Low-cost multibeam millimeter-wave array antennas for 5 G mobile applications

Ahmadi Najafabadi, Amir Mohsen and Abdul Ghani, Firas and Tekin, İbrahim (2022) Low-cost multibeam millimeter-wave array antennas for 5 G mobile applications. IEEE Transactions on Vehicular Technology, 71 (12). pp. 12450-12460. ISSN 0018-9545 (Print) 1939-9359 (Online)

This is the latest version of this item.

Full text not available from this repository. (Request a copy)


This paper presents a low-cost, compact, multibeam planar antenna system with a wide beam coverage angle at 28 GHz for 5 G applications. The proposed microstrip based design includes two branch-line couplers and a Butler matrix with and series-fed array antennas. Unlike the conventional Butler matrix and branch-line coupler, which generally can generate 4 and 2 beams, respectively, the designed configuration employs a novel feeding technique which allows the system to generate 7 beams for butler matrix and 3 beams for the branch-line coupler. This system covers a wider spatial range, due to its unique placement of the branch-line couplers and the antennas, perpendicular to the sides of the main beamforming and the array antenna architecture. The measured gain, for the 13 beams, varied between 11.2 and 14.1 dBi at 28 GHz. A wide impedance bandwidth for the entire 26.5 to 29.5 GHz band was achieved, while more than a 10% fractional radiation bandwidth was obtained with a gain value over 10 dBi. The beamforming networks and rectangular series-fed microstrip array system was fabricated using low-cost PCB prototyping on Rogers 4003 C with dimensions of.
Item Type: Article
Uncontrolled Keywords: 28 GHz; 5G mobile communication; Antenna arrays; Array signal processing; beam forming network; Beam steering; Butler matrices; Couplers; fifth-generation (5 G) antennas; Gain; Microstrip antenna arrays; microstrip array; millimeter-waves; multibeam array antenna; series-fed array
Divisions: Faculty of Engineering and Natural Sciences > Academic programs > Electronics
Faculty of Engineering and Natural Sciences
Depositing User: İbrahim Tekin
Date Deposited: 07 Sep 2023 14:52
Last Modified: 07 Sep 2023 14:52
URI: https://research.sabanciuniv.edu/id/eprint/47810

Available Versions of this Item

Actions (login required)

View Item
View Item