Compact and Broadband 4 × 4 SIW Butler Matrix with Phase and Magnitude Error Reduction

Saeid Karamzadeh, Vahid Rafii, Mesut Kartal, Bal S. Virdee

Research output: Contribution to journalArticlepeer-review

64 Citations (Scopus)

Abstract

A novel two-layer 4 × 4 Butler matrix by feeding substrate integrated waveguide is designed and realized. The proposed Butler matrix has broadband operation frequency range of over 8.5 to 10.6 GHz with excellent phase and amplitude performance. The proposed design in this letter prevents the loss of amplitude and phase shifts in Butler matrix and decreases amplitude imbalance to less than 0.6 dB. This is achieved by reducing the size of Butler matrix and avoiding the use of a line length which causes a phase shift.

Original languageEnglish
Article number7327245
Pages (from-to)772-774
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Volume25
Issue number12
DOIs
Publication statusPublished - Dec 2015

Bibliographical note

Publisher Copyright:
© 2015 IEEE.

Keywords

  • Beamforming feed network
  • Butler matrix
  • Substrate integrated waveguide
  • microwave component

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