Open AccessTunable waveguide‐to‐microstrip transition for W‐band antenna
Author(s) -
Dewantari Aulia,
Kim Jaeheung,
Jeon SeYeon,
Kim Sumin,
Ka MinHo
Publication year - 2019
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2018.5488
Subject(s) - microstrip , waveguide , extremely high frequency , materials science , microstrip antenna , antenna (radio) , optics , optoelectronics , frequency band , substrate (aquarium) , w band , patch antenna , physics , telecommunications , computer science , oceanography , geology
At millimetre‐wave frequencies, the discrepancy between simulation and measurement comes from the relative permittivity tolerance and fabrication tolerance. This discrepancy can mainly cause resonant frequency shift. A tunable waveguide‐to‐microstrip transition for the W‐band antenna is proposed to overcome this discrepancy. A typical transition consists of a microstrip probe on a substrate and a waveguide back short in a fixed structure. The tunability has been designed by making a movable back short through WR‐10 waveguide. This design can change the back‐short distance mechanically to tune resonant frequency. The tunability of this design has been verified with a W‐band substrate integrated waveguide (SIW) slot array radar antenna.