IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
A right-angle wideband transition between differential microstrip line and rectangular waveguide
Ziqiang YangLiming ZhangHaodong LinTao Yang
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2017 Volume 14 Issue 4 Pages 20161206


In this letter, a right-angle full Ka-band differential microstrip line (DML) to rectangular waveguide transition is proposed. A novel coupling probe configuration, which is considered to be a combination of a strip loop and a slot loop, is developed to improve the bandwidth of the transition. The 15 dB fractional bandwidth is increased from 33 to 40.6% compared with the right-angle DML-to-waveguide transition using multilayer PCB structure. To verify this transition, a back-to-back prototype is fabricated and measured. It provides an insertion loss of less than 1.2 dB and a return loss of better than 15 dB within a wide frequency range from 26.5 to 40 GHz. The measurement results show good agreements with the simulation ones.

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© 2017 by The Institute of Electronics, Information and Communication Engineers
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