DIELECTRIC RESONATORS MDR24 SERIES – Ultra High Q Temperature Stable Dielectric Resonators - TE Mode INTRODUCTION MDR24 Series is a specially formulated dielectric material that exhibits Ultra High Q at frequencies between 1.5 and 18 GHz with Qf > 300,000 at 10 GHz. Dielectric Constant is 24 with very tight tolerance. It is ideally suited for high frequency applications where extreme low loss and excellent temperature stability is required. MDR24 Series resonators are available in both disk and cylinder type with or with supports to minimize losses. We recommend alumina and forsterite supports to maintain high Qu factor. Material Characteristics Dielectric Constant ------------------------------------------------------------------------- 24 ± 1 (+/-0.5 Special) o Temperature Coefficient of Resonant Frequency ( τƒ) (ppm/ C) ---------------- 1 to 3 ± 1 Qf (1/tan δ x frequency in GHz) ---------------------------------------------------------- >300,000 @ 10 GHz Thermal Expansion (ppm/ oC) (20 oC) ---------------------------------------------------- >10 Thermal Conductivity (cal/cm-sec oC) @ 25 oC ---------------------------------------- ~ 0.006 Specific Heat (Cal/g oC) -------------------------------------------------------------------- 0.07 Density (g/cc) -------------------------------------------------------------------------------- 7.5 Composition --------------------------------------------------------------------------------- Tantalum Based Color ------------------------------------------------------------------------------------------- Yellow APPLICATIONS FEATURES • Dielectric Resonator Oscillator (DRO) • Very Tight Dielectric Constant Tolerance • Multi-pole Filters • Ultra-High Quality Factor (Q) • Satellite Communication Equipment • High Frequency and Temperature Stability • Direct Broadcast System (DBS) • Linear τƒ • Fixed and Auto-tuned Combiners • Consistent Lot-to-Lot Characteristics MCV MICROWAVE | 6349 NANCY RIDGE DRIVE, SAN DIEGO, CA 92121 | 858.450.0468 DIELECTRIC RESONATORS MDR24 SERIES – Ultra High Q Standard OD Sizes Standard OD sizes are available from .078” (2 mm) to 5.516” (140 mm) and are designed to meet applications requirements ranging from 130 MHz to 26 GHz. All resonators are available in both disc and cylinder types. Please consult the factory for your specific requirements. Alumina Support Material Characteristics Standard Alimina Support MCV Alumina Support e' 9.8 9.8 tan d 3.0 x 10 -4 1.0 x 10 -4 Density (g/cm 3) 3.75 3.9 Measuring Frequency (GHz.) 10 10 Specifications Dielectric Resonator – TE Mode MDR 24 03 S 108 40 50 MCV Dielectric Dielectric Temperature Temperature Outer Diameter Inner Diameter Height Resonator Constant Coefficient Coefficient Tolerance (x10 -1) (x10 -1) MDR 24 ± 1 02 = +3 ppm/ oC P = ± 0.5 ppm/ oC 108 = 10.8mm 40 = 4mm 50 = 5mm 24S ± 0.5 03 = +2 ppm/ oC S = ± 1.0 ppm/ oC 04 = +1 ppm/ oC N = ± 2.0 ppm/ oC MCV MICROWAVE | 6349 NANCY RIDGE DRIVE, SAN DIEGO, CA 92121 | 858.450.0468 .