Review of Skills that may be required on any exam throughout the semester:
Transmission Line parameters
· Physical effect of each parameter
· Derivation from Table 2.1
· Derivation from E and H fields
Transmission Line Fields
· One-way voltages, currents, impedance: Vo+, Vo-, Zo, Io+, Io-
· Total voltage, current, impedance: V(z), VL, Vg, Vin , I(z), etc., Z(z), ZL, Zin
Transmission Line Equations
· Telegrapher’s Equations
· Wave Equations (for V or I)
· Numerical Solution of TL equations.
Smith Chart
· Impedance and Admittance
· SWR, Location of Voltage minima and maxima
· Reflection Coefficient
· Distance = rotation (Toward load or toward generator)
· Attenuation from lossy lines
Transients on Transmission Lines
· Reflection diagram
· Step function, pulse, or CW voltage input
· Currents or voltages as a function of space (given time) or function of time (given location)
Standing Waves
· How standing waves are produced from Vo+ and Vo-
· WHAT are standing waves? Understand V as a function of time (given location) or function of space (given a time)
· Standing wave measurements using slotted line (different loads and frequencies), voltage minima and maxima, SWR.
New material:
Microstriplines
· Design for a given impedance
· Field patterns
· Lossy lines
S-parameters
· Derivation of Z, Y, ABCD, S matrices for given networks
- Direct methods
- Tables and Conversions
- Measurements
· Physical meanings of parameters
Matching Networks
· Single Stub Matching
· Double Stub Matching
· Quarter Wave Transformers (real and complex loads)
· Binomial and Chebyshev Transformers
· Lumped Element Networks (L, Pi, T) (real and complex loads)
Just a note:
When given a transmission line question, you may solve it either with calculation of equations or with Smith Chart. Smith Charts (like those in class) will be provided. You may bring any other type of Smith Chart you like (colored, more detailed, preprinted, etc.). Exam is open portfolio, open notes.