A double-ground-plane strip-line system for microwaves

The double-ground-plane strip line consists of two parallel conducting planes with a conducting strip imbedded in a homogenous dielectric between them. Transmission characteristics for this system are calculated, and design formulae are given. Practical viewpoints on the design and application of strip lines are discussed. The system can be used as an inexpensive base for microwave circuits and is well adapted both to laboratory experiments and mass production.