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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Brown, J.K. Kuo-Ken Huang Ansari, E. Rogel, R.R. Yoonmyung Lee Wentzloff, D.D. |
| Copyright Year | 2013 |
| Description | Author affiliation: Univ. of Michigan, Ann Arbor, MI, USA (Kuo-Ken Huang; Ansari, E.; Rogel, R.R.; Yoonmyung Lee; Wentzloff, D.D.) || Cavium, Marlborough, MA, USA (Brown, J.K.) |
| Abstract | Future biomedical and internet-of-things applications are driving the volume of wireless sensors into the cubic-mm regime. At the mm-scale, complete integration is necessary, and operation within the limits of a micro-battery becomes a primary challenge [1]. With CMOS scaling and ultra-low-power circuits reducing battery volume, the antenna and crystal quickly become the largest components in a cubic-mm node. Higher-frequency operation and silicon-based timing circuits are critical to integrate these components. This paper presents a fully-integrated 9.8GHz impulse-radio ultra-wideband (IR-UWB) radio with an on-chip 2mm monopole and the option of wire-bonding to an off-chip antenna. The crystal is replaced with a novel temperature-compensated relaxation oscillator. Due to modern mm-scale battery limitations, the peak current draw must be <;100μA [2], far below typical radio power consumption. Furthermore, external capacitors are too large for mm-scale nodes; thus, duty-cycling only at the packet level is not an option. This IR-UWB radio includes current-limiting at the battery supply, and the integrated modem duty-cycles the RF front-end at the bit-level in order to operate from integrated storage capacitance. Finally, many recent transceivers operate at <;1V [3,4]; however the voltage of a micro-battery is 3.2~4.1V [2] and integrated conversion efficiency is <;80% [1,5]. Thus, this radio is designed to operate the RF blocks over the entire battery voltage range. |
| Sponsorship | IEEE Solid-State Circuits Soc. |
| Starting Page | 442 |
| Ending Page | 443 |
| File Size | 357113 |
| Page Count | 2 |
| File Format | |
| ISBN | 9781467345156 |
| ISSN | 01936530 |
| e-ISBN | 9781467345163 |
| DOI | 10.1109/ISSCC.2013.6487806 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2013-02-17 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Radio frequency Oscillators Capacitors Batteries Baseband Transceivers Sensors |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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