SURFACE ACOUSTIC WAVE FILTERS: RUSSIAN CONTRIBUTION TO THE DEVELOPMENT OF TELECOMMUNICATIONS SYSTEMS

Author(s):  
Ю.В. ГУЛЯЕВ ◽  
А.С. БАГДАСАРЯН ◽  
Т.В. СИНИЦЫНА

Представлена ретроспектива развития технологии поверхностных акустических волн (ПАВ) - одной из самых инновационных в мире. Неоспоримый вклад в динамику развития техники ПАВ внесли российские ученые, результаты теоретических исследований которых, внедренные в промышленное производство, позволили реализовать широкий спектр устройств, обеспечивающих прием, обработку и передачу информации с минимальными искажениями в таких областях, как телевидение, сотовая связь, навигация, радиочастотная идентификация и, конечно, техника специального назначения. Приведены важнейшие результаты исследований по каждому направлению. The article shows a retrospective of the development of surface acoustic wave (SAW) technology, which remains one of the most innovative technologies in the world. The undeniable contribution to the dynamics of SAW technology has been made by Russian scientists, whose theoretical studies, introduced into industrial production, have made it possible to implement a wide range of devices providing reception, processing, and transmission of information with minimal distortion in such areas as television, cellular communications, navigation, radio frequency identification, and of course special-purpose techniques. The most important results of research in each direction are presented.


Author(s):  
Han Tao ◽  
Shui Yongan

This chapter overviews a complementary technology to the integrated circuit based radio frequency identification (RFID)---- Surface Acoustic Wave (SAW) based RFID. The fundamental principle and applications of SAW RFID are presented. In order to guarantee the encoding capacity and reliable reading range, the design criteria in coding scheme, tag design and a time domain interrogated reader design are discussed in detail. As an example, a low-cost SAW RFID system applied in poultry farming management is introduced.







2009 ◽  
Vol 16-19 ◽  
pp. 1043-1047
Author(s):  
Sun Wei ◽  
Li Hua Dong ◽  
Yao Hua Dong

In the domain of manufacture and logistics, Radio Frequency Identification (RFID) holds the promise of real-time identifying, locating, tracking and monitoring physical objects without line of sight due to an enhanced efficiency, accuracy, and preciseness of object identification, and can be used for a wide range of pervasive computing applications. To achieve these goals, RFID data has to be collected, filtered, and transformed into semantic application data. However, the amount of RFID data is huge. Therefore, it requires much time to extract valuable information from RFID data for object tracing. This paper specifically explores options for modeling and utilizing RFID data set by XML-encoding for tracking queries and path oriented queries. We then propose a method which translates the queries to SQL queries. Based on the XML-encoding scheme, we devise a storage scheme to process tracking queries and path oriented queries efficiently. Finally, we realize the method by programming in a software system for manufacture and logistics laboratory. The system shows that our approach can process the tracing or path queries efficiently.



2021 ◽  
Author(s):  
Junyao Shen ◽  
Sulei Fu ◽  
Rongxuan Su ◽  
Huiping Xu ◽  
Zengtian Lu ◽  
...  


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