L-band dielectric resonator filters and oscillators with low vibration sensitivity and ultra low noise

The evolution of the dielectric resonator filter (DRF) design is discussed and the incorporation of this design into a low-noise dielectric resonator oscillator (DRO) is described. The results of each intermediate step are included along with the final results. The unique properties of the DRF allow it to have a loaded Q of >6500 at 1.538 GHz with an insertion loss of approximately 6 dB while maintaining a vibration sensitivity 2.2*10/sup -8/ (G/sup -1/). The use of high-pressure bonding and the elimination of the metallization at the cavity and substrate interface allows this configuration to work.<>