A novel concept for 2D butler matrix with multi-layers technology

Cheng Hung Hsieh, Yi Ting Lin, Hsiang Chieh Jhan, Zuo-Min Tsai

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations


A novel 2D beamformer with 2D sixteen beam switching capability was proposed in this paper. Different from just reducing ID Butler matrix size to achieve compact 2D beamforming network (BFN), the proposed architecture also reduces the complexity of interface connection between the BFN and antenna array. Thanks to the new design concept proposed in this paper, the circuit size is only 2.3λo × 2.3λo × 0.2λ>. This 2D beamformer is very suitable for fabricating by multi-layer technology. It is very convenient to integrate with antenna array due to the similar plane size. Furthermore, the less loss would be achieved due to the elimination of long coaxial cables. To the best of the author's knowledge, this is the first demonstration of such sixteen beams of 2D beamformer by multi-layer PCB technology.

Original languageEnglish
Title of host publication2018 Asia-Pacific Microwave Conference, APMC 2018 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages3
ISBN (Electronic)9784902339451
StatePublished - 6 Nov 2018
Event30th Asia-Pacific Microwave Conference, APMC 2018 - Kyoto, Japan
Duration: 6 Nov 20189 Nov 2018

Publication series

NameAsia-Pacific Microwave Conference Proceedings, APMC


Conference30th Asia-Pacific Microwave Conference, APMC 2018


  • Butler matrix
  • Multi-layer PCB technology
  • Two dimensional (2D) beamformer

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