Impulse based UWB Transmitter in 0.18 μm CMOS for Wireless Interconnect in Future ULSI

1. Introduction To meet the challenge of 3D-intergration in future ULSI, global wireless interconnection (interconnect distance above 300 µm) which utilizes electromagnetic wave transmission by using integrated antenna and ultra wideband (UWB) transceiver system has been proposed [1, 2] as shown in Fig. 1. Among the different techniques for UWB system, impulse radio based UWB uses very short Gaussian monocycle pulses (GMP) as transmitted signal. Since the GMP transmission does not require any carrier, the transceiver circuit will be simple and occupies small area as it does not require complex frequency recovery system. In this paper an impulse based UWB transmitter for wireless interconnect in future ULSI is presented. The transmitter output is on-off keying (OOK) modulated differential Gaussian monocycle pulse. The developed transmitter is implemented in 0.18µm CMOS. It occupies small area and consumes low power.