CN102571028B - Surface acoustic wave reflecting grating - Google Patents
Surface acoustic wave reflecting grating Download PDFInfo
- Publication number
- CN102571028B CN102571028B CN201210056787.4A CN201210056787A CN102571028B CN 102571028 B CN102571028 B CN 102571028B CN 201210056787 A CN201210056787 A CN 201210056787A CN 102571028 B CN102571028 B CN 102571028B
- Authority
- CN
- China
- Prior art keywords
- reflecting grating
- acoustic wave
- surface acoustic
- electrode
- reflecting
- 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.)
- Expired - Fee Related
Links
Abstract
The invention belongs to the technical field of electronic information, and relates to a surface acoustic wave reflecting grating, which comprises a plurality of reflecting grating electrodes. The surface acoustic wave reflecting grating is characterized in that: each reflecting grating electrode is 0.06 mu m thick and 0.1 mu m wide. The reflecting grating has high reflecting capability and low transmission loss, the problems about the reflecting coefficient and transmission loss of the reflecting grating in a 2.4GHz surface acoustic wave tag can be well solved, and the identification efficiency and accuracy of the tag can be improved.
Description
Affiliated technical field
The present invention relates to passive electronic label in electronic information technical field, particularly relate to a kind of hyperfrequency small size surface acoustic wave reflecting grating.
Background technology
The development of modern communications, requires to provide low-loss surface acoustic wave (surface acoustic wave, SAW) device.With respect to traditional SAW (Surface Acoustic Wave) device, the cardinal principle of low-loss SAW device is to utilize the reflection of grizzly bar, realizes the one way propagation of sound wave.In order in the process of design, the reflection of grizzly bar to be taken into account, must carry out necessary improvement to original method for designing.
Summary of the invention
The object of this invention is to provide a kind of can being operated under 2.4GHz, can reduce the loss of surface acoustic wave, and improve the surface acoustic wave reflecting grating of the albedo of reflecting grating.Technical scheme of the present invention is as follows:
A surface acoustic wave reflecting grating, comprises a plurality of reflecting grating electrodes, and reflecting grating thickness of electrode is 0.06 μ m, and width is 0.1 μ m.
As preferred implementation, described surface acoustic wave reflecting grating, the length of described reflecting grating electrode is 155 μ m, the spacing of electrode and electrode is 0.1 μ m.
Reflecting grating provided by the invention has very strong albedo and compared with low transmission loss, can solve reflection coefficient and the loss problem of reflecting grating in 2.4GHz surface acoustic wave label, improves recognition efficiency and the precision of label.
Accompanying drawing explanation
Fig. 1 reflecting grating dimensional structure of the present invention schematic diagram.
Fig. 2 reflecting grating dimensional structure of the present invention profile.
Fig. 3 (a) and (b) be respectively the S of reflecting grating electrode
11and S
12curve.
The relation curve of Fig. 4 reflection coefficient and reflecting grating number of electrodes.
The relation curve of Fig. 5 loss and reflecting grating number of electrodes.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.
Reflecting grating is device architecture the most basic in SAW (Surface Acoustic Wave) device, and what the present invention adopted is open circuit reflecting grating model, and accompanying drawing 1 and accompanying drawing 2 are the dimensional structure figure of one group of reflecting grating, and in figure, 1 is substrate, 2 electrodes that are reflecting grating.Main and the structure of reflecting grating of the reflection coefficient of reflecting grating is, relating to parameters such as the quantity of electrode, thickness, along with reducing of thickness of electrode, the attenuation coefficient of surface acoustic wave can reduce thereupon, on the other hand, due to reducing of thickness of electrode, the albedo of open-circuit gate also reduces thereupon, in order to take into account attenuation characteristic and the reflection characteristic of surface acoustic wave label, finally choosing thickness of electrode is 0.06 μ m, by the return loss S shown in accompanying drawing 3
11curve and loss S
21curve, known reflecting grating is applicable to the surface acoustic wave that frequency is 2.4GHz.The quantity of gate electrode is also the key factor that affects reflection coefficient, and along with the increase of reflecting grating number of electrodes, reflection coefficient can increase, but the loss of surface acoustic wave also can strengthen, as shown in accompanying drawing 4, accompanying drawing 5.Pass through series of optimum, the length and width of the gate electrode of surface acoustic wave reflecting grating and thickness are respectively 155 μ m, 0.1 μ m and 0.06 μ m, as shown in attached Fig. 1 and 2, and 6 reflecting grating electrodes form one group of reflecting grating, now, reflecting grating has very strong albedo and compared with low transmission loss, can well be applied in hyperfrequency surface acoustic wave label.
By the optimization to reflector structure, can effectively solve albedo and the loss problem of surface acoustic wave label, length and width and the thickness of by simulation optimization, finally determining the gate electrode of surface acoustic wave reflector are respectively 155 μ m, 0.1 μ m and 0.06 μ m, the spacing of electrode and electrode is 0.1 μ m, and every 6 reflecting grating electrodes form one group of reflecting grating, now, reflecting grating has very strong albedo and compared with low transmission loss, can well be applied in 2.4GHz surface acoustic wave label.
Claims (1)
1. a surface acoustic wave reflecting grating, adopts open circuit reflecting grating model, comprises 6 reflecting grating electrodes, it is characterized in that, reflecting grating thickness of electrode is 0.06 μ m, and width is 0.1 μ m; The length of described reflecting grating electrode is 155 μ m, and the spacing of electrode and electrode is 0.1 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210056787.4A CN102571028B (en) | 2012-03-06 | 2012-03-06 | Surface acoustic wave reflecting grating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210056787.4A CN102571028B (en) | 2012-03-06 | 2012-03-06 | Surface acoustic wave reflecting grating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102571028A CN102571028A (en) | 2012-07-11 |
| CN102571028B true CN102571028B (en) | 2014-10-15 |
Family
ID=46415618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210056787.4A Expired - Fee Related CN102571028B (en) | 2012-03-06 | 2012-03-06 | Surface acoustic wave reflecting grating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102571028B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109033552B (en) * | 2018-07-04 | 2023-01-31 | 中国船舶重工集团公司第七一九研究所 | Surface acoustic wave RFID chip reflection coefficient design method based on echo energy compensation |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101515792A (en) * | 2008-02-20 | 2009-08-26 | 爱普生拓优科梦株式会社 | Surface acoustic wave device and surface acoustic wave oscillator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0640613B2 (en) * | 1985-03-26 | 1994-05-25 | 和彦 山之内 | Surface acoustic wave resonator |
| BRPI0415227A (en) * | 2003-10-08 | 2006-12-05 | Rf Saw Components Inc | single phase unidirectional surface acoustic wave transducer and enhanced reflectors |
-
2012
- 2012-03-06 CN CN201210056787.4A patent/CN102571028B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101515792A (en) * | 2008-02-20 | 2009-08-26 | 爱普生拓优科梦株式会社 | Surface acoustic wave device and surface acoustic wave oscillator |
Non-Patent Citations (6)
| Title |
|---|
| finite element analysis of harmonic frequency for 2.4GHz SAW Tags;Xia Xiao等;《Electron Devices and Solid-State Circuits (EDSSC), 2011 International Conference of. IEEE》;20111118;第1-2页 * |
| JP昭61-220512A 1986.09.30 |
| JP特表2007-508752A 2007.04.05 |
| XiaXiao等.finiteelementanalysisofharmonicfrequencyfor2.4GHzSAWTags.《ElectronDevicesandSolid-StateCircuits(EDSSC) 2011 International Conference of. IEEE》.2011 |
| 基于频域采样的声表面波射频识别系统研究;朱华;《中国博士学位论文全文数据库》;20110415(第4期);第1-117页 * |
| 朱华.基于频域采样的声表面波射频识别系统研究.《中国博士学位论文全文数据库》.2011,(第4期),全文. |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102571028A (en) | 2012-07-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101325274A (en) | Bridle hand material composed of dendritic structure unit | |
| CN104112051A (en) | Element shape function based reflector antenna electromechanical integration design method | |
| CN107181066A (en) | A kind of double wideband polarization converters based on the super surface of anisotropy | |
| CN102781206B (en) | A kind of suction ripple Meta Materials | |
| CN102571028B (en) | Surface acoustic wave reflecting grating | |
| CN203278768U (en) | Surface acoustic wave resonator with metal lattice and weighted grid array | |
| CN106529646A (en) | Surface acoustic wave radio frequency identification tag with reflection gate structure | |
| CN1864327B (en) | Surface acoustic wave device | |
| CN103218011A (en) | Method for designing SOC (System on Chip)-based clock tree structure | |
| CN102663466A (en) | Surface acoustic wave label | |
| CN107515955A (en) | Based on the EB time domain finite element methods that continuously discontinuous gal the Liao Dynasty gold mixes | |
| CN109948195B (en) | Impedance modeling method for PCB RFID tag bent dipole antenna | |
| CN204667444U (en) | A kind of acoustic surface wave radio frequency identification label | |
| CN103778281A (en) | GaAs pHEMT pipe core nonlinear model parameter extraction method | |
| CN101533941B (en) | Multi-dimensional magnetic static wave type wavelet transformation and wavelet inverse transformation device | |
| CN102033976B (en) | Compact electromagnetic band gap structure for avoiding high-speed circuit noise | |
| CN201681414U (en) | Acoustic surface wave radio frequency electronic tag | |
| CN105430867B (en) | A kind of Dolby circuit for CCD camera | |
| CN103684473A (en) | High-speed serial-parallel conversion circuit based on FPGA | |
| CN203260043U (en) | Circuit for synchronously carrying out PIE decoding and CRC checking of ultra-high-frequency RFID | |
| CN202217767U (en) | Low-pass filter with transmission zero | |
| CN101667215B (en) | System for calculating and optimizing resonance impedance between cable and metal ground line | |
| CN102832906B (en) | Based on the clock delay control method of printed circuit board (PCB) | |
| JP4585340B2 (en) | Bus structure of integrated circuit board and its standing wave suppression method | |
| CN201976340U (en) | Impedance circuit board |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 |