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Semi‐transparent frequency reconfigurable antenna with DGS
Author(s) -
Lim M.C.,
Rahim S.K.A.,
Hamid M.R.,
Soh P.J.,
Eteng Aa
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.30915
Subject(s) - pin diode , ground plane , reconfigurable antenna , optoelectronics , diode , microwave , antenna (radio) , reflection coefficient , materials science , radiation pattern , biasing , electrical engineering , optics , coaxial antenna , physics , engineering , telecommunications , voltage
In this letter, a semi‐transparent frequency reconfigurable antenna is proposed and investigated. This antenna is implemented on glass as a substrate, AgHT‐4 as a radiating element and copper as its ground plane to result in a semi‐transparent feature. A pair of PIN diodes is utilized as microwave switches along with a DC biasing circuit. This proposed antenna is fed by a CPW arrangement and introduces unequal E‐shaped Defected Ground Structure (DGS) on the ground plane for modification of the electrical length. The antenna exhibits a −10 dB impedance bandwidth from 3 to 6 GHz when PIN diodes are ON, and a resonance at 4.75 GHz when pin diodes are OFF. The proposed antenna is fabricated to validate its performance in terms of reflection coefficient and radiation pattern.