Broadband and high gain stacked microstrip antenna array. Issue 7 (26th February 2019)

• Record Type: Journal Article
• Authors: Wadkar, Suman; Hogade, Balaji; Chopra, Rinkee; Kumar, Girish
• Is Part Of: Microwave and optical technology letters. Volume 61:Issue 7(2019:Jul.)
• Page Start: 1882
• Page End: 1888
• Publication Date: 2019-02-26
• Subjects: broadband microstrip antenna -- broadband microstrip array -- electromagnetically coupled -- high gain -- multilayer multiresonator; Microwaves -- Periodicals; Optics -- Periodicals; 621
• DOI: 10.1002/mop.31813
• Languages: English
• ISSNs: 0895-2477

Abstract

Abstract: In this article, broadband and high gain antennas are designed for bandwidth from 1.7 to 2.5 GHz which covers GSM 1800, 3G, 4G, and Wi‐Fi applications. The antennas are designed using 1 bottom and 2 top patches (1B2T) stacked microstrip antenna configuration and its array. The antenna structures consist of copper metallic plate as the bottom patch and low‐cost FR4 substrate for the top patches in air suspended mode. The antennas are enclosed in a metallic cavity which supports top substrate and increases gain and front‐to‐back ratio. The bandwidth for | S 11 | ≤ −10 dB and peak gain for this configuration are 41.5% and 11.9 dBi, respectively. A broadband 2 × 2 array of 1B2T configuration is designed using tapered feed network to provide impedance matching for broad bandwidth. The structures are designed, fabricated, and tested. A bandwidth of 44% and peak gain of 16.6 dBi has been achieved using 2 × 2 array. The simulated and measured results are in good agreement. The proposed antennas are good candidates for wireless communication systems.