Microwave microstrip resonators tuning without quality factor deterioration
Journal Title: Вісник НТУУ КПІ. Серія Радіотехніка, Радіоапаратобудування - Year 2014, Vol 0, Issue 56
Abstract
Stub and ring resonators with resonance frequency micromechanical tuning are presented. Benefits and main differences of micromechanical resonance frequency tuning method from other methods are shown. Normalized dependences of effective permittivity on normalized air gap values for various microstrip line electrode width to substrate height ratios are obtained. Effective permittivity analytical formulas for the case of infinitely wide electrodes are derived. Calculated and experimental dependences of resonance frequency on air gap value and stub experimental unloaded quality factor dependences are given. Air gap influence on resonance frequency value depending on substrate permittivity is shown in terms of the resonance frequency sensitivity. Error estimation for measured experimental data is presented. Adding tunable heterogeneity between the microstrip resonator signal electrode and the substrate provides not only the resonance frequency tuning but preserves unloaded quality factor. The preservation of the unloaded quality factor during the resonance frequency tuning achieved due to the metal and dielectric loss reduction. Air gap doesn’t have dissipative losses and has permittivity of one, which makes it the best solution for unloaded quality factor preservation. Another important conclusion is that insertion of the air heterogeneity reduces values of dielectric and metal losses arising when substrates with high permittivity are used. For dielectric loss reduction, it is important to maintain low ratio of microstrip line width to substrate height. In contrast to dielectric losses for metal loss reduction the ratio of microstrip line width to substrate height should be high. However, that ratio is limited by impedance permissible range.
Authors and Affiliations
P. Serhienko, Yu. Prokopenko
Keywords
Related Articles
- EP ID EP308866
- DOI 10.20535/RADAP.2014.56.75-87
- Views 52
- Downloads 0
Comparison of strategies of preventive and corrective maintenance of uninterruptible power supply
Introduction. The comparison of the reliability of two variants of the fault-tolerant N+M redundant configurations for uninterruptible power supply with corrective and preventive maintenance is given in this paper. Formu...
Experimental research of digital photoplethysmography sensor’s performances
Design of. the new, high-sensitivity optica! sensor, on the basis of the light-emitting diodes is presented, one with which carries out function of a light source, and another back displaced functions as the detector. Av...
Segmentation of anatomical heart structures in Ensite Verismo software for radiofrequency ablation of arrhythmogenic tissues
Review of the problem. The relevance of the research is the need of a high-quality imaging of the left atrium anatomy for the effectiveness of radiofraquency ablation of arrhythmogenic tissue of the myocardium in real ti...
Method for enhancing the reliability of information telecommunication clouds through the introduction of homogeneity
The approach to the information cloud design through the introduction of homogeneity is presented in the article. The method that is excluding single points of failure is considered in the article. The usage examples and...
Essentialities of the contemporary higher technical education paradigm are exposed.
Her distinctive characteristics are analysis. Inherent this paradigm the object contradiction are discussed