Design, Measurement and Application of Lumped Elements up to J-Band

Lumped-element design, fabrication and characterization has been extended for MIC requirements up to l8GHz. Spiral or loop inductors and overlay or interdigital capacitors have been measured at appropriate frequencies leading to satisfactory equivalent circuits. Variations in parasitic reactances and Q-factor with frequency, substrate dielectric constant and component geometry are presented. Particular applications include filter networks and FET amplifier matching circuits, the latter enabling octave coverage amplifier modules over X and J-band frequencies to be realised.