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- Title
A compact directional coupler with high directivity using ferrite cores.
- Authors
Liu, Song‐Lin; Liu, Lei
- Abstract
In this paper, a wideband directional coupler is proposed for high‐power applications, which is composed of a transformer and lumped elements. The introduction of the transformer greatly improves the directivity of the coupler. The measurement results demonstrate that the proposed design has an excellent return loss (>17 dB), small insertion loss (<0.4 dB), and high directivity (>22) over a wide frequency band (10–350 MHz). Meanwhile, it can achieve a flat coupling level of 32 dB with the imbalance less than 0.5 dB.
- Subjects
DIRECTIONAL couplers; FERRITES; LUMPED elements; INSERTION loss (Telecommunication)
- Publication
Electronics Letters (Wiley-Blackwell), 2023, Vol 59, Issue 12, p1
- ISSN
0013-5194
- Publication type
Article
- DOI
10.1049/ell2.12849