Coaxial resonator, wanda kuma ake kira dielectric resonator, wani sabon nau'in resonator da aka yi da ƙananan asara, babban dielectric akai-akai irin su barium titanate da titanium dioxide. Yawanci yana da rectangular, cylindrical, ko madauwari.Ana amfani da shi a Band Pass Filter (BPF), Voltage Controlled Oscillator (VCO). Ana amfani da fasahar busasshiyar hatimi mai inganci da fasaha mai inganci don cimma daidaiton mitar.