바랙터 다이오드를 이용한 X-밴드 전압제어 발진기
X-band Voltage Controlled Oscillator using Varactor Diode
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초록
In this paper, a X band voltage controlled oscillator is proposed. The oscillator uses a transistor as an oscillating element and its oscillating frequencies are controlled by the tuning voltage of varactor diode. Using the circuit simulation tools, the matching circuits between the transistor and varactor diode, its input and output matching circuits, and a feedback circuits are designed. The measured results of the fabricated oscillator show that its oscillation frequencies are from 10.50GHz to 10.88GHz according to the turning voltages of 1V to 18V, its output power levels are about 4.3dBm, and its phase noise is around -43.5dBc/Hz at 100kHz offset frequency of 10.5GHz.
Abstract
In this paper, a X band voltage controlled oscillator is proposed. The oscillator uses a transistor as an oscillating element and its oscillating frequencies are controlled by the tuning voltage of varactor diode. Using the circuit simulation tools, the matching circuits between the transistor and varactor diode, its input and output matching circuits, and a feedback circuits are designed. The measured results of the fabricated oscillator show that its oscillation frequencies are from 10.50GHz to 10.88GHz according to the turning voltages of 1V to 18V, its output power levels are about 4.3dBm, and its phase noise is around -43.5dBc/Hz at 100kHz offset frequency of 10.5GHz.
참고문헌 (8)
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- 최재원, "마이트로스트립 사각 개방 루프 SRR를 이용한 저위상 잡음 전압제어발진기", 전자공학회지, 44(12), pp.1181~1186
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- 박창현, "낮은 위상잡음을 갖는 X-band 전압제어 유전체 공진형 발진기의 설계 및 제작", 전자공학회논문지 - TC, 41(05), pp.323~330 (2004), 대한전자공학회
- 성연재, "X밴드 광대역 전압조정 발진기의 설계 및 제작", 전자공학회지, 42(3), pp.691~694 (2002)
- Eric Holzman, "Solid State Microwave Power Oscillator Design" (1992), Artech House
- Reinhold Ludwig, "RF Circuit Design Thory and Applications" (2000), Prentice-Hall