An RF-Energy Harvester and IR-UWB Transmitter for Ultra-Low-Power Battery-Less Biosensors
| Autor: | Stefan Schmickl, Harald Pretl, Thomas Faseth |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Battery (electricity)
Materials science business.industry 020208 electrical & electronic engineering Transmitter Electrical engineering 02 engineering and technology Chip Power budget Power (physics) CMOS 0202 electrical engineering electronic engineering information engineering Wireless Radio frequency Electrical and Electronic Engineering Hardware_ARITHMETICANDLOGICSTRUCTURES business |
| Popis: | A fully integrated 802.15.4a-LRP-UWB-PHY- and ETSI-compliant impulse-radio ultra-wide-band (IR-UWB) transmitter (TX) front-end, powered by an RF-energy-harvester in 180 nm CMOS technology, is presented. The TX is working in the 7 GHz band transmitting with -42 dBm at 5.12 kbps data rate, consuming 1.89 μW. Two circuit implementations of RF-energy-harvesters are presented and, based on measurements, a combined and optimized structure is proposed which is capable of generating 5 μW dc-power at -13.3 dBm RF input power at a frequency of 868 MHz. According to the overall SoC power budget, this amount of harvested energy is sufficient to power the IR-UWB-TX front-end, an ADC with pre-amplifier and the digital core logic for a wireless bio-sensing chip. Furthermore, improvements of the presented IR-UWB TX circuitry are discussed. |
| Databáze: | OpenAIRE |
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