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Monopole‐like and semi‐directional reconfigurable pattern antenna for wireless body area network applications
Author(s) -
Mohamadzade Bahare,
Simorangkir Roy B. V. B.,
Hashmi Raheel M.,
Gharaei Reza,
Lalbakhsh Ali
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.31968
Subject(s) - monopole antenna , radiation pattern , antenna (radio) , pin diode , hfss , patch antenna , ground plane , helical antenna , microstrip antenna , reconfigurable antenna , electrical engineering , physics , engineering , slot antenna , antenna efficiency , diode
A simple, low profile and pattern reconfigurable antenna with a full‐ground plane is presented for use in wireless body area networks at 5.8 GHz ISM band. The antenna consists of a probe‐fed circular patch, and a parasitic ring surrounding it. The ring is loaded with a rectangular slot on each side of the patch, and two PIN diodes are added in the center of each slot. With all the diodes in on‐state, the antenna presents monopole‐like radiation patterns with the gain of 4.2 dBi for maximum coverage on the body, whereas the pattern of the antenna can be directed to ±15° with an increased gain of 2.9 dBi, by turning off each diode for the semi‐directional patterns states. Measured results of the fabricated prototype antenna show good agreement with numerical results obtained using Ansys HFSS.