Novel Transmitter Design for Biomedical Applications

IME researchers have designed a compact and power-efficient transmitter with high data rate. By employing a novel quadrature phase-shift keying (QPSK) architecture based on injection locking technique, many components can be eliminated such that the transmitter occupies an active core area of only 0.28 mm2. The transmitter has successfully demonstrated high data rate (50Mb/s), improved phase noise performance and good error vector magnitude while consuming <5.6 mW. The technology is implemented with 0.18 µm CMOS process. The new transmitter design is suitable for biomedical applications that demand high data rate, small form factor and low power consumption.


Shengxi Diao et. al., “A 50-Mb/s CMOS QPSK/O-QPSK Transmitter Employing Injection Locking for Direct Modulation," IEEE Transactions on Microwave Theory and Techniques, Vol. 60, Pg. 120 - 130, 2012