Application of SAW matched filters for time code division multiple access (TCDMA) systems

Zenzinger, A.; Zhang, Z.; Seifert, F.; Weigel, Robert

doi:10.1109/isssta.1996.563218

Cited by 4 publications

(2 citation statements)

References 6 publications

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“…Consequently SAW tapped delay lines with lithiumniobate or lithiumtantalate substrates (which would allow low insertion loss economical hardware solutions) (27,28,29) dont find widespread use yet, due to the high temperature sensitivity of theses materials. Quartz code MF would show a wide temperature operating range, but need more amplification and are restricted to poor SNR due to the low coupling coefficient.…”

Section: Js (W)hf-{l Dt= Max If S0(t)=h(-t)=h(-x/v)mentioning

confidence: 99%

Saw-Based Radio Sensor and Communication Techniques

Seifert

Weigel²

1997

27th European Microwave Conference, 1997

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Surface acoustic waves can be generated at the free surface of an elastic solid. This phenomenon has been exploited for electronic analog signal processing over the past 30 years, with the development of a host of devices and systems for consumer, commercial and military applications running at a some hundred million dollar annual rate. The objective of this paper is to provide an overview of the latest developments in the surface acoustic wave (SAW) field and to identify upcoming applications in remote sensing and communications. It. is intended to address some of the key issues in the successful design and manufacture of SAW devices and to discuss the operating principles from a microwave design viewpoint.

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Section: Js (W)hf-{l Dt= Max If S0(t)=h(-t)=h(-x/v)mentioning

confidence: 99%

Saw-Based Radio Sensor and Communication Techniques

Seifert

Weigel²

1997

27th European Microwave Conference, 1997

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“…In particular, by exploiting the sensitivity of piezoelectric substrate materials to physical parameters, it is possible to use SAW devices as temperature, humidity, and strain sensors [ 3 , 4 ], as well as for the detection of gases [ 5 ] and liquids [ 6 ]. Moreover, SAW devices are largely employed in telecommunications with more than three billion SAW components manufactured every year and used as band pass filters and resonators in radio receivers of mobile cell phones, base stations, and RF front ends [ 7 , 8 , 9 , 10 , 11 , 12 , 13 ]. Finally, they are employed in many other different areas, such as automotive [ 14 ] and bioengineering applications, where they are used, for instance, as microfluidic devices [ 15 , 16 , 17 ] by exploiting the fact that, by inducing an electric field and generating a mechanical wave, it is possible to pump and drive liquids.…”

Section: Introductionmentioning

confidence: 99%

On the Performance Evaluation of Commercial SAW Resonators by Means of a Direct and Reliable Equivalent-Circuit Extraction

et al. 2021

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Nowadays, surface acoustic wave (SAW) resonators are attracting growing attention, owing to their widespread applications in various engineering fields, such as electronic, telecommunication, automotive, chemical, and biomedical engineering. A thorough assessment of SAW performance is a key task for bridging the gap between commercial SAW devices and practical applications. To contribute to the accomplishment of this crucial task, the present paper reports the findings of a new comparative study that is based on the performance evaluation of different commercial SAW resonators by using scattering (S-) parameter measurements coupled with a Lorentzian fitting and an accurate modelling technique for the straightforward extraction of a lumped-element equivalent-circuit representation. The developed investigation thus provides ease and reliability when choosing the appropriate commercial device, depending on the requirements and constraints of the given sensing application. This paper deals with the performance evaluation of commercial surface acoustic wave (SAW) resonators by means of scattering (S-) parameter measurements and an equivalent-circuit model extracted using a reliable modeling procedure. The studied devices are four TO-39 packaged two-port resonators with different nominal operating frequencies: 418.05, 423.22, 433.92, and 915 MHz. The S-parameter characterization was performed locally around the resonant frequencies of the tested SAW resonators by using an 8753ES Agilent vector network analyzer (VNA) and a home-made calibration kit. The reported measurement-based study has allowed for the development of a comprehensive and detailed comparative analysis of the performance of the investigated SAW devices. The characterization and modelling procedures are fully automated with a user-friendly graphical user interface (GUI) developed in the Python environment, thereby making the experimental analysis faster and more efficient.

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