance matching | |
| Shao et al. | A planar dual-band antenna design for RF energy harvesting applications | |
| Taha et al. | Simulating of RF energy harvesting micro-strip patch antenna over 2.45 GHz | |
| CN102255527B (en) | Novel microwave intermodulation rectification circuit | |
| CN105048608A (en) | Energy collection rectifier for environmental electromagnetic wave | |
| CN104218308B (en) | A kind of collection of energy antenna mixing piezoelectric | |
| CN204271244U (en) | A kind of collection of energy antenna mixing piezoelectric | |
| CN103311646B (en) | Based on the RECTIFYING ANTENNA of microwave photon structure | |
| Chiu et al. | An ambient RF powered wireless sensor system | |
| Krishnamoothy et al. | Design and implementation of microstrip antenna for energy harvesting charging low power devices | |
| Bakkali et al. | Design and simulation of dual-band RF energy harvesting antenna for WSNs | |
| Taha | Design of quad band microstrip patch antenna for electromagnetic energy harvesting applications | |
| CN203423257U (en) | Series-connected T-shaped microstrip antenna | |
| Sennouni et al. | Efficient rectenna design incorporating new circularly polarized antenna array for wireless power transmission at 2.45 GHz | |
| Jose et al. | A review of RF energy harvesting systems in India | |
| Fadel et al. | A concurrent 915/2440 MHz RF energy harvester | |
| CN205622523U (en) | Efficient microwave rectifier of broadband | |
| Wang et al. | Rectanna design for energy harvesting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150415 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |