Octave Bandwidth High-Performance Microstrip-to-Double-Ridge-Waveguide Transition
This letter presents a microstrip-to-double-ridge-waveguide transition with high performance in the octave bandwidth operation between 6 and 12 GHz. The structure is based on a three-chamfered-step transformer supported directly over the microstrip line without soldering. The electric contact is ens...
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Published in | IEEE microwave and wireless components letters Vol. 30; no. 7; pp. 637 - 640 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
IEEE
01.07.2020
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Subjects | |
Online Access | Get full text |
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Summary: | This letter presents a microstrip-to-double-ridge-waveguide transition with high performance in the octave bandwidth operation between 6 and 12 GHz. The structure is based on a three-chamfered-step transformer supported directly over the microstrip line without soldering. The electric contact is ensured by the pressure between the first step of the transformer and a groove in the microstrip line. The transition is formed by two halves, minimizing the manufacturing complexity and the loss contact. A sequential procedure has been followed in the design process. Initially, a port directly feeding the planar structure has been considered, obtaining a simulated return loss level better than 25 dB in the whole operation band. Afterward, feeding through an SubMiniature version A (SMA) coaxial connector, a simulated return loss level better than 20 dB has been obtained. In order to verify the above theoretical simulations, a back-to-back arrangement has been measured, connecting two similar transitions. The prototype shows an insertion loss for a single transition lower than 0.8 dB in the 67% fractional bandwidth from 6 to 12 GHz. |
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ISSN: | 1531-1309 1558-1764 |
DOI: | 10.1109/LMWC.2020.3000283 |