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A Transformer-based Low Phase Noise And Widely Tuned CMOS Quadrature VCO
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- 발행일
- 200605
- 출처
- International Symposium on Circuits and Systems (ISCAS) 2006, pp.4014-4017
- 협약과제
- 06MB2400, 초고속 무선네트워크 SoC, 김천수
- 초록
- A VCO at 10GHz using the transformer-based LC tank in 0.18μm CMOS technology is designed. The LC tank is realized employing the drain-gate transformer feedback configuration. To apply to the pmos and nmos feedback path, two 2 - port transformers are used. The 2 - port transformer has symmetric structure and can be connected to enhance the quality factor of LC resonator. The simulated phase noise is -115dBc/Hz at the offset of 1MHz. The tuning range of 2.1GHz is achieved with the control voltage from 0V to 1.8V © 2006 IEEE.
- KSP 제안 키워드
- CMOS Technology, Feedback Paths(FBP), LC resonator, LC tank, Low phase noise, Quadrature VCO, Quality-factor(Q-factor), Transformer feedback, Tuning Range, control voltage, symmetric structure