The development of millimeter-wave integrated circuits continues to stimulate research on dielectric resonators in the millimeter wave frequency band. At millimeter wavelength devices the cylindrical dielectric resonators used on their conventional TE,TM, or hybrid modes are practically small. When used in their whispering gallery modes (WGM's) these cylindrical ring DR's have dimensions larger than normal for millimeter wavelength. One of the most important advantages of the WGM of DR's is its analogy with a traveling wave ring resonator. In this paper we define both amplitude-frequency and phase-frequency characteristics of band pass ring resonator filter.
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