Tunable waveguide-to-microstrip transition for W-band antenna

Aulia Dewantari, Jaeheung Kim, Se Yeon Jeon, Sumin Kim, Min Ho Ka

Research output: Contribution to journalArticle


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.

Original languageEnglish
Pages (from-to)1174-1180
Number of pages7
JournalIET Microwaves, Antennas and Propagation
Issue number8
Publication statusPublished - 2019 Jul 3

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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