EngineeringElectrical EngineeringElectronic MaterialsMicroelectronicsMicrowave EngineeringDielectric MaterialsDielectricsMicrostrip CircuitsMicrowave Integrated CircuitsMicrowave Transmission LinesTransmission LinesDielectric EffectsMicrostrip Integrated CircuitsMicrostrip LinesMicrostrip Transmission LinesMicrowave SubstratesTransmission Line Theory
Current development of microwave integrated circuits has revived interest in microstrip transmission line as a means of interconnecting solid-state elements into signal-processing subsystem. This paper describes an alternative kind of transmission line on a dielectric substrate that may be used with or instead of microstrip. As shown in Fig. 1, this alternative consists of a narrow slot or gap in a conductive coating on one side of the substrate. The other side of the substrate is exposed directly to air.