Earticle

초록

영어

A low noise 6th-order elliptic low-pass filter is proposed and implemented. For the high level integration of multi-standard wireless terminal at low cost, the direct conversion architecture is favored for the RF transceiver, and a low noise channel selection filter with enough out-of-band suppression takes a critical role for the direct conversion receiver. For the noise optimized filter design, a noise analysis, design procedure and techniques are described for a biquad circuit and the 6th- order elliptic filter. The filter is implemented in a 0.35μm BiCMOS technology and has the 3dB cutoff frequency of 2.3MHz. The chip size is 1.0×1.15mm2. The measurement results show that the noise characteristics are optimized by proper allocation of the biquad circuit component values and biquad placement as proposed. And also, the filter shows good linearity. The filter consumes 3.8mA current at 1.8V supply and provides about 60dB stopband rejection, input referred noise of 27 .8 nV Hz and IIP3 of 22.4 dBm. The filter performance meets the WCDMA standard specification.

목차

Abstract
 1. Introduction
 2. Channel Selection Filter Design for WCDMA
 3. Filter Noise Analysis
  3.1. Noise Generated by Passive Components
  3.2. Noise Generated by Active Components
 4. Noise Optimized Filter Design
 5. Experimental Results
 6. Conclusions
 Acknowledgments
 References

키워드

저자

• Seonghan Ryu [ Hannam University, Dept. of Information and Communication Engineering ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Software Engineering and Its Applications

• 간기

  월간

• pISSN

  1738-9984

• 수록기간

  2008~2016

• 등재여부

  SCOPUS

• 십진분류

  KDC 505 DDC 605