Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2003.07c
- /
- Pages.1955-1957
- /
- 2003
Design of a Frequency Oscillator Using A Novel DGS
새로운 DGS 구조를 이용한 주파수 발진기 설계
-
Joung, Myung-Sup
(School of Electrical Engineering, Kookmin Univ.)
;
- Kim, Jong-Ok (School of Electrical Engineering, Kookmin Univ.) ;
-
Park, Jun-Seok
(School of Electrical Engineering, Kookmin Univ.)
;
-
Lim, Jae-Bong
(School of Electrical Engineering, Kookmin Univ.)
;
- Cho, Hong-Goo (School of Electrical Engineering, Kookmin Univ.)
-
정명섭
(국민대학교 전자정보통신공학부)
;
- 김종옥 (국민대학교 전자정보통신공학부) ;
-
박준석
(국민대학교 전자정보통신공학부)
;
-
임재봉
(국민대학교 전자정보통신공학부)
;
- 조홍구 (국민대학교 전자정보통신공학부)
- Published : 2003.07.21
Abstract
This paper presents a novel defected ground structure (DGS) and its application to a microwave oscillator. The presented oscillator is designed so as to use the suggested defected ground structure as a feedback loop inducing a negative resistance as well as a frequency-selective circuit. Applying the feedback loop between the drain and the gate of a FET device produces precise phase conversion in the feedback loop. The equivalent circuit parameters of the DGS are extracted by using a three-dimensional EM calculations and simple circuit analysis method. The implemented 1.07 GHz oscillator exhibits 0 dBm output power with over 15% dc-to-RF power efficiency and -106 dBc/Hz phase noise at 100 kHz offset from carrier.
Keywords