Nano Watt CMOS temperature sensor

Sahafi, Ali; Sobhi, Jafar; Koozehkanani, Ziaddin Daie

doi:10.1007/s10470-013-0046-6

Cited by 14 publications

(9 citation statements)

References 11 publications

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“…The strength of the antenna backscattering depends on the impedance of the antenna termination load. Therefore, by connecting the antenna to a temperature sensitive load, such as a microwave resonator [10], [14], a CMOS temperature sensor [15], [16], or a resistor [12], the temperature information can be encoded in the antenna backscattering and thus can be acquired wirelessly. The temperature sensitive load (the temperature sensor) can either be a low-power active component powered by energy harvested from the interrogation RF signal [13] or a passive component.…”

Section: Introductionmentioning

confidence: 99%

Microstrip Patch Antenna Temperature Sensor

2015

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The resonant frequencies of a microstrip patch antenna are dependent on the dielectric constant of its substrate and the physical dimensions of its radiation patch. Both of these parameters are temperature-dependent. In this paper, we investigated the effects of temperature on the antenna resonant frequencies for the purpose of studying the microstrip patch antenna as a temperature sensor. First, the relationship between the antenna resonant frequency shift and the temperature change is derived based on the transmission line model. To validate the theoretical prediction, antenna sensors bonded on different metal bases were tested in a temperature chamber. By comparing the measured temperature-frequency relationship with the theoretical predictions, we discovered that the dielectric constant of the substrate is not only dependent on temperature but also influenced by the base material. After calibrating the thermal coefficient of the substrate dielectric constant using the measurement data, the differences between the measurements and the theoretical predictions were within the expected systematic error of the reference thermocouple, validating that a microstrip patch antenna can serve as a temperature sensor.

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Section: Introductionmentioning

confidence: 99%

Microstrip Patch Antenna Temperature Sensor

2015

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“…The length (L) of all the transistors is in the range of 3 -20 μm. These transistor sizes were considered as to obtain a high resistance for better detection of temperature [17]. In practical, the temperature sensing core can be calibrated by measuring the die temperature (after fabrication) at a reference point.…”

Section: Results and Analysis 41 Temperature Sensing Core Outputmentioning

confidence: 99%

“…The temperature sensing circuit was developed based on self-stabilized feedback architecture [17]. A threshold-voltage, VT based is adapted where the circuit expresses temperature information as an output voltage.…”

Section: Temperature Sensing Corementioning

confidence: 99%

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CMOS based thermal detector for processor

Yang

Jubadi

2020

IJEECS

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<p>This project proposed a design of low power CMOS-based thermal detector which can detect the temperature of processor such as in Central Processing Unit. By re-designing temperature detector circuit using CMOS technology, the reduction in power consumption and area size of the thermal detector can be obtained. In this paper, the design of thermal detector consists of temperature sensing core, amplifier, and Analog to Digital Converter (ADC), respectively. The sensor was designed using 0.13 µm CMOS technology and operates by sensing the temperature of processor and produced a digital output value. The temperature detection range was setup between 0 °C to 80 °C with 10 °C resolution. The temperature detector was capable to show temperature readings in binary value. It consumed an average power of 558.2 µW and a space occupancy of 0.0118 mm².</p>

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“…There are two kinds of CMOS temperature sensor structures. One use the sub-threshold MOSFET to sense temperature and the other use parasitic bipolar transistor to sense the temperature 2 . The former structure is not stable and work well as the temperature sensor of integrated chip.…”

Section: Introductionmentioning

confidence: 99%