Application of active electromagnetic bandgaps to the design of tunable resonators in CPW technology

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Abstract

Capacitively coupled resonators with wide tuning range have been proposed in coplanar waveguide (CPW) technology, based on the concept of electromagnetic bandgaps (EBGs). By loading the resonator with shunt-connected varactor diodes, the phase velocity of the line and, hence, the resonant frequency of the structure can be electrically controlled. Due to the slow-wave effect related to the presence of the varactors, a certain level of miniaturization is also achieved. Moreover, the frequency-selective properties of EBGs are used to reject the first spurious frequency of the resonators. © 2005 Wiley Periodicals, Inc.
Original languageEnglish
Pages (from-to)229-232
JournalMicrowave and Optical Technology Letters
Volume45
DOIs
Publication statusPublished - 5 May 2005

Keywords

  • Coplanar waveguide (CPW)
  • Electromagnetic bandgap (EBG)
  • Microwave resonators
  • Varactor diodes

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