Alt, Alexander  ORCID: https://orcid.org/0000-0002-7621-4940, Schwerg, Nikolai, Wangler, Christian and Gruner, Daniel
2017.
Concept for the implementation of very high directivity and decade bandwidth in compact microstrip directional couplers.
Presented at: 2016 46th European Microwave Conference (EuMC),
London, UK,
3-7 October 2017.
2016 46th European Microwave Conference (EuMC).
IEEE,
pp. 210-213.
10.1109/EuMC.2016.7824315
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Abstract
A concept to induce a very high directivity and a flat coupling over a large bandwidth in compact microstrip directional couplers is presented. By introducing lumped element based compensation networks at the isolated and coupled port of a simple electrically short directional coupler, a very high directivity and a constant coupling over enormous bandwidths up to one decade can be achieved. With a design focusing on flat coupling, a high power directional coupler with a coupling length of only 50 mm, less then λ/25 at the middle of the band, was shown to have a coupling in the range of 52.11 dB ± 0.05 dB from 37.4 MHz to 200 MHz. In a further design step with focus on directivity and coupling flatness at the same, the coupling stayed within 55.25 dB ± 0.35 dB from 22 MHz to 164 MHz with a directivity of greater than 50 dB (30 dB) from 35 MHz to 84 MHz (20 MHz to 187 MHz).
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Engineering |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Publisher: | IEEE |
| ISBN: | 978-2-87487-043-9 |
| Date of First Compliant Deposit: | 31 July 2017 |
| Last Modified: | 05 Jan 2024 08:27 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/103119 |
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