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The results of phase noise measurement for high-overtone bulk-acoustic resonators (HBARs) for use in high-performance oscillators, operating at 640 MHz with insertion losses of 10-15 dB and unmatched Qs greater than 110 K are reported. Noise measurements made on these resonators with input drive levels of 16 dBm have shown self-noise levels of S(y)(f=100 Hz)=8.0x10(-26) for 1/f noise which represents state-of-the-art for a UHF resonator.

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Several new techniques, d i e l e c t r i c resonators, SAW resonatcrs, skimming mode b u l k a c o u s t i c resonators and h i g h overtone b u l k a c o u s t i c wave (PAW) rescnators a r e k i n g advanced f o r low noise s t a b i l i z a t i o n of vicrowave s i g n a l sources.

No abstract