The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)
- Volume 8 Issue 4
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- Pages.151-155
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- 1983
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- 1226-4717(pISSN)
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- 2287-3880(eISSN)
The Design of Variable Frequency Oscillator using SAW Device
탄성표면파 소자를 이용한 가변 주파수 발진기의 설계
- Moon, Geon (Dept. of Communication Engineering, Kunsan Fishery Junior College) ;
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Jun, Kye-Suk
(Dept. of Electronic Engineering, Kyunghee University) ;
- Jeong, Kwan-Su (Dept. of Electronic Engineering, Kyunghee University)
- Published : 1983.12.01
Abstract
In this paper, it is studied a novel SAW oscillator by applicating SAW delay characteristics, which can be variable its frequencies by consiting of two output IDT(Inter-Digital Transducer) without external filtering and resonating circuits. The results of experiments showed the temperature characteristics of AT-cut quartz which has been used as frequency-determing substrate of SAW oscillator was good. Though the variable frequencies range was narrow but the experiments showed the possibility to broaden its frequencies range by design of SAW device, and also confromed the stability of fundamental wave oscillating in high frequency range.
본 논문에서는 탄성 표면과 자연특성을 응용하여 외부 여과기와 동조회로를 사용하지 않고 2개의 출력 구성하여 발전 주파수를 가변할 수 있는 새로운 탄성표면과 발진기에 관하여 연구하였다. 실험결과 탄성표면과 발진기의 주파수 결정소자로서 사용된 AT-cut수정의 온도 특성은 안정하였으며 가변 주파수의 범위는 좁으나 탄성표면과 소자의 설계에 따라 그 가변범위를 확대할 수 있음을 알 수 있었고 또한 높은 주파수내에서 기본파 발진의 안정성을 확인하였다.
Keywords