IEEE Transactions on Microwave Theory and Techniques · 1988 · 48 citations · 11 references
EngineeringElectrical EngineeringCircuit TheoryMicrowave EngineeringSemiconductor DevicesElectric CircuitsMicrostrip CircuitsMicrowave FiltersMicrowave Integrated CircuitsMicrowave ResonatorsResonant CircuitsMicrostrip FiltersMicrostrip ResonatorsMicrostrip Tunable CircuitsTransmission Line ModelingTransmission Line TheoryTunable CircuitsTunable FiltersVaractor Diodes
A microstrip ring resonator circuit loaded with two p-i-n diodes has been developed for use as a switchable filter. By replacing one p-i-n diode with a varactor diode, the switchable filter can be made electronically tunable. Isolation exceeding 20 dB with 9% tuning bandwidth was demonstrated. An analysis based on transmission line theory was used to model both circuits. The analysis includes the effects of diode parasitics, coupling gaps, dispersion, and mounting-gap capacitance. The experimental results agree very well with the theoretical calculation.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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Measurement techniques in microstrip
P. Troughton · Electronics Letters · 1969 · 172 citations
Engineering, Electrical Engineering, Materials Characterization +14