1. UKM Learning and Research Repository
2. PHD Thesis / Tesis PHD
3. Institute of Microengineering and Nanoelectronics / Institut Kejuruteraan Mikro dan Nanoelektronik (IMEN)

Title:	Design of low voltage low power active building blocks and analog signal processing modules for analog signal processing
Authors:	Mohammad Faseehuddin (P83811)
Supervisor:	Jahariah Sampe, Dr.
Keywords:	Signal processing Analog-to-digital converters Electromotive force Universiti Kebangsaan Malaysia -- Dissertations Dissertations, Academic -- Malaysia
Issue Date:	5-Jul-2019
Description:	The analog signal processing holds certain inherent advantages over the digital signal processing (DSP) in terms of power dissipation, speed and chip area requirement. The advantage stems from the fact that all the naturally occurring signals are analog in nature. The emergence of powerful battery operated devices and the continuous scaling of the CMOS technology have made low voltage low power (LVLP) operation mandatory. This makes the research and design of complex analog signal processing (ASP) systems an important area of research. In the recent past, it has been found that the current mode analog circuits are superior to the voltage mode circuits, especially in low voltage environment. The development of current mode analog building blocks (ABBs) is of paramount importance to cater to the present day need of high performance ASP systems. A number of ABBs exists but there is a need to develop new universal and versatile high performance ABBs. The interesting current voltage (V-I) characteristics of the newly defined ABBs can be exploited in designing exemplary analog signal processing modules (ASPMs). Frequency filters, immittance simulators and oscillators are specialized analog signal processing modules. They form the basic building blocks of any ASP system and analog to digital interfacing circuits, so their development remains an ever evolving field. In addition, they are used in communication systems, audio processing, biomedical signal processing etc. This research work focuses on first, the development of three novel ABBs; the dual X differential input transconductance amplifier (DXCCDITA), extra X current conveyor transconductance amplifier (EXCCTA) and voltage differencing differential voltage current conveyor (VD-DVCC). Second, design of ultra low voltage current conveyor (CCII) employing innovative device level and circuit level techniques. Third, the development of novel ASPMs utilizing the above proposed ABBs and other popular ABBs. The ASPMs designed in this research include universal filters, mix-mode universal filters, first order all pass filters, grounded and floating immittance simulators and oscillators. The designs are developed through rigorous mathematical analysis and validated using comprehensive Spice simulations using 0.18μm and 0.35 μm technology parameters. In select cases, the complete layout of the ABBs and ASPMs are designed using Cadence Virtuoso design suit and post layout simulations are discussed. In addition, hardware implementation of the ASPMs using the commercially available integrated circuits (AD844 and LM13700) is done and the results are provided. The developed ABBs work at low supply voltages in the range of ±0.4V to ±1.5V and designed ASPMs are successfully tested in 318kHz to 8.5MHz range.,Ph.D.
Pages:	300
Call Number:	TK5102.9.M834 2019 3 tesis
Publisher:	UKM, Bangi
Appears in Collections:	Institute of Microengineering and Nanoelectronics / Institut Kejuruteraan Mikro dan Nanoelektronik (IMEN)

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