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A UWB semi‐ring MIMO antenna with isolation enhancement
Author(s) -
Dhar Sagar K.,
Sharawi Mohammad S.
Publication year - 2015
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.29245
Subject(s) - microwave , antenna factor , radiator (engine cooling) , ground plane , bandwidth (computing) , antenna (radio) , optics , physics , materials science , diversity gain , antenna efficiency , electrical engineering , antenna measurement , mimo , optoelectronics , dipole antenna , engineering , telecommunications , channel (broadcasting)
In this article, an ultrawideband two element multiple‐input‐multiple‐output antenna is presented. The antenna is designed on a low cost FR4 substrate having an overall size of 50 × 90 × 1.52 mm 3 . The measured −10dB impedance bandwidth covers 1.85–10.6 GHz. The size of each radiator is 12 × 24 mm 2 which is 0.011λ 0 2where λ 0 is the free space wavelength at 1.85 GHz. The minimum measured gain and efficiency are found to be 1.22 dBi and 51.8%, respectively. The isolation of the antenna is enhanced using a fork shaped structure. The measured isolation is more than 10 dB over the entire operating band. The measured envelop correlation coefficient is less than 0.16 while a diversity gain of approximately 9.5 dB is achieved. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:1941–1946, 2015