Liquid crystalline polymer (LCP) based lumped-element bandpass filters for multiple wireless applications

Sidharth Dalmia, Venky Sundaram, George White, Madhavan Swaminathan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

24 Scopus citations

Abstract

This paper presents for the first time the design, implementation, measurements and reliability data of multiple RF filters on Liquid Crystalline Polymer based substrates for different communication standards such as 802.11 a/b/g, LMDS/MMDS, cellular and Bluetooth applications. The first examples of this platform substrate technology are very compact 12mm3 fully packaged SMT front-end filters with center frequencies of 2.45 and 5.775 GHz. One embodiment of the filter at 2.45 GHz, which is well suited for 802.11 b/g and Bluetooth type applications, provides a passband of 100 MHz with maximum inband Insertion loss less than 2dB at 25°C, greater than 25dB attenuation at 2700-2800 MHz, greater than 10dB attenuation below 2.2GHz, greater than 20dB rejection at the second and third harmonic and inband VSWR less than 1.5 matched to 50 Ohms at the input and output.

Original languageEnglish (US)
Title of host publication2004 IEEE MITT-S International Microwave Symposium Digest
EditorsD.B. Denniston
Pages1991-1994
Number of pages4
DOIs
StatePublished - 2004
Event2004 IEEE MITT-S International Microwave Symposium Digest - Fort Worth, TX, United States
Duration: Jun 6 2004Jun 11 2004

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
Volume3
ISSN (Print)0149-645X

Conference

Conference2004 IEEE MITT-S International Microwave Symposium Digest
Country/TerritoryUnited States
CityFort Worth, TX
Period6/6/046/11/04

All Science Journal Classification (ASJC) codes

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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