Analog Circuits | 12. Advanced Topics in Analog Circuits and Network Theory by Pavan | Learn Smarter
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12. Advanced Topics in Analog Circuits and Network Theory

This chapter explores advanced topics in analog circuits and network theory, covering modern design trends, nonlinear analysis methods, noise optimization, advanced filter synthesis, and emerging technologies pertinent to current applications like 5G. Key concepts such as the challenges in nanoscale CMOS, nonlinear network techniques, and MEMS technology are highlighted alongside their implications in real-world scenarios.

Sections

  • 12

    Advanced Topics In Analog Circuits And Network Theory

    This section explores advanced topics in analog circuits, including modern design trends, nonlinear analysis, noise considerations, filter synthesis, and emerging technologies.

  • 12.1

    Modern Analog Circuit Design Trends

    This section discusses the evolving trends in modern analog circuit design, focusing on challenges faced with nanoscale CMOS technologies and low-power techniques.

  • 12.1.1

    Nanoscale Cmos Challenges

    This section covers the critical challenges faced in nanoscale CMOS technology, focusing on effects like short-channel phenomena and the introduction of advanced transistor technologies.

  • 12.1.2

    Low-Power Techniques

    This section discusses low-power techniques in analog circuits, including subthreshold operation and energy harvesting interfaces.

  • 12.2

    Nonlinear Network Analysis

    This section covers Nonlinear Network Analysis focusing on Volterra Series and the Harmonic Balance Method, essential for analyzing nonlinear systems in RF amplifiers.

  • 12.2.1

    Volterra Series

    The Volterra Series provides a mathematical framework for analyzing nonlinear systems by representing their output as a series of integrals involving their input.

  • 12.2.2

    Harmonic Balance Method

    The Harmonic Balance Method is an analytical approach used to solve nonlinear circuit problems by balancing the frequencies of the components involved.

  • 12.3

    Noise In Analog Circuits

    This section discusses the fundamental noise sources in analog circuits, focusing on thermal, shot, and flicker noise, and introduces the concept of noise figure optimization for low-noise amplifiers.

  • 12.3.1

    Fundamental Noise Sources

    This section outlines the key sources of noise in analog circuits, detailing their power spectral density (PSD) and dependencies.

  • 12.3.2

    Noise Figure (Nf) Optimization

    This section discusses the concept of Noise Figure (NF) optimization, particularly in the context of a Cascode Low Noise Amplifier (LNA).

  • 12.4

    Advanced Filter Synthesis

    This section focuses on advanced synthesis techniques for filters in analog circuit design, specifically Gm-C filters and N-path filters.

  • 12.4.1

    Gm-C Filters

    Gm-C filters leverage transconductance amplifiers to achieve tunable filtering, suitable for a range of applications.

  • 12.4.2

    N-Path Filters

    N-Path filters utilize switched-capacitor techniques to achieve high-quality filtering at GHz frequencies.

  • 12.5

    Time-Varying Networks

    This section focuses on time-varying networks, highlighting the principles and applications of parametric amplifiers and mixer-first receivers.

  • 12.5.1

    Parametric Amplifiers

    This section covers the fundamental principles and applications of parametric amplifiers, focusing on their energy transfer characteristics.

  • 12.5.2

    Mixer-First Receivers

    Mixer-first receivers simplify the radio frequency to baseband conversion by integrating passive mixers, eliminating the need for low-noise amplifiers.

  • 12.6

    Network Theory Extensions

    This section introduces network theory extensions, focusing on non-reciprocal networks and distributed networks.

  • 12.6.1

    Non-Reciprocal Networks

    This section introduces non-reciprocal networks, focusing on the concepts of gyrators, isolators, and circulators essential for radar technology.

  • 12.6.2

    Distributed Networks

    This section deals with the transmission line models for distributed networks and their applications, including on-chip spiral inductors.

  • 12.7

    Emerging Technologies

    This section discusses innovative technologies in the field of analog circuits, focusing on MEMS/NEMS circuits and neuromorphic analog designs.

  • 12.7.1

    Mems/nems Circuits

    This section discusses the significance and functionality of MEMS and NEMS circuits, particularly focusing on RF MEMS switches.

  • 12.7.2

    Neuromorphic Analog

    Neuromorphic analog circuits utilize memristor crossbars to emulate synaptic weights, enabling more efficient computations.

  • 12.8

    Summary Table

    This section provides a concise summary table of key topics, formulas, and applications related to advanced analog circuit design.

References

ee4-ac-12.pdf

Class Notes

Memorization

What we have learnt

  • Modern analog circuit desig...
  • Nonlinear analysis methods ...
  • Noise optimization in analo...

Final Test

Revision Tests