A 1.3-2.08 GHz Filtering Power Divider with Bandwidth Control and High In-Band Isolation

Pei-Ling Chi, Tao Yang

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

This letter proposes a varactor-based filtering power divider that allows for reconfigurable operating frequency and bandwidth with high in-band isolation. A simple but effective tuning scheme was used to attain good impedance matching and isolation for all tunable states. Experimental results show that, for input return loss > 16.6 dB, the center frequency and 1 dB constant absolute bandwidth can be tuned from 1.3 to 2.08 GHz and from 70 to 130 MHz, respectively. Moreover, this work demonstrates > 26 dB output isolation, < ± 0.23 dB magnitude imbalance, and < ± 1.3° phase imbalance. Measured and simulated results are in good agreement.

Original languageEnglish
Article number7470572
Pages (from-to)407-409
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Volume26
Issue number6
DOIs
StatePublished - 1 Jun 2016

Keywords

  • Bandwidth control
  • filtering power divider
  • frequency-agile
  • in-band isolation
  • reconfigurable

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