Unloaded quality factor measurement for MIC dielectric resonator applications

Characterization of MgTiO3–CaTiO3‐Layered Microwave Dielectric Resonators with TE01δ Mode

“…This is because the effects of CaTiO 3 on the temperature coefficient of resonant frequency are dependent on the stacking schemes. Although the predicted microwave dielectric properties of the temperature‐stable‐layered resonators are not better than those of the (Mg,Ca)TiO 3 ‐based resonators (ɛ r =20–22, Q × f =56 000–92 000 GHz and τ f ≈0 ppm/°C 21–26 ), they are expected to be much improved through optimizing the preparing conditions to improve the corresponding properties, especially the Q × f values of MgTiO 3 and CaTiO 3 .…”

“…Although the prediction is not very accurate, the predicted trends are consistent with the experimental results. The errors may be attributed to many uncertainties of the Q × f measurement, such as difference between the samples, 12 limited accuracy of the network analyzer, 22 imperfect data fitting to an ideal circle, 22 effect of the coupling coefficient 23 and so on. For each stacking scheme, a sharp rise of Q × f value is observed when the thickness fraction of CaTiO 3 decreases to a certain value (see Fig.…”

Automatic technique for the characterisation of a dielectric resonator coupled to a microstrip line

“…The proper and efficient use of dielectric resonators requires adequate procedures for their characterisation in the actual system. Recently, there has been a lot of interest in the subject [4][5][6][7][8]. Podcameni et al [4] and Kahnna and Garault [5] have proposed two adequate techniques for the problem.…”

“…Recently, there has been a lot of interest in the subject [4][5][6][7][8]. Podcameni et al [4] and Kahnna and Garault [5] have proposed two adequate techniques for the problem. Podcameni presents a direct, although not too accurate, procedure to determine the unloaded Qfactor in terms of a specific relative bandwidth.…”

Bromwich Method for Solving Maxwell’s Equations Applied to Cylindrical Resonators

“…Although the dielectric resonator [1] is well accepted, when miniaturization is a paramount, the metallic-wall hollow cylindrical cavity resonator is able to reach a higher quality factor [6].…”