Realization of Ultra-High Quality Factor of Dual-T Quartz Crystal Resonator Circuit

被引：0
|
作者：
Senanayaka, Shasika Shaminda [1 ]
Haba, Tomoyuki [1 ]
Yamamoto, Shyunya [1 ]
Izumiya, Shyoji [1 ]
Adachi, Takehiko [1 ]
机构：
[1] NIHON DEMPA KOGYO CO LTD, Engn Dept 3, Sayama, Osaka, Japan
来源：
2012 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS) | 2012年
关键词：
crystal resonator; quality factor; dula-T circuit; resonator; oscillator;
D O I：
10.1109/ULTSYM.2012.0549
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, we have shown the method to obtain the ultra-high quality factor of a dual-T crystal resonator circuit. In this circuit, the phase shifters are inserted in each T circuit of the dual-T crystal resonator circuit. We have made the simulation and measurement of the proposed dual-T crystal circuit. The attained effective Q is about three times bigger than the unloaded Q of a crystal resonator (about 140,000). And we have made the oscillator using this dual-T circuit and made the simulation of phase noise. 30 through 60 dB improvement of phase noise is suggested in 1/f offset frequency region. The measurement shows the comparable phase noise improvement.
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页数：3
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