Premium
Integrated triple‐wideband triple‐inverted‐F antenna covering 617–960/1710–2690/3300–4200 MHz for 4G/5G communications in the smartphone
Author(s) -
Wong KinLu,
Chang HsuanJui,
Li WeiYu
Publication year - 2018
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.31314
Subject(s) - antenna (radio) , wideband , engineering , computer science , electronic engineering , electrical engineering
An integrated triple‐inverted‐F antenna (TIFA) with 3 radiating strips and 2 hybrid (inductive and capacitive) shorting strips having a compact structure to provide a triple‐wideband operation in the smartphone for the fourth‐generation/fifth‐generation (4G/5G) communications is presented. The integrated TIFA can cover the 4G long‐term evolution low band (LTE LB) in 617–960 MHz, the 4G LTE middle/high bands (LTE M/HB) in 1710–2690 MHz, and the 5G bands in 3300–4200 MHz. The 3 widebands can be respectively controlled by 3 inverted‐F antenna structures (IFA1, IFA2, IFA3) integrated in the proposed TIFA, making it easy to implement for practical applications. It is also shown that by disposing 2 TIFAs at the top and bottom short edges of the smartphone, acceptable isolation there between in the LTE LB, LTE M/HB, and 5G bands is obtained, leading to good multi‐input multi‐output performance for the 4G/5G applications. The antenna structure and operating principle of the proposed TIFA are elaborated. Experimental results of the 2 fabricated TIFAs at the top and bottom short edges are presented and discussed.