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Engineers at National Securities Technologies (NSTec) have developed a new impedence matching circuit element of simple design and construction which can be used in place of Baluns, ununs, and Blumleins. Impedance matching is important to prevent signal reflections, which at high frequencies and/or fast rise times can produce false logic and data signals. Typically, this is done with some combination of inductors and capacitors in a parallel circuit transformer type arrangement. One drawback of the current technology is that to achieve high impedance ratios, the number of lines connected in parallel grows, contributing to the complexity of the device, its connections, as well as its size. Other drawbacks include high losses and low efficiency; narrow bandwidth; limited impedance ratio, scalability and modularity; inflexibility to mixing different types of transmission lines; and unsuitability for miniturization. The Series Transmission Line Transformer (STLT) solves the problem by having input and output connections with a desired impedance relationship, voltage and bandwidth. As an added benefit, the number of connections can be reduced and thus reduce parasitic losses. The STLT concept is patent 6,756,874 with the U.S. Patent and Trademark Office and is available for license from NSTec.

Series Transmission Line Transformer

Technology Brief

Discrete or integrated circuit element Wide range of impedance ratios Additional Information is available from: Intellectual Property Services NSTec P.O. Box 98521 MS NSF038 Las Vegas, NV 89193-8521 Phone: 702-295-0256 Fax: 702-295-2633 E-mail: [email protected]

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