Tightly Coupled Directional Coupler Using Slotted-Microstrip Line
| Autor: | Abdelhamid M. H. Nasr, Amr M. E. Safwat |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Physics
Coupling Radiation business.industry 020208 electrical & electronic engineering 020206 networking & telecommunications 02 engineering and technology Condensed Matter Physics Directivity Microstrip Optics Line (geometry) 0202 electrical engineering electronic engineering information engineering Return loss Equivalent circuit Power dividers and directional couplers Electrical and Electronic Engineering business Coupling coefficient of resonators |
| Zdroj: | IEEE Transactions on Microwave Theory and Techniques. 66:4462-4470 |
| ISSN: | 1557-9670 0018-9480 |
| DOI: | 10.1109/tmtt.2018.2847696 |
| Popis: | This paper presents the theory and implementation of a novel microstrip directional coupler (DC) with a high coupling coefficient that can achieve the value of 0 dB. The coupling region is a slotted-microstrip line that supports two modes, even and odd. The geometry of the slotted-microstrip line facilitates the phase velocity compensation, which improves the isolation and directivity. A 3-dB coupler is fabricated and characterized. Measurements and electromagnetic simulations are in a good agreement with the theoretical predictions. They show that the proposed DC has 52% ±1 dB coupling coefficient fractional bandwidth centered around 2.4 GHz with isolation and return loss better than 25 dB. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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