Open AccessFull Ka‐band right‐angle transition from substrate integrated waveguide to air‐filled rectangular waveguide
Author(s) -
Dong Jun,
Yang Ziqiang,
Peng Hao,
Yang Tao
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2015.2462
Subject(s) - ka band , waveguide , broadband , extremely high frequency , optics , materials science , bandwidth (computing) , insertion loss , substrate (aquarium) , fractional bandwidth , electric field , impedance matching , electrical impedance , optoelectronics , telecommunications , physics , electrical engineering , engineering , geology , oceanography , resonator , quantum mechanics
A full Ka‐band right‐angle transition from a substrate integrated waveguide (SIW) to an air‐filled rectangular waveguide is proposed. A two‐step ridged waveguide and the SIW with an etched slot are jointly designed to obtain a better electric field and impedance matching between the SIW and the air‐filled rectangular waveguide. To verify the method, a back‐to‐back transition prototype at Ka‐band is designed, fabricated and measured. The measured results show that the insertion loss of a single transition is <0.55 dB over the entire Ka‐band from 26.5 to 40 GHz. Moreover, the 15 dB fractional bandwidth is increased from 25.7 to 40.9% compared with conventional right‐angle SIW‐to‐waveguide transition. This broadband transition can be a good candidate for broadband millimetre‐wave applications.