| Autor: |
Karumudi Rambabu, Adrian Eng-Choon Tan, Kevin Khee-Meng Chan |
| Rok vydání: |
2013 |
| Předmět: |
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| Zdroj: |
IET Microwaves, Antennas & Propagation. 7:71-77 |
| ISSN: |
1751-8733 |
| DOI: |
10.1049/iet-map.2012.0467 |
| Popis: |
The design and analysis of a decade bandwidth 3 dB 180° hybrid coupler using tandem connection of two similar wideband 8.34 dB hybrids is presented. The designed coupler has return loss better than 12 dB over a decade bandwidth, insertion loss below 6 dB, amplitude balance within ± 1 dB, phase balance of ± 20° and isolation above 18 dB. Gap and overlap ground patterns at the junction of the tightly coupled to uncoupled region are introduced to improve isolation by preventing odd-mode field coupling and preserving equal even- and odd-mode phase velocities across the junction. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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