Dynamic range reduction due to RF and image signal co-existence in a highly-merged 2.4/5.7-GHz dual-band low-IF downconverter

Jin Siang Syu*, Chin-Chun Meng, Guo Wei Huang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

A highly-merged 2.4/5.7-GHz dual-band low-IF downconverter is demonstrated using O.18-μm CMOS technology. Weaver and Hartley architectures are utilized to achieve high image-rejection ratio (lRR) of first and second image signals. The first LO (LO1) is set exactly halfway between the two bands. That is, the 2.4/5.7-GHz bands are the first image signal of each other. However, in a real home/commercial environment, a 5.7/2.4-GHz blocking signal is present when the 2.4/5.7-GHz band is desired and degrades the dynamic range of the receiver. Therefore, the dynamic range degradation due to the co-existence of RF and image signals is discussed in this paper.

Original languageEnglish
Title of host publication2010 IEEE MTT-S International Microwave Symposium, MTT 2010
Pages1016-1019
Number of pages4
DOIs
StatePublished - 15 Oct 2010
Event2010 IEEE MTT-S International Microwave Symposium, MTT 2010 - Anaheim, CA, United States
Duration: 23 May 201028 May 2010

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
ISSN (Print)0149-645X

Conference

Conference2010 IEEE MTT-S International Microwave Symposium, MTT 2010
CountryUnited States
CityAnaheim, CA
Period23/05/1028/05/10

Keywords

  • Dual-band
  • Dual-conversion
  • Dynamic range
  • Image rejection
  • Low-IF

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