A Novel RF Induced DC Power Supply System for Integrated Ubiquitous Micro Sensor Devices

Sudou, M.; Takao, Hidekuni; Sawada, Kazuaki; Ishida, M.

doi:10.1109/sensor.2007.4300278

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…If CMOS DC-DC converter and voltage regulator is connected after the rectenna circuit, a proper supply voltage for the load devices can be obtained and stabilized. An integrated RF-induced power supply based on a low-power CMOS design technology for stabilized DC power supply to ubiquitous sensor devices has already been developed by our group [12]. Although the system in [12] does not integrate any sensor devices, it will be finally integrated with the RFpowered microsensors presented in this paper.…”

Section: Integrated Rectenna Circuitmentioning

confidence: 99%

RF-Powered Silicon-MEMS Microsensors for Distributed and Embedded Sensing Applications

Takao

Kizuna

Sawada

et al. 2007

2007 Fourth International Conference on Networked Sensing Systems

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In this paper, the concept and experimental results of Microwave-powered silicon microsensors for distributed and embedded sensing applications are presented. This is the first report of a microsensor device integrated with RF-DC power converter on the same chip. The integrated sensors are fabricated by silicon-MEMS (Micro Electromechanical Systems) technology. This time, 'fuse-type strain detector', and 'water-leakage sensing switch' are fabricated by silicon micromachining. Driving power of the integrated microsensors is provided as a remote RF-electromagnetic wave at 1.29GHz/1.45GHz, and received at the rectenna circuit on the microsensor. In the fabrication experiments, high-performance Surface Mount Devices (SMD) are integrated on the silicon microchip to realize the highest power efficiency. Mount holes of SMDs were formed by Deep-RIE of silicon with MEMS sensor structures without any additional process steps. Fabricated rectenna and sensors are successfully evaluated with LED mounted for signal output. The battery-less microsensor chip was successfully driven by a 10W/1.29GHz microwave power. Using a directional antenna as the power emission source, spread of microwave power is limited, and a longer distance of microwave power transmission is obtainable. The RF-powered microsensor node is very promising for various applications, and its conceptual prototype has been successfully fabricated.

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Section: Integrated Rectenna Circuitmentioning

confidence: 99%

RF-Powered Silicon-MEMS Microsensors for Distributed and Embedded Sensing Applications

Takao

Kizuna

Sawada

et al. 2007

2007 Fourth International Conference on Networked Sensing Systems

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“…Thus, we proposed a sensor node using an on-chip antenna for wireless communication and energy harvesting. [15][16][17][18][19][20][21] Figure 1 shows the concept of proposed the sensor node for implantable wireless medical devices, which is a chip that includes a sensor, a battery unit, a radio frequency circuit, and an antenna. Thus far, our group has fabricated a transmitter and a rectenna as the energy harvester using an on-chip antenna.…”

Section: Introductionmentioning

confidence: 99%

High-gain on-chip antenna using a sapphire substrate for implantable wireless medical systems

Okabe

Akita

Ishida

2014

Jpn. J. Appl. Phys.

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This paper presents a high-gain on-chip antenna using a sapphire substrate for implantable wireless medical systems. The antenna model is based on a dipole and the antenna elements are appropriately rolled for impedance matching. The center frequency of the fabricated on-chip antenna was measured as 360 MHz. The return loss was −3.58 dB and the input impedance was 190.5 − j74.7 Ω at 360 MHz. The maximum antenna gain of the fabricated on-chip antenna was −29.2 dBi. The on-chip antenna using a sapphire substrate achieved a 12.9 dB higher gain than that using a silicon substrate and successfully induced signal transmission at a distance of 10 cm with a transmitter chip. The implemented on-chip antenna can improve the power efficiency of implantable wireless medical systems by 95%.

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“…A RF-DC power conversion system designed in CMOS technology at 906 MHz [3], achieved 1 V DC output at 0.3 µA for a received power of 5.5 µW (−22.6 dBm). In [4] by boosting and regulating the received power from a mobile phone using surface mount devices on a silicon chip obtained 4.0 V at 1 mA to power the sensors periodically for 10 mS. Authors in [5,6] used resonance circuit transformation with a RF-DC Schottky-Diode charge pump for 50 Ω impedance at 900 MHz and 300 MHz respectively.…”

Section: Introductionmentioning

confidence: 99%

Design of Rf Energy Harvesting System for Energizing Low Power Devices

Din¹,

Chakrabarty²,

Ismail³

et al. 2012

PIER

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Abstract-Electromagnetic energy harvesting holds a promising future for energizing low power electronic devices in wireless communication circuits. This article presents an RF energy harvesting system that can harvest energy from the ambient surroundings at the downlink radio frequency range of GSM-900 band. The harvesting system is aimed to provide an alternative source of energy for energizing low power devices. The system design consists of three modules: a single wideband 377 Ω E-shaped patch antenna, a pi matching network and a 7-stage voltage doubler circuit. These three modules were fabricated on a single printed circuit board. The antenna and Pi matching network have been optimized through electromagnetic simulation software, Agilent ADS 2009 environment. The uniqueness of the system lies in the partial ground plane and the alignment of induced electric field for maximum current flow in the antenna that maximizes the captured RF energy. The design and simulation of the voltage doubler circuit were performed using Multisim software. All the three modules were integrated and fabricated on a double sided FR 4 printed circuit board. The DC voltage obtained from the harvester system in the field test at an approximate distance of 50 m from GSM cell tower was 2.9 V. This voltage was enough to power the STLM20 temperature sensor.

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A Novel RF Induced DC Power Supply System for Integrated Ubiquitous Micro Sensor Devices

Cited by 3 publications

References 4 publications

RF-Powered Silicon-MEMS Microsensors for Distributed and Embedded Sensing Applications

RF-Powered Silicon-MEMS Microsensors for Distributed and Embedded Sensing Applications

High-gain on-chip antenna using a sapphire substrate for implantable wireless medical systems

Design of Rf Energy Harvesting System for Energizing Low Power Devices

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