A 1.53 mm3 crystal-less standards-compliant Bluetooth Low Energy module for volume constrained wireless sensors
| Autor: | Kannan Aryaperumal Sankaragomathi, Dan Yeager, Nivi Arumugam, R. Parker, Pouya Kavousian, Lori Callaghan, David Barkin, Sean Korhummel, Nate Pletcher, Bob Wiser, Brian Otis, Rich Ruby, Justin Schauer |
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| Rok vydání: | 2019 |
| Předmět: |
business.industry
Computer science 020208 electrical & electronic engineering Transmitter Volume (computing) Electrical engineering Wearable computer 020206 networking & telecommunications 02 engineering and technology Crystal (programming language) Resonator 0202 electrical engineering electronic engineering information engineering Wireless Electronics business Electrical impedance |
| Zdroj: | VLSI Circuits |
| DOI: | 10.23919/vlsic.2019.8777950 |
| Popis: | Highly miniaturized wireless sensors will enable new healthcare sensing modalities such as ultra-small wearables, implantables, smart pills, etc. Bluetooth Low Energy (BLE) links to sensors improves user experience but necessitate a highly integrated, miniaturized BLE transmitter. Commercially available BLE transmitters are often unsuitable as they need a quartz crystal and multiple bulky external components, and are unable to operate from small silver oxide batteries which can have source impedances >40 Ω. While crystal-free transmitters have been published [1], they are either not standards compliant or remain research prototypes. In this paper, we present an FBAR-based (thin-Film Bulk Acoustic wave Resonator) [2] standards compliant BLE broadcaster module with an operating temperature range of 15C to +70C suitable for mass-produced volume-constrained sensors. All necessary electronics including the 65nm CMOS chip and FBAR frequency reference are integrated in a module with a volume of 1.53 mm3 (lowest reported to date). |
| Databáze: | OpenAIRE |
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