ABSTRACT
Many lumped networks used in electronic fields have their microstrip technology counterparts, usually called distributed elements. For instance, inductors, capacitors, filters, and tranformers may be built with microstrips. It is very important to note that the greatest difference between a lumped network and its distributed counterpart is that a great number of the latter have the so-called “returns” while the former do not. The “returns” are frequency bands where the behavior of the network is quite similar to that obtained in the desired bandwidth. Consequently, caution must be used when employing a distributed network. In the course of the book we will show networks that posses returns.
