Open Access

An Analog Correlator for Ultra-Wideband Receivers

EURASIP Journal on Advances in Signal Processing20052005:546896

Received: 29 September 2003

Published: 17 March 2005


We present a new analog circuit exhibiting high bandwidth and low distortion, specially designed for signal correlation in an ultra-wideband receiver front end. The ultra-wideband short impulse signals are correlated with a local pulse template by the correlator. A comparator then samples the output for signal detection. A typical Gilbert mixer core is adopted for multiplication of broadband signals up to . As a result of synchronization of the received signal and the local template, the output voltage level after integration and sampling can reach up to , which is sufficient for detection by the comparator. The circuit dissipates about from double voltage supplies of and using SiGe BiCMOS technology. Simulation results are presented to show the feasibility of this circuit design for use in ultra-wideband receivers.

Keywords and phrases

analog correlatorGilbert cellultra-wideband receiver

Authors’ Affiliations

Institute of Microelectronics of Tsinghua University, Beijing, China


© Tu et al. 2005