Dampening Cavity Resonance Using Absorber Material
By implementing microwave absorbent material, unwanted cavity resonances are effectively dampened to prevent microwave radiation in circuits where PC-board is used as a cover. Today, many microwave circuit designers are noticing that their circuits do not perform as well as predicted when they enclose them with circuit board covers. As a result, cavity resonances are set up inside the cavity, which changes the impedance conditions required for proper operation of some circuit elements. With operational frequencies increasing, this is becoming a prevalent issue in microwave circuit design.