24 GHz Direct Conversion Transceiver for Sensor Networks

Mark, S. von der; Huber, M.; Boeck, Georg

doi:10.1109/wcnc.2007.93

Cited by 3 publications

(2 citation statements)

References 10 publications

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“…Reliable data transmission has been demonstrated without the LNA in the receiver, lowering the receiver power consumption to continuous 90 mW [18]. The packet error rate was below 10% for up to 5 cm transmission distance (see Fig.…”

Section: Resultsmentioning

confidence: 99%

Design Concepts and First Implementations for 24 GHz Wireless Sensor Nodes

Mark¹,

Huber²,

Boeck

2007

JCM

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This paper reviews proposed realization concepts and achievements of wireless sensor nodes and focuses on new developments in the 24 GHz frequency range. The relatively high frequency offers the advantage of ultra miniaturization and therefore opens new application fields. On the other hand power consumption of the RF-front-end becomes still more challenging than at lower frequencies. It is shown that by applying very simple CMOS transceiver architectures and modulation schemes combined with innovative efficient wake-up concepts, very low energy consumption can be achieved. Technological realization concepts and first experimental results from a 24 GHz demonstrator as well as novel special purpose wakeup-circuitry are presented, too.

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Section: Resultsmentioning

confidence: 99%

Design Concepts and First Implementations for 24 GHz Wireless Sensor Nodes

Mark¹,

Huber²,

Boeck

2007

JCM

Self Cite

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“…The interferometry systems send a signal and measure the reflection from sensor nodes by a direct conversion receiver [17][18][19][20]. The chip-based sensing nodes have a separate sensor, a digitizer, and a direct conversion modulator [21,22]. Using chips make multi-node networks possible but a higher received signal strength is required for powering-up the sensor and micro-controller chips.…”

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confidence: 99%

An Unpowered Sensor Node for Real-Time Water Quality Assessment (Humic Acid Detection)

et al. 2018

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A zero-power microwave sensor is reported for the real-time assessment of water quality. The proposed structure is able to transmit sensed data directly to a base-station without additional data processing at the wireless sensor node (WSN) which results in less power consumption. The base-station propagates a single tone signal at the frequency of f0/2. At the sensing node, an antenna absorbs that signal and a passive frequency doubler makes its frequency twice, i.e., f0, which will be used as the carrier signal. Two pairs of open-ended coaxial probes are used as liquid sensors; one inside a known reference sample and the other one inside the water under test. A combination of both sensors’ data will be sent to the base-station. A special six-port structure is used for modulation of sensed data over the carrier. At the base-station, a receiver will demodulate the received signal for extracting the sensed data. As an example, the system has been evaluated at f0 = 2.45 GHz for the detection of Humic-Acid levels as a common contaminant of river waters.

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A ZERO-Power Sensor Using Multi-Port Direct-Conversion Sensing

Mirzavand

Mousavi

2018

IEEE Sensors J.

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24 GHz Direct Conversion Transceiver for Sensor Networks

Cited by 3 publications

References 10 publications

Design Concepts and First Implementations for 24 GHz Wireless Sensor Nodes

Design Concepts and First Implementations for 24 GHz Wireless Sensor Nodes

An Unpowered Sensor Node for Real-Time Water Quality Assessment (Humic Acid Detection)

A ZERO-Power Sensor Using Multi-Port Direct-Conversion Sensing

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