A two‐layer beam‐steering array antenna with 4 × 4 modified Butler matrix fed network for switched beam application | Zendy

Razi Zahra Mousavi | Zendy; Rezaei Pejman | Zendy

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A two‐layer beam‐steering array antenna with 4 × 4 modified Butler matrix fed network for switched beam application

Author(s) -

Razi Zahra Mousavi,

Rezaei Pejman

Publication year - 2020

Publication title -

international journal of rf and microwave computer‐aided engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.335

H-Index - 39

eISSN - 1099-047X

pISSN - 1096-4290

DOI - 10.1002/mmce.22028

Subject(s) - beam steering , phase shift module , optics , antenna array , phased array , radiation pattern , antenna (radio) , physics , bandwidth (computing) , beam waveguide antenna , beam (structure) , telecommunications , periscope antenna , engineering , insertion loss

This paper presents a novel two layers beam‐steering array antenna fed by a 4 × 4 modified Butler matrix. Each of the radiation elements have been replaced by a collection of 2 × 2 circularly polarized (CP) square patches, which joined together by a modified sequentially rotated feed network. The antenna array consists of 2 × 5 CP square patches, which connected to four ring sequential rotation and fed by butler matrix. The proposed Butler matrix which plays a role as beam‐steering feed network consists of four novel 90° circular patch couplers and two 45° half circular patch phase shifter. Altogether, using of a 2 × 5 phased array antenna and a modified Butler matrix cause to empower array antenna for covering frequency range between 4.67 to 6.09GHz, the maximum gain of 14.98 dB and 3‐dB axial ratio bandwidth of 1.2GHz (4.9~6.1GHz) is attained.

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