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Design and Fabrication of the Ka-band Waveguide to Microstrip Transition using Probe structure  

Kwon, Hyuk-Ja (Samsung Thales, H/W team)
Lee, Sung-Ju (Samsung Thales, H/W team)
Jang, Ho-Joon (Samsung Thales, H/W team)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.45, no.7, 2008 , pp. 67-71 More about this Journal
Abstract
We report the waveguide to microstrip transition using probe structure for Ka-band transceiver. The waveguide to microstrip transition is composed of probe, inductive line, ${\lambda}/4$ impedance transformer, and $50{\Omega}$ microstrip line. For design of the transition, we optimized the characteristic impedances and the lengths of the component parts. The fabricated transition exhibits an insertion loss of 1.3 dB and the input/output return losses of below 14 dB between 30 and 40 GHz. The insertion loss of each transition is about $0.5{\sim}0.6dB$, considering the losses in the microstrip line and input/output waveguides.
Keywords
Probe; Waveguide; Microstrip; Transition; Ka-band;
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