Even order fully-differential biquadratic filter application of implementation of fully-differential OTA based on commercially available IC. - Chaiyan Chanapromma; Amnaj Prajong; Phamorn Silapan (ISPACS, 2011)

Multiple ouput CFTAs (MO-CFTAs)-based wide-range linearly/electronically controllable currentmode square-rooting circuit. - Phamorn Silapan; Chaiyan Chanapromma (ISPACS, 2011)

Electronically controlable gain and dynamic range positive/negative half-wave rectifier using FD and SE OTAs based on commercially available ICs. - Chaiyan Chanapromma; Thaweesak Worachak (ISCIT, 2012)

A 38.4 nW, 1.2 V, 250-Hz, 2nd-Order gm - C LPF With Degenerative SCP Transconductors Achieving 800-mVPP Input Range and 82.1- μVrms IRN for ECG Acquisition. - Surachoke Thanapitak; Prajuab Pawarangkoon; Wanlop Surakampontorn; Rafidah Ahmad; Ruhaifi Abdullah Zawawi; Asrulnizam Bin Abd Manaf; Suriya Adirek; Chaiyan Chanapromma (IEEE Trans. Circuits Syst. II Express Briefs, 2025)