Earticle

초록

영어

In this paper, a Quadrature Voltage Controlled Oscillator of a wireless transceiver operating in the 5GHz UNII band of the wireless LAN 802.11a standard was proposed. In addition, a new structure of low-noise, low-power Quadrature Coupled VCO was proposed using the quadrature phase output as an input to the switching current source. If this structure is applied to other circuits such as a structure in which the current source is separated or a common use of a current source, a phase noise characteristic of 17 dB better than the existing VCO can be obtained. In particular, it is designed to operate with low power in a simple structure compared to the existing in-phase QVCO. The circuit was designed to operate with a supply voltage of 1.2V by the TSMC 0.13μm RF CMOS process. The measured VCO has a large tuning range of 20% operating at frequencies of 4.5 - 5.6 GHz, and phase noise of -117 dBc/Hz or less was obtained at the 1 MHz offset. The output phase error of the proposed QVCO was less than 0.5 degrees, and the total power consumption was able to obtain 5.3 mW at 1.2V.

목차

Abstract
1. Introduction
2. QVCO proposed by Rofougaran
3. Proposed Low Noise Quadrature VCO Design
4. Current Reference (Iref) circuit for PVT variation
5. Conclusions
6. Futurework
Acknowledgement
References

키워드

저자

• Miyoung Lee [ Associate Professor, Department of Electrical and Electronics Engineering, Hannam University ] Corresponding Author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Internet, Broadcasting and Communication

• 간기

  계간

• pISSN

  2288-4920

• eISSN

  2288-4939

• 수록기간

  2009~2025

• 십진분류

  KDC 326 DDC 380