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—An energy detector designed in a 0.18μm CMOS technology and intended for a non-coherent impulse-radio UWB receiver is presented in this paper. The proposed circuit exploits the quadratic current characteristic of saturated MOS transistors to square input pulses that cover the whole UWB bandwidth. The integral is computed with a Gm-C architecture connected(More)
—In this paper, we analyze the impact of process variations on the clock skew of VLSI circuits designed in deep sub-micrometer technologies. With smaller feature size, the utilization of a dense buffering scheme has been proposed in order to realize efficient and noise-immune clock distribution networks. However, the local variance of MOSFET electrical(More)
In this work we present a full analog turbo decoder for hard-disk EPR-IV read channels in CMOS technology. The design is based on a current-mode approach developed by Loeliger et al. [1], for the analog implementation of sum-product algorithms. The circuits main attractions are the coding gain offered by turbo codes over the uncoded EPR-IV channel, and the(More)