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4 lut 2024 · Learn how bifilar coils can be used to build Gustav Guanella’s classic RF balun. Broadband transformers—including baluns—find many applications in RF circuits. The high-frequency limits of some power amplifiers, for example, are determined by the leakage inductance and distributed interwinding capacitance of magnetically-coupled transformers.
A Guanella balun is a transmission line device based on a design described by Gustav Guanella in a 1944 paper in Brown, Boveri & Company's internal journal Brown Boveri Review titled "New Method of Impedance Matching in Radio-Frequency Circuits". It can be found online here.
9 wrz 2022 · This blog post discussed what the Guanella component is, how it can be used as a balun, and how it can be used for impedance transformation, as well as how to design it at least to a reasonable high level, ready for testing or use.
The 1:1 Guanella-balun is the basic building block for other types of types of Guanella-baluns or ununs (a Guanella-unun is just a Guanella-balun with the grounds in different places; a similar statement for Ruthroff-ununs cannot be made).
14 lut 2024 · Guanella balun was invented by Gustav Guanella, a Swiss engineer as a “New method of impedance matching in radio-frequency circuits” in 1944. Balun stands for balanced line to unbalanced line. It is typically connected between a balanced antenna and an unbalanced feeder coaxial cable.
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