IEEE Microwave and Wireless Components Letters · 2002 · 62 citations · 9 references
EngineeringElectrical EngineeringCircuit TheoryMicroelectronicsMicrowave EngineeringImpedance MatchingMicrostrip CircuitsMicrowave AmplifiersMicrowave Integrated CircuitsMicrowave Transmission LinesTransmission LinesCoplanar Waveguide MatchingCoplanar WaveguidesDefected Ground StructuresEquivalent Circuit AnalysisEquivalent Circuit ModelingMicrostrip LinesMicrostrip Matching NetworksMicrostrip Transmission Lines
The microstrip and coplanar waveguide transmission lines combined by a vertically periodic defected ground structure (VPDGS) are proposed. The slow-wave effect, equivalent circuit, and the performances are shown. As an application example, VPDGS is adopted in the matching networks of an amplifier for size-reduction. Two series microstrip lines in input and output matching networks of the amplifier are reduced to 38.5% and 44.4% of the original lengths, respectively, due to the increased slow-wave effects, while the amplifier performances are preserved.
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Novel 2-D photonic bandgap structure for microstrip lines
V. Radisic, Y. Qian, R. Coccioli et al. · IEEE Microwave and Guided Wave Letters · 1998 · 660 citations