Empty Substrate Integrated Waveguide Coupler and Transition Structure to WR-3 Waveguide
This paper proposes a sub-THz Riblet coupler based on the empty substrate integrated waveguide (ESIW) and a transition structure between ESIW and a WR-3 rectangular waveguide. The ESIW is fabricated through laser engraving and electroplating processes. The transition is achieved simply by a rectangu...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2025-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10909441/ |
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| Summary: | This paper proposes a sub-THz Riblet coupler based on the empty substrate integrated waveguide (ESIW) and a transition structure between ESIW and a WR-3 rectangular waveguide. The ESIW is fabricated through laser engraving and electroplating processes. The transition is achieved simply by a rectangular cavity and can be modeled by two coupled notch filters. The measured insertion loss of a single transition is 1.25 dB from 250 to 313 GHz. The amplitude imbalance of the coupler is about 2 dB and the phase difference is between 87 deg and 101 deg from 250 to 290 GHz. |
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| ISSN: | 2169-3536 |