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CMOS Transistors Based First-Order Voltage-Mode All-Pass Filter with Tunable Transformation Possibility

Department of Electronics and Communication Engineering, Jaypee Institute of Information Technology, Noida, Uttar Pradesh 201309, India

E-mail Address: shivgnit@gmail.com

Corresponding author.

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Bhartendu Chaturvedi

Department of Electronics and Communication Engineering, Jaypee Institute of Information Technology, Noida, Uttar Pradesh 201309, India

E-mail Address: bhartendu.prof@gmail.com

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Jitendra Mohan

Department of Electronics and Communication Engineering, Jaypee Institute of Information Technology, Noida, Uttar Pradesh 201309, India

E-mail Address: jitendramv2000@rediffmail.com

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https://doi.org/10.1142/S0218126622502942Cited by:1 (Source: Crossref)

Abstract

In this paper, a novel complementary metal-oxide semiconductor (CMOS) transistors based first-order voltage-mode all-pass filter is proposed. The filter circuit employs six metal-oxide semiconductor (MOS) transistors and minimal number of passive components, i.e., a resistor and a capacitor. The core of the proposed filter is a CMOS inverting amplifier with unity gain. The proposed circuit exhibits some attractive features such as compact design, high input impedance and ability to provide non-inverting and inverting all-pass responses simultaneously. Additionally, it does not require any kind of passive element matching constraints. Furthermore, by replacing the passive resistor with an active negative channel metal-oxide semiconductor (NMOS) transistor, the proposed filter is enriched with the much-desired feature of tunability. The theoretical behavior is tested and demonstrated by carrying SPICE simulations using TSMC 0.18 $μ$ $μ$ m level-7 CMOS process parameters.

This paper was recommended by Regional Editor Giuseppe Ferri.

Keywords:

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