Frequency reconfigurable millimeter-wave antenna design for 5G application Mamta Kumari*, Singh Raj Kumar** *Department of Applied Physics, Cambridge Institute of Technology, Tatisilwai, Ranchi-India **Department of Physics, Ranchi University, Ranchi, India Online published on 24 October, 2019. Abstract This paper addresses frequency reconfigurable U-shaped patch antenna that can operate at Ka-band of 26.5 GHz to 40 GHz for the 5th Generation (5G) application. The effective length of antenna current is controlled using the MEMS switch mounted in between two L-shape strips forming the U structure with square shape wing patch. Inductive and capacitive coupling between the two L-patches helps in achieving two-frequency band reconfiguration. When the switch opens for the OFF condition both the asymmetrical L-shaped patch get capacitive coupled along with the square shaped wing as before. Geometrical shape and size of the substrate is exactly the same as the black coloured patch. Dielectric constant has been appreciably reduced by using RT Rogers-air combination as substrate. Antenna gain of 9dB is obtained for the two frequency band at par with other standard works. Total efficiency falls in the range of 70–75%, VSWR in between 1–2. Key radiation patterns are also described in the paper. Top Keywords Patch antenna, Reconfigurable antenna, Frequency, reconfigurable antenna Millimeter wave, 5th generation, Ka-band, MEMS. Top |