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Multi‐standard, multi‐band planar multiple input multiple output antenna with diversity effects for wireless applications
Author(s) -
Malviya Leeladhar,
Kartikeyan Macha Varam,
Panigrahi Rajib K.
Publication year - 2019
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.21551
Subject(s) - standing wave ratio , wimax , mimo , antenna (radio) , microstrip , specific absorption rate , wireless , microwave , electrical engineering , dielectric , electronic engineering , microstrip antenna , optoelectronics , materials science , physics , telecommunications , computer science , engineering , channel (broadcasting)
Wireless generations require the miniaturized radiating elements for the portable devices. This research article presents a miniaturized multiple input multiple output (MIMO) antenna for IEEE 802.11 (WLAN) and IEEE 802.16 (WiMAX) wireless standards. The multi‐standard, multi‐band MIMO with 1 × 2 diversity arms is impedance matched with 50 Ω microstrip line on FR‐4 dielectric substrate having dielectric constant 4.4 and 1.524 mm thickness. The simple low profile design covers16.46% (2.23‐2.64 GHz) and 12.37% (3.26‐3.70 GHz) microwave frequency bands, with voltage standing wave ratio (VSWR) ≤ 2 achieves more than 12.5 dB of isolation between radiating ports. The proposed MIMO with inverted L shaped slot exhibits more than 73% efficiency, and more than 4 dBi gain at resonant frequencies. The presented MIMO is designed on FR‐4 dielectric substrate of size 45.1 × 90.2 mm 2 . The compact size of the radiating element is 6.7 × 6.7 mm 2 . The effect of radiations on the body has been evaluated using specific absorption rate (SAR) and found to be in safety limit.