Impedance loaded SAW-sensors offer a wide range of measurement opportunities

Steindl, R.; Pohl, A.; Seifert, F.

doi:10.1109/mwsym.1999.780223

Cited by 25 publications

(7 citation statements)

References 2 publications

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“…RF system-level simulation is done to verify this protocol. The signal transmission is simulated in Cadence with the SPICE models [32][33]. The signal PSD at the reader antenna is shown in Figure 11.…”

Section: Wireless Transmissionmentioning

confidence: 99%

A wireless low-range pressure sensor based on P(VDF-TrFE) piezoelectric resonance

Kan

2010

Sensors and Actuators A: Physical

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A low-range bio-compatible pressure sensor based on P(VDF-TrFE) piezoelectric resonance has been tested and integrated to a wireless platform. Many critical physiological applications and in-vivo diagnosis require highly sensitive pressure monitoring in the 0-100kPa range, with negligible long-term drift and robust integration platform. The PVDF film and its copolymers exhibit significant piezoelectric properties after poling. P(VDF-TrFE) is preferred for its flexible film structure, low modulus, high yield strength and resistance to corrosive chemicals. All piezoelectric materials are lossy and thus the leakage current will cause drift of instantaneous response, which limits the direct use of piezoelectric charges in sensing.In this paper, the pressure sensor which adopts the appropriate properties of P(VDFTrFE) for low pressure levels, works as an acoustic wave resonator to avoid long-term

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Section: Wireless Transmissionmentioning

confidence: 99%

A wireless low-range pressure sensor based on P(VDF-TrFE) piezoelectric resonance

Kan

2010

Sensors and Actuators A: Physical

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“…were made. Sensors for the Tire Pressure Measuring System (TPMS) have been developed to monitor the tire pressure [14] as well as the friction between the tire and the road surface [19].…”

Section: ) Physical Sensing Functionsmentioning

confidence: 99%

Feasibility Study of Surface Acoustic Wave RFID for Information Processing Asset Management

Song

Chattopadhyay

Chu

et al. 2008

2008 IEEE International Conference on RFID

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Abstract-Business-to-business (B2B) market of information processing devices such as printers, copier, fax, database servers, data storage arrays and laptops is growing seamlessly and rapidly, especially in developing country. Radio Frequency Identification (RFID) system can be the most promising system for information technology (IT) asset management because of its well-developed level of technology, worldwide standards and its lower price than other wireless protocol such as WiFi, WiMAX, Bluetooth and so forth. However, RFID system for IT asset management in B2B environment is limited by several constraints. So, Surface Acoustic Wave based RFID at 2.4GHz and UHF passive RFID at 900MHz are discussed as a candidate of it. By analyzing objective data, estimating their future performance, and measuring the readability of SAW RFID system in the standard office, we concluded that the most hopeful candidate for B2B information processing device asset management is Surface Acoustic Wave technology based RFID because of its batteryless passive RFID characteristic, relatively long readable range and its potential, and inherent sensor capability and its expandability as well.

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“…Sensors of this type can be used as sectoralignment indicators, for checking switch positions, or generally as radio-access switches. In the same way also classical sensors with a varying impedance can be read out wirelessly when combined with a SAW transponder [13].…”

Section: Binary Saw Sensors and Programmable Reflectorsmentioning

confidence: 99%

Surface Acoustic Wave Devices for Sensor Applications

Scholl¹,

Schmidt

Wolff³

2001

phys. stat. sol. (a)

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Identification and sensor systems based on surface acoustic waves exhibit intriguing properties which have hitherto remained unexploited by semiconductor-based systems. They offer a long readout distance of up to more than 20 m with purely passive surface acoustic wave (SAW) devices. SAW devices operate with no battery or wiring, withstand extreme temperatures and work reliably and maintenance-free over many decades even in harsh industrial environments. Because they operate at frequencies in the GHz range, SAW identification and sensor systems are well protected from the electromagnetic interference that often occurs in the vicinity of industrial equipment such as motors and high-voltage lines. The fundamentals and design rules of numerous passive wireless SAW sensor and identification systems for industrial and domestic applications as well as relevant practical work will be presented.

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Impedance loaded SAW-sensors offer a wide range of measurement opportunities

Cited by 25 publications

References 2 publications

A wireless low-range pressure sensor based on P(VDF-TrFE) piezoelectric resonance

A wireless low-range pressure sensor based on P(VDF-TrFE) piezoelectric resonance

Feasibility Study of Surface Acoustic Wave RFID for Information Processing Asset Management

Surface Acoustic Wave Devices for Sensor Applications

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