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http://dx.doi.org/10.5573/ieek.2013.50.6.138

Design of Efficient Trapezoidal Filter and Peak Value Detection Circuit for XRF Systems  

Piao, Zheyan (Department of Electronic Engineering, Chonbuk National University)
Chung, Jin-Gyun (Department of Electronic Engineering, Chonbuk National University)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.50, no.6, 2013 , pp. 138-144 More about this Journal
Abstract
In XRF systems, various techniques have been developed for the synthesis of pulse shapes using digital methods instead of traditional analog methods. Trapezoidal pulse shaping algorithms can be used for digital multi-channel pulse height analysis in X-ray spectrometer systems. In this paper, an efficient trapezoidal filter architecture is presented. In addition, we present a hardware-efficient peak value detection algorithm. By the proposed algorithm, peak value detection error is decreased by half compared with the conventional algorithm. The proposed Digital Pulse Processing(DPP) algorithm is designed using Verilog HDL and implemented using an FPGA on a test board. It is demonstrated that the implemented DPP board works successfully in practical XRF systems.
Keywords
XRF System; trapezoidal filter; peak value detection; digital pulse processing;
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