Standing Up For Standing Waves

RF Communications. Past, Present, and Future Overview of Demonstration Equipment Ideal Transmission Line Conditions Standing Wave Ratio (SWR) Characteristics of Transmission Lines with Standing Waves Simple Resonate Dipole Antenna Characteristics Directional Antenna Characteristics Transmission Line Stubs Increasing Antenna Gain Non-Resonate Dipole Antenna Conjugate Match Theorem Phase Velocity Ferrite Beads Series-Section Transmission Line Transformers Demonstration Review

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1. RF Communications. Past, Present, and Future:
   1. Milestones in RF Communications
   2. One Hundred Years ago efficient Transmission Lines and Antennas equaled increased range
      (Standing Up For Standing Waves Rule #1)
   3. Rule #1 still applies in the 21st Century
    
2. Overview of Demonstration Equipment:
   1. RF Source
   2. Frequency
   3. 4 to 1 Coaxial Balun
   4. Transmission Line
   5. Sensors
    Back to Syllabus Index
3. Ideal Transmission Line Conditions:
   1. Terminating Impedance Equals Transmission Line Impedance
   2. Transmission Line RF Power Distribution
   3. Transmission Line RF Voltage Distribution
   4. Transmission Line RF Current Distribution
    
4. Standing Wave Ratio (SWR):
   1. Technically known as Voltage Standing Wave Ratio or VSWR
   2. Defined as a Wave that appears to be "Frozen in Time" or "Standing" on a Transmission Line
   3. Caused by Collision of "Forward" and "Reflected" Energy Waves
   4. Why does anybody care?
    Back to Syllabus Index
5. Characteristics of Transmission Lines with Standing Waves:
   1. RF Voltage Distribution along a Transmission Line with Standing Waves
   2. RF Current Distribution along a Transmission Line with Standing Waves
   3. Forward and Reflected RF Power Distribution along a Transmission Line with Standing Waves
   4. Measuring Standing Waves using RF Voltage
   5. Measuring Standing Waves using RF Current
   6. Measuring Standing Waves using RF Power
   7. Visulization of a Standing Wave
    
6. Simple Resonate Dipole Antenna Characteristics:
   1. "E" or Voltage Field Pattern
   2. "H" or Current Field Pattern
   3. Voltage and Current distribution along a Dipole Antenna
    Back to Syllabus Index
7. Directional Antenna Characteristics:
   1. Directional Characteristics of a 3 Element Yagi Antenna
   2. Effects of Cross-Polarization
    
8. Transmission Line Stubs:
   1. Open Ended and Shorted 1/4 Wave Transmission Line Stubs
   2. Open Ended and Shorted 1/2 Wave Transmission Line Stubs
    Back to Syllabus Index
9. Increasing Antenna Gain:
   1. Addition of a "Reflector" Element to a Dipole Antenna
   2. Addition of a "Director" Element to a Dipole Antenna
    
10. Non-Resonate Dipole Antenna:
    1. Efficiency of "Reduced Length" or "Non-Resonate" Antennas
    2. Improving "Non-Resonate" Antenna Efficiency
     Back to Syllabus Index
11. Conjugate Match Theorem:
    1. Lumped Constant Line Matching using Capacitors
    2. Lumped Constant Line Matching using Inductors
    3. Distributed Constant Line Matching Using Open Ended Transmission Line Stub
    4. Distributed Constant Line Matching Using Shorted Transmission Line Stub
     
12. Phase Velocity:
    1. Measuring the Phase Velocity of a Transmission Line
    2. Loss of Phase Velocity in different Dielectric Materials
     Back to Syllabus Index
13. Ferrite Beads:
    1. Single Mode Attenuation
    2. Common Mode Attenuation
    3. Outer Coaxial Shield Attenuation
     
14. Series-Section Transmission Line Transformers:
    1. 1/2 Wave "Impedance Transparent" Transmission Line Sections
    2. 1/4 Wave "Impedance Inverting" Transmission Line Sections
     Back to Syllabus Index
15. Demonstration Review:
    1. Open Group Questions
    2. Revisit or variations of the above objectives

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