Dual Mode SIMO Biquad Filter Using VDTA

作者：Shivani Singh, Garima Garima, Bhavnesh Jaint · 年份：2024 · DOI：10.1109/iceccc61767.2024.10593918 · 被引用次数：3 · 研究领域：Advanced Adaptive Filtering Techniques、Advanced Wireless Communication Techniques、ECG Monitoring and Analysis

This paper introduces a biquadratic filter configuration that operates in dual mode with a single input and multiple outputs (SIMO) providing two voltage mode functions (low-pass and band-pass), three transadmittance mode functions (low-pass, high-pass and band-pass) and three current mode functions (low-pass, high-pass and band-pass) based on VDTA. The proposed configuration, utilizing two Voltage Differencing Transconductance Amplifiers (VDTAs) and two grounded capacitors, is designed without the need for external resistors. This makes it well-suited for potential integration into a single integrated circuit (IC). It provides adaptability through the option to configure into voltage mode, current mode, or transadmittance mode structures, based on the selected input excitation. The proposed structure allows independent tuning of the angular frequency ($w_{o}$) without affecting the bandwidth. The feasibility of the suggested biquadratic configuration is illustrated through PSPICE simulations employing the 0.18µm TSMC CMOS process specifications.