Principle and synthesis of bandpass filter

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Table of contents

Introduction
Chapter I. Filter Basics
I.1. Introduction
I.2. Principle and synthesis of bandpass filter
I.2.1. Signal filtering
I.2.2. Transfer function
I.2.3. J and K inverters
I.3. Planar Filter
I.3.1. Technologies
I.3.2. Topologies
I.4. Miniaturization techniques in planar technology
I.4.1. High dielectric constant substrate
I.4.2. Lumped element approach
I.4.3. Meandered transmission lines
I.4.4. Slow-wave transmission lines
I.5. Out-of-band rejection techniques
I.6. Conclusion
References
Chapter II. Compact Stub-Loaded Parallel-Coupled Bandpass Filter: Synthesis and Miniaturization Rules
II.1. Introduction
II.2. Parallel-Coupled Stub-Loaded Resonator bandpass filter structure
II.3. Theoretical study of the stub-loaded resonator
II.3.1. Topology of the SLR
Fundamental II.3.2. resonance frequency of the SLR
II.3.3. Miniaturization rules of the SLR
II.4. Synthesis method of the PC-SLR bandpass filter in a homogeneous technology
II.4.1. Design procedure
II.4.2. Validation of the theory
II.5. Synthesis method of bandpass filters in an inhomogeneous medium
II.5.1. Microstrip versus Stripline
II.5.2. Microstrip Filter design problems
II.6. Chapter conclusion
References
Chapter III. Parallel-Coupled Microstrip Bandpass Filters with Wide Spurious Response Suppression
III.1. Introduction
III.2. Resonance modes of the Stub-Loaded Resonator
III.2.1. Odd-mode resonance frequencies
III.2.2. Even-mode resonance frequencies
III.2.3. Optimization of the resonator topology for improving the out-ofband rejection
III.2.4. Intermediate conclusion
III.2.5. Convenient choice of the substrate
III.2.6. Third-order proof-of-concept filter
III.3. Design of feed lines with”U Corner”
III.3.1. Optimized U Corner for Transmission Zero Placement
III.3.2. Validation of the concept on Parallel-coupled Bandpass Filter
III.3.3. Validation of the concept on PC-SLR bandpass filter
III.4. State-of-the-art comparison
References
Chapter IV. Tunable Compact Filters Based on Stub-Loaded Resonators
IV.1. Introduction
IV.2. Theoretical study of capacitor loaded SLR
IV.2.1. Fundamental resonance frequency of the capacitor loaded SLR
IV.2.2. Resonance modes of the capacitor loaded SLR
IV.3. The varactor diode
IV.4. Experimental results
IV.4.1. Filter 1
IV.4.2. Stub reduction versus capacitance value
IV.4.3. Filter 2 simulation and measurement responses
IV.4.4. Conclusion
References
Conclusion
Publications