Digital phase correction for multiplexed ADCs in low-cost Six-Port interferometers

Lurz, Fabian; Dorn, Christian; Lindner, Stefan; Linz, Sarah; Mann, Sebastian; Weigel, Robert; Koelpin, Alexander

doi:10.1109/wisnet.2016.7444321

Cited by 5 publications

(1 citation statement)

References 9 publications

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“…These baseband voltages are then lowpass-filtered and amplified before they are digitized by, usually four simultaneously sampling, ADCs [ 108 ]. A single multiplexed or dual-ADC could also be used but with higher demands on the sampling rate and additionally necessary signal processing to compensate the phase error induced by the switching [ 109 ]. In general, a single simultaneous sample (on all four channels) is sufficient to determine the response frequency of the SAW.…”

Section: Time Domain Sampling and Tds Hybrid Conceptsmentioning

confidence: 99%

Reader Architectures for Wireless Surface Acoustic Wave Sensors

Lurz

Ostertag²,

Scheiner

et al. 2018

Sensors

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Wireless surface acoustic wave (SAW) sensors have some unique features that make them promising for industrial metrology. Their decisive advantage lies in their purely passive operation and the wireless readout capability allowing the installation also at particularly inaccessible locations. Furthermore, they are small, low-cost and rugged components on highly stable substrate materials and thus particularly suited for harsh environments. Nevertheless, a sensor itself does not carry out any measurement but always requires a suitable excitation and interrogation circuit: a reader. A variety of different architectures have been presented and investigated up to now. This review paper gives a comprehensive survey of the present state of reader architectures such as time domain sampling (TDS), frequency domain sampling (FDS) and hybrid concepts for both SAW resonators and reflective SAW delay line sensors. Furthermore, critical performance parameters such as measurement accuracy, dynamic range, update rate, and hardware costs of the state of the art in science and industry are presented, compared and discussed.

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Section: Time Domain Sampling and Tds Hybrid Conceptsmentioning

confidence: 99%