The use of uniplanar technology to reduce microwave circuit size

This article addresses some of the unique advantages that uniplanar technol ogy can offer the microwave circuit designer. In contrast to the convention al microstrip approach, uniplanar techniques allow a mixture of transmissio n line configurations to be used together, thereby making available a wide range of novel passive microwave structures. Specific examples of the use o f series and shunt elements in coplanar waveguide (CPW) are discussed and t he design of a reduced size Wilkinson divider is presented.