Title :
A 2.4-GHz low power polar transmitter for wireless body area network applications
Author :
Kopta, V. ; Pengg, Franz ; Le Roux, E. ; Enz, Christian
Author_Institution :
Centre Suisse d´Electron. et de Microtech., Neuchatel, Switzerland
Abstract :
A 2.4-GHz low power polar transmitter architecture is proposed in this paper. A dynamic biasing circuit, controlled by a digital envelope signal, is used to linearize the input-output characteristic of the overdriven class-C power amplifier. A model of the transmitter is presented and used for initial assessment of the achievable performance in terms of efficiency and linearity. The transmitter is designed in a 65 nm CMOS technology. The transistor-level simulations indicate that the transmitter successfully meets the requirements of the IEEE 802.15.6 standard for wireless body area networks. The simulated amplifier consumes 5 rnA from a 1.2 V supply while delivering 1.8 dBm of output power with a peak efficiency of 26.5 %.
Keywords :
CMOS analogue integrated circuits; UHF integrated circuits; UHF power amplifiers; body area networks; circuit simulation; linearisation techniques; low-power electronics; radio transmitters; CMOS technology; IEEE 802.15.6 standard; class-C power amplifier; current 5 mA; digital envelope signal; dynamic biasing circuit; frequency 2.4 GHz; low power polar transmitter architecture; size 65 nm; transistor-level simulation; voltage 1.2 V; wireless body area network application; CMOS integrated circuits; Integrated circuit modeling; Mathematical model; Power generation; Transistors; Transmitters; WBAN; dynamic biasing; low power; polar amplifier;
Conference_Titel :
New Circuits and Systems Conference (NEWCAS), 2013 IEEE 11th International
Conference_Location :
Paris
Print_ISBN :
978-1-4799-0618-5
DOI :
10.1109/NEWCAS.2013.6573587
