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Broadband and high gain stacked microstrip antenna array
Author(s) -
Wadkar Suman,
Hogade Balaji,
Chopra Rinkee,
Kumar Girish
Publication year - 2019
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.31813
Subject(s) - microstrip antenna , bandwidth (computing) , broadband , antenna gain , materials science , optoelectronics , microstrip , impedance matching , high gain antenna , antenna array , electrical engineering , electronic engineering , engineering , electrical impedance , antenna (radio) , telecommunications , antenna factor
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.