Q factor (for unloaded cavity resonator)
The Q factor of the cavity resonator is the ratio between the stored energy of the cavity to the power loses in the cavity.
Where V stands for volume of the cavity, A stands for Area of the cavity and S stands for skin depth of the cavity
Factors effecting Q of the Cavity
There are the following factors which affect the Q of unloaded cavity
- If the size of the cavity is made bigger then energy stored will be more and its Q will increase.
- The Q of the cavity is directly proportional to the frequency of the cavity resonator. If the cavity resonator is operating at high frequency its Q will be more.
- The shape of the cavity also varies its Q if cavity is in disorder shape. Its Q will be less and vice versa.
- The thickness of the cavity resonator will also vary its Q. if the walls of the resonator are thicker. It will observe more energy and its Q will decrease.
- The area of the cavity resonator will affect the Q factor. If the area is more, the more energy will observed by the conducting walls and Q will decrease.
- The type of conducting material of the cavity also varies the Q factor of the cavity.
- The internal polishing and smoothness of this polish inside the cavity also varies its Q.