E-band Impulse Radio Transceiver with 2-bit Pulse-Position Modulation

This paper presents a novel impulse radio transceiver based on a 2-bit pulse-position modulation (PPM) system for E-band wireless communication systems. We propose a time-based modulation architecture for a wireless transceiver. This is a promising architecture for deep-submicron and nanoscale CMOS technology. The performance of the wireless transceiver can be enhanced as the speed of the CMOS circuit increases. The transmitter is composed of four circuit blocks: a pulse-position modulator, impulse generator, millimeter-wave bandpass filter, and power amplifier. The receiver is comprised of a conventional quadrature demodulator. The transmitter and receiver chipset is fabricated in 55-nm standard CMOS technology. In transceiver loop-back tests, a data rate of 7.0 Gb/s with repetition data and 4.6 Gb/s with pseudo-random bit sequence (PRBS) data are demonstrated.