Open AccessContinuously tunable 360° phase shifter based on planar waveguide technology for MM‐wave applications
Author(s) -
Rahimian Omam Z.,
AbdelWahab W.M.,
Gigoyan S.,
SafaviNaeini S.
Publication year - 2020
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2020.0632
Subject(s) - phase shift module , planar , materials science , phase (matter) , insertion loss , waveguide , slab , extremely high frequency , optoelectronics , dielectric , optics , engineering , physics , computer science , computer graphics (images) , structural engineering , quantum mechanics
A continuously tunable phase shifter based on a substrate integrated waveguide (SIW) is proposed for high‐performance applications at millimetre‐wave frequencies. The proposed phase shifter consists of two slots cut on the SIW's broad wall and a high dielectric constant (HDC) slab over the slots. The phase shifting mechanism is based on perturbing the electric field of the SIW‐slot by putting a HDC slab over two slots. The fabricated phase shifter exhibits linear phase‐frequency response behaviour with an average insertion loss less than 2 dB over a phase shift range of 360 ° in the operating frequency band (29–31 GHz).