Ba2Ti9O20 as a Microwave Dielectric Resonator
- 1 September 1975
- journal article
- Published by Wiley in Journal of the American Ceramic Society
- Vol. 58 (9-10) , 418-420
- https://doi.org/10.1111/j.1151-2916.1975.tb19013.x
Abstract
Microwave measurements of Ba2Ti9O20 show that this ceramic is uniquely suited for dielectric resonators. (Suitable ceramics should have a high dielectric constant K, a low dielectric loss (high Q), and a low temperature coefficient of resonant frequency, τ.) At 4 GHz, Ba2Ti9O20 resonators have Q >8000, K= 39.8, and τ=2 ppm/°C. Measurements of Q and τ were made on unmetallized ceramic resonator disks positioned in a waveguide; K was measured using a dielectric post resonator technique. From 4 to 10 GHz, Q approaches that for a copper waveguide cavity, whereas the temperature coefficient is typically 8 times lower.This publication has 5 references indexed in Scilit:
- A New BaO‐TiO2 Compound with Temperature‐Stable High Permittivity and Low Microwave LossJournal of the American Ceramic Society, 1974
- High‐Permittivity Temperature‐Stable Ceramic Dielectrics with Low Microwave LossJournal of the American Ceramic Society, 1973
- A new low-loss high-k temperature-compensated dielectric for microwave applicationsProceedings of the IEEE, 1971
- Microwave Measurement of High-Dielectric- Constant MaterialsIEEE Transactions on Microwave Theory and Techniques, 1966
- A Dielectric Resonator Method of Measuring Inductive Capacities in the Millimeter RangeIEEE Transactions on Microwave Theory and Techniques, 1960