A − 10 dBm 5 Mbps Energy-Efficient Injection-Locked FSK Transceiver for Wireless Body Sensor Networks

ABSTRACT

In this paper, a new technique is proposed to transmit the data, which enjoys less energy consumption comparing the existence techniques. It is applied to an ultra-low power 915 MHz 5 Mbps injection-locked FSK RF transceiver. This transceiver, which consumes less than 1.1 mA from a 0.7 V supply, is suitable for wireless body sensor network applications. The power consumption is 63 and 82.6 pJ/b at a transmitted power of –10 dBm with a data rate of 5 Mbps in transmitter and receiver modes, respectively. Post layout simulation results that has been done with cadence software in a 0.18 μm CMOS technology, confirm a 55% reduction in power consumption in the transmitter mode comparing the similar techniques reported by other researchers. The layout of the proposed transceiver is 0.284 mm².

KEYWORDS:

• Energy efficient
• FSK
• injection lock
• power oscillator
• transceiver

Additional information

Notes on contributors

Hamid Jangi Bahador

Hamid Jangi Bahador received BSc degree from Iran University of Science and Technology in 2004, the MSc degree from Sharif University in Tehran, Iran in 2007, all in electrical engineering. His research interests are data converter design, mixed signal circuitsg design, and RF-integrated circuits. He is currently a PhD student in Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran.

E-mail: [email protected]

Ziaadin Daie Koozehkanani

Ziaadin Daie Koozekanni received his PhD degree in electrical engineering from the Brunel University of West London, UK in 1996. He has been teaching as an assistant professor in the University of Urmia from 1996 to 2004 and in the University of Tabriz since 2004. At the time being, he works as an associate professor in Faculty of Electrical and Computer Engineering, University of Tabriz and his position is dean of ECE faculty. His current scientific interests are analogue-integrated circuit design, data converters, RF IC design, and optical filter design.

E-mail: [email protected]

Hossein Balazadeh Bahar

Hossein Balazadeh Bahar is a professor of electrical engineering, Faculty of Engineering of Tabriz University, Iran. He was awarded MSc degree (in electronic engineering) in 1980 and PhD degree (in digital signal processing) in 1982 from The University of Wales, UK. He was dean of Engineering Faculty, chairman of Industrial Affairs at Tabriz University (1983–1994) and director of the department of Talent students (1983–2008) at Tabriz University, Iran. His research interests include applied research studies in signal processing, interfacing techniques, and artificial intelligence (AI) applications in real-time industrial systems. Besides scientific activities, he is currently involved in designing industrial AI-based systems at Gostar Pazhouh Research Center (GPRCO).

E-mail: [email protected]

Jafar Sobhi

Jafar Sobhi was born in Tabriz, Iran. He received BS degree in electrical engineering from University of Tabriz, Tabriz, Iran. He received MSc and PhD degrees in electrical engineering from University of Urmia. His research interests are high-speed high-resolution data converter design, mixed signal circuits design, and RF-integrated circuits design. He is currently with Faculty of Electrical and Computer Engineering, University of Tabriz.

E-mail: [email protected]