Co-designed 3+3 port dual-band broadside tri-modal patch antenna

Chi-Yuk Chiu, Buon Kiong Lau, Ross Murch

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A co-designed (3+3)-port antenna for dual-band operation that requires no feeding or decoupling network is proposed and verified. The antenna consists of six ports which are divided into two groups that resonate in two different
frequency ranges. The basic radiating element is a tri-modal patch in a folded snowflake-shaped structure with the largest antenna dimension of 0.48λ1 or 0.68λ2, where λ1 and λ2 are the wavelengths in air at the center frequencies of the lower and upper operating bands, respectively. Measurement results show
that the 10 dB impedance bandwidths of the two respective bands are 19.7% and 14.4%. The proposed antenna exhibits compact, multiport, multiband and broadside radiation characteristics which are not only suitable for dual-band MIMO applications, but also for energy harvesting systems with spatial and frequency diversities, or dual-function wireless systems with simultaneous
information and power transfer.
Original languageEnglish
Pages (from-to)767-777
JournalIEEE Open Journal on Antennas and Propagation
Publication statusPublished - 2021

Subject classification (UKÄ)

  • Telecommunications
  • Signal Processing


  • characteristic modes
  • shared aperture
  • multiple-input multiple-output (MIMO) antenna
  • multiband antenna
  • broadside radiation


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