2.4/5.7-GHz CMOS dual-band low-IF architecture using Weaver-Hartley image-rejection techniques

Chin-Chun Meng*, Tzung Han Wu, Jin Siang Syu, Sheng Wen Yu, Kuan Chang Tsung, Ya Hui Teng

*Corresponding author for this work

Research output: Contribution to journalArticle

17 Scopus citations

Abstract

A 2.4/5.7-GHz dual-band Weaver-Hartley architecture, using 0.18-μm CMOS technology, is demonstrated in this paper. The 2.4-GHz signal is set to be the image signal when the desired signal is at 5.7 GHz, and vice versa. Since the Weaver and Hartley systems are combined into this architecture, the demonstrated architecture rejects not only the first image signal, but also the secondary image signal. The image-rejection ratios of the first image signal and the secondary image signal are better than 40 and 46 dB, respectively. In this paper, a diagrammatic explanation is employed to obtain the image-rejection mechanisms of the Weaver-Hartley architecture.

Original languageEnglish
Article number4773159
Pages (from-to)552-561
Number of pages10
JournalIEEE Transactions on Microwave Theory and Techniques
Volume57
Issue number1
DOIs
StatePublished - 1 Jan 2009

Keywords

  • Divider
  • Hartley architecture
  • Image rejection
  • Secondary image rejection
  • Weaver architecture

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