The effect of Resonator Configurations on the optimized sensitivity in the Wireless Resistive Analog Passive (WRAP) sensors

Noroozi, Babak; Morshed, Bashir I.

doi:10.1109/eit.2019.8833894

Cited by 2 publications

(4 citation statements)

References 7 publications

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“…ð8Þ Figure 4 shows the PSC physical characteristics and equivalent circuit. Coil equivalent series resistor is defined in Equations (9)-(12) [14].…”

Section: Equationsmentioning

confidence: 99%

“…Since the PSC self-inductance has a critical influence on the sensitivity, the comparison of the calculation results between the different methods: Current Sheet [15], Modified Wheeler [15], Modified Grover [16], and Monomial Fit [16] showed that the Current Sheet has the minimum deviation from the experimental results. Therefore, the Current Sheet with Equation (14) has been adopted for the PSC self-inductance calculation [15].…”

Section: Equationsmentioning

confidence: 99%

“…Two adjacent tracks form a capacitor that is defined in Equation ( 12) [14]. Its dielectric splits between the board coating (air) and the PCB substrate (FR4) with the relative dielectric constant ε rc =1 and ε rs ¼ 4:4, respectively.…”

Section: Equationsmentioning

confidence: 99%

“…This configuration in which the primary and secondary tuning capacitors, C tp and C ts (Figure 2), are in parallel with the primary and secondary coils, is called parallel–parallel (PP). We have shown that PP arrangement as compared with three other possible arrangements (SP, SS, and PS) shows the best performance (highest sensitivity and lowest susceptibility to tolerance) [13]. The sensitivity in Equation () depends on the component values and the mutual inductance between the primary and the secondary coils, M , that is defined by the primary and secondary self‐inductances ( L P and L S ) and the coupling coefficient in Equation ().

M = k \sqrt{L_{P} L_{S}}

…”

Section: The Hardware Model and Equationsmentioning

confidence: 99%

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Design and optimization of printed spiral coils for wireless passive sensors

Noroozi

Morshed

2021

IET Wireless Sensor Systems

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Monitoring physiological signals during regular life might provide many benefits including early detection of abnormalities and tracking the severities of diseases. A wireless connection between the passive sensor and the scanner eliminates the obtrusive wires, resolves battery-related issues, and makes it easy-to-use. We have previously proposed a wireless resistive analogue passive sensor technique that operates with the help of inductive coupling. The variation of resistive physiological transducer (secondary side) leads to amplitude modulation on the scanner coil (primary side). The design of printed spiral coil (PSC) on printed circuit board, significantly affects the performance of the overall system in terms of sensitivity, the output voltage change as a reflection of the transducer change. To optimize the PSC's profile and maximize the sensitivity, we employ three methods: iterative, analytical, and genetic algorithm (GA). The GA optimized PSCs, as the best result, have been fabricated and the measurement showed a sensitivity of 0.72 mƱ which has 5% (8.8%) deviation from the simulation (theoretical) results. This method can be utilized to design a PSC pair in near-field applications to transfer amplitude modulation with various sizes and fabrication constraints. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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“…ð8Þ Figure 4 shows the PSC physical characteristics and equivalent circuit. Coil equivalent series resistor is defined in Equations (9)-(12) [14].…”

Section: Equationsmentioning

confidence: 99%