Define the quality factor. On what factors does the cut-off frequency of a rectangular waveguide depend? Derive expressions in support of your answer.
The quality factor (Q) of any resonant or anti resonant circuit is a measure of frequency selectivity and it defined by the equation
\(Q=\frac{\omega_0W}{P}\)
Where W=maximum energy stored
P=average power loss (dissipated power)
ω0=resonant frequency
\(Q=2\pi\frac{Maximum\ energy\ stored\ per\ cycle}{Energy\ dissipated\ for\ cycle}\)
Define microwave. What is the significance of using ‘S’ parameter in microwave engineering.
What are cross field device? What role does the dc magnetic field play in their normal operation?
What is IMPATT diode? How does the negative resistance arise in this diode?
What is angle modulation?
What are the difference between TED’s and junction device?
