Novel temperature-stable ceramics for microwave dielectric resonators and microstrip substrates
- 17 September 1970
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 6 (19) , 614-615
- https://doi.org/10.1049/el:19700428
Abstract
Ceramics comprising homogeneous single-phase zirconate solid solutions of suitable composition have very low temperature coefficients of permittivity, low-frequency permittivities of 30–40 and low losses. Dielectric resonators give Q values up to 4000 and permittivities of 28–35 at 4–5 GHz. The effective permittivity measured on a microstrip ring resonator on a calcium-zirconate substrate shows the dispersion predicted theoretically; the effective permittivity increases from 17 to 23 over the frequency range 1–12 GHz and gives 28.1 as the calculated real value of the permittivity of the substrate. The measured Q value of 200 indicates negligible dielectric losses compared with the I2R losses.Keywords
This publication has 1 reference indexed in Scilit:
- The Evaluation of Alumina Substrates for use in Microstrip Microwave Integrated CircuitsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1969