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Table of contents
1. Introduction
1.1 Background
1.2 Goal
1.3 Outline
2. Theory
2.1 Important Design Parameters
2.1.1 Frequency of operation and bandwidth
2.1.2 Insertion loss
2.1.3 Isolation
2.1.4 Return loss and VSWR
2.1.5 Reflective or absorptive
2.1.6 Distortion
2.1.7 Number of throws
2.2 Microwave circulator
2.2.1 Working principle
2.2.2 Microwave circulator Design principle
2.3 Microwave/RF Switch
2.3.1 PIN Diode Switch
2.3.2 Field-Effect Transistor Switch
3. Simulations and Results
3.1 Simulations for Microwave Circulator
3.1.1 Experimental Design of Microwave circulator
3.2 Simulations for PIN diode Switch
3.2.1 Series PIN SPDT Switch
3.2.2 Shunt PIN SPDT Switch
3.2.3 Series-shunt PIN SPDT Switch
3.2.4 Very High Isolation Switch
3.3 Simulations for FET Switch
4. Measurements
5. Discussion and Conclusion
6. References
7. Appendix
7.1 Types of transmission lines
7.1.1 Strip line
7.1.2 Micro-strip line
7.1.3 Single ended line and differential line signalling systems
7.1.4 Single ended line signalling system
7.1.5 Differential line signalling system
7.1.6 The circulation approximation
7.1.7 The 3D- view of the circulator & its Electric field distribution
