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Low profile single‐layer U ‐slot loaded shorted‐patch antenna for wireless communications
Author(s) -
Morshed K. M.,
Karmokar D. K.,
Esselle K. P.
Publication year - 2017
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.30712
Subject(s) - directivity , microstrip antenna , patch antenna , reflection coefficient , antenna factor , optics , antenna (radio) , bandwidth (computing) , antenna measurement , electrical engineering , antenna efficiency , slot antenna , physics , acoustics , materials science , telecommunications , engineering
A U‐slot loaded single‐layer compact shorted‐patch antenna is presented for wireless communications in the 5.8 GHz band. The size of the prototyped antenna is only 30 mm × 30 mm, which is very small compared to single‐layer antennas for the same frequency band. The measured −10 dB reflection coefficient bandwidth of the antenna is 140 MHz (5.67–5.81 GHz). The peak measured boresight gain and directivity of the antenna are 7.4 and 8 dBi, respectively, and their variation within the band is less than 1 dB. The measured 3‐dB beamwidths of the antenna at 5.8 GHz are 79° and 69° in the E‐plane and H‐plane, respectively. An easy way to shift the antenna resonance frequency is also investigated.