A scanning beam antenna fed by a 7 × 8 Butler matrix for 5G applications. Issue 5 (21st February 2022)

• Record Type: Journal Article
• Authors: Wu, Ming; Zhang, Bing; Zhou, Yanping; Huang, Kama
• Is Part Of: International journal of RF and microwave computer-aided engineering. Volume 32:Issue 5(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-02-21
• Subjects: Butler matrix -- scanning beam antenna -- substrate integrated waveguide -- the fifth‐generation mobile network; Microwave devices -- Computer-aided design -- Periodicals; Computer-aided engineering -- Periodicals; 621.3813
• DOI: 10.1002/mmce.23087
• Languages: English
• ISSNs: 1096-4290

Abstract

Abstract: A 7 × 8 Butler matrix (BM) beam‐forming network operating at Ka ‐band is proposed to feed a 8 × 8 slot array. By merging the two central input ports of the BM into one port, the BM can provide output signals with equal phase, thereby generating a boresight beam. Measured results show that the proposed antenna has impedance bandwidth of 29.5–30.5 GHz, while the gain lies in the range of 14.7–21.8 dBi. Seven beams are realized, including a boresight beam, covering the range from −58° to 58°. In order to verify this concept, the feeding network and antenna are designed and manufactured. The measured results are in good agreement with simulation. It is a capable candidate for 5G mobile terminal applications.