Optimim design for a broadband microstrip balun
- 18 August 1977
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 13 (17) , 510-511
- https://doi.org/10.1049/el:19770371
Abstract
The letter reports calculations of Marchand balun performance which show that bandwidths approaching 50:1 (for a V.S.W.I.≤2:1) should be achievable with overlaid microstrip structures. The bandwidth limits (≲8:1) reported by previous writers appear to reflect only the inaccessibility of the true optimum to the semiempirical design methods used and the limitations of fabrication on single-thickness card. Preliminary experimental results confirm the theoretical indications.Keywords
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