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ECE 563 Microwave Engineering. Microwave Cylindrical Resonators. Cylindrical Resonator. Fields of TE nm and TM nm bouncing back and forth between end plates. Again d= l  (rather than arbitrary values in waveguide) n=variations of the field components in the  direction

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ECE 563 Microwave Engineering


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ece 563 microwave engineering

ECE 563 Microwave Engineering

Microwave Cylindrical Resonators

cylindrical resonator
Cylindrical Resonator
  • Fields of TEnm and TMnmbouncing back and forth between end plates.
  • Again d=l (rather than arbitrary values in waveguide)
  • n=variations of the field components in the  direction
  • m=zeroes of the field in radial direction
cavity coupling
Cavity Coupling
  • Conducting probe in E field
  • conducting loop with its plane normal to B field
  • hole of iris between cavity and waveguide
cavity coupling1
Cavity Coupling
  • Hole or iris between cavity and waveguide
  • Introduction of pulsating electron beam through a gap in a resonator, in direction of E field
cavity perturbations
Cavity Perturbations
  • At resonance, We=Wm
  • Perturbation causes one type of energy to change more than the other, then f0 shifts to restore We=Wm
  • If small volume of a cavity is taken out of the region of max E (where H is negligible)
example cavity perturbation
Example: Cavity Perturbation

Circular cylindrical cavity