Fast and Modular Analog Rank Order Filter Using CMOS Technology

TL;DR

This paper introduces a high-speed, high-precision analog rank order filter using CMOS technology, capable of outputting all ranks simultaneously and computing the rank of specific signals, verified through simulations.

Contribution

It presents a novel CMOS-based analog rank order filter design that outputs all ranks at once and includes a method to determine the rank of individual signals.

Findings

High-speed and high-precision performance demonstrated.

Outputs signals of all ranks simultaneously.

Simulation results verify the effectiveness of the design.

Abstract

In this paper, we apply the sorting network theory to construct an analog rank order filter. We present a voltage mode CMOS two-input sorting element and arrange these to form a rank order filter. The resulting circuit is simpleand is a high-speed, high-precision design. Although the transistor count is moderately higher than other designs, the proposed circuit simultaneously outputs signals of all ranks rather than of just one specified rank. We also develop a slightly modified design which calculates the rank of a given signal. We present reports of simulations to verify the performance of the device.