Dissertation Talk: Monolithic Wireless Transceiver Design
Presentation: Dissertation Talk: EE | May 7 | 10-11 a.m. | 490 Cory Hall
Filip Maksimovic, University of California, Berkeley
Modern wireless communication systems are trending in two diverging directions. On one hand is the high bandwidth, high data rate communication in cellular handsets and wireless backhaul that accommodates rapidly increasing demand for data. On the other hand, there is an exponential growth in quantity of small, low-power, low-data rate, wireless transceivers. This work focuses on monolithic integration and power minimization of these wireless devices. The first challenge is maximizing system efficiency while maintaining a low power budget so that the device can be powered by low capacity batteries or from harvested energy. The second challenge is complying with wireless standards (such as Bluetooth Low Energy and IEEE 802.15.4) without the use of any external components. The benefits of single-chip integration are reduced cost and ease of integration with wearable electronics and industrial sensors. It is a step towards making everything wireless and connected.
The single chip motes are a family of low-power wireless transceivers designed to operate without a high-quality off-chip frequency reference. The first of these devices successfully demonstrated packet-based compensation of the local oscillator in the presence of asymmetrical frequency drift. The second was a standards compatible transceiver that successfully demonstrated both mote-to-mote and mote-to-commercial radio communication. This transmitter operates with greater than 10% peak system efficiency with scalable output power between -20 dBm and -8 dBm, and can maintain standards compatible communication over the industrial temperature range.