Title :
A 2.5nJ/bit multiband (MBAN & ISM) transmitter for IEEE 802.15.6 based on a hybrid polyphase-MUX/ILO based modulator
Author :
Rahman, Mosaddequr ; Elbadry, Mohammad ; Harjani, Ramesh
Author_Institution :
Univ. of Minnesota, Minneapolis, MN, USA
Abstract :
This paper describes a 802.15.6 compliant 2360-2484MHz multiband transmitter that digitally multiplexes the appropriate phases from an 800MHz poly-phase filter output to generate π/4 DQPSK signals at 2.4GHz. Modulation at 1/3rd the RF frequency reduces the transmitter power consumption and enables channel selection using a PLL running at 800MHz. The prototype transmitter consumes 2.4mW while delivering -10dBm RF power at the TX output resulting in an energy efficiency of 2.5nJ/bit at 1.2Mbps. The measured RMS EVM for π/4 DQPSK modulation is 3.21%.
Keywords :
UHF filters; body area networks; differential phase shift keying; modulators; multiplexing; phase locked loops; quadrature phase shift keying; DQPSK modulation; DQPSK signal; IEEE 802.15.6; ISM transmitter; MBAN transmitter; PLL; RMS EVM; bit rate 1.2 Mbit/s; channel selection; compliant multiband transmitter; digital multiplexing; energy efficiency; frequency 2360 MHz to 2484 MHz; frequency 800 MHz; hybrid polyphase-MUX-ILO based modulator; polyphase filter output; power 2.4 mW; transmitter power consumption; Frequency modulation; IEEE 802.15 Standards; Phase locked loops; Power harmonic filters; Radio frequency; Radio transmitters; π/4 DQPSK; 802.15.6; RF; WBAN; injection locking; low power; transmitter;
Conference_Titel :
Radio Frequency Integrated Circuits Symposium, 2014 IEEE
Conference_Location :
Tampa, FL
Print_ISBN :
978-1-4799-3862-9
DOI :
10.1109/RFIC.2014.6851646
