The concept of CMOS OOK transmitter using low voltage self-oscillating active inductor

This paper presents a low voltage, On-Off Keying (OOK) CMOS integrated transmitter for ISM 434 MHz biomedical applications using a concept of a novel self-oscillating (degenerated) active inductor. A thorough theoretical analysis of the oscillator is presented, together with simulated results using UMC 90 nm 1P9M RF process libraries. The proposed oscillator achieves an average phase noise of −93 dBc/Hz at 1 MHz offset from 434 MHz carrier frequency, with a relative tuning range of 26% to compensate for process variations. The transmitter allows modulation speeds up to 100 Mbps with RF output power of −4 dBm to 50 Ω load from 1 V power supply.

[1]  Ronan Farrell,et al.  Noise and dynamic range of CMOS degenerated active inductor resonators , 2009, 2009 European Conference on Circuit Theory and Design.

[2]  Floyd M. Gardner,et al.  Phaselock techniques , 1984, IEEE Transactions on Systems, Man, and Cybernetics.

[3]  Asad A. Abidi,et al.  CMOS active filter design at very high frequencies , 1990 .

[4]  Feng Zhao,et al.  A CMOS 434/868 MHz FSK/OOK transmitter with integrated fractional-N PLL , 2008, APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems.

[5]  Miguel Chanca,et al.  A multimode 0.3-200-kb/s transceiver for the 433/868/915-MHz bands in 0.25-μm CMOS , 2004 .

[6]  Sangwook Nam,et al.  Low Power OOK Transmitter for Wireless Capsule Endoscope , 2007, 2007 IEEE/MTT-S International Microwave Symposium.

[7]  Behzad Razavi,et al.  RF Microelectronics , 1997 .

[8]  M. Chanca,et al.  A multimode 0.3-200-kb/s transceiver for the 433/868/915-MHz bands in 0.25-/spl mu/m CMOS , 2004, IEEE Journal of Solid-State Circuits.

[9]  Michiel Steyaert,et al.  Low-noise voltage-controlled oscillators using enhanced LC-tanks , 1995 .

[10]  T.H. Lee,et al.  Oscillator phase noise: a tutorial , 1999, IEEE Journal of Solid-State Circuits.

[11]  K. W. Moulding,et al.  A Fully Integrated 5 Gyrator Filter at Video Frequencies , 1977, ESSCIRC '77: 3rd European Solid State Circuits Conference.