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Filters and Stubs

Coupled line, hairpin, and stepped-impedance low pass filters; radial stubs

Use the filter and stub objects and functions to create and visualize filters and stubs used in a printed circuit board (PCB).

RF and microwave filters are used to select or reject a particular band of frequencies in receivers, transmitters, and frequency synthesizers.

Radial stubs are used in antenna impedance matching circuits, frequency selective filters, and resonant circuits for UHF electronic oscillators and RF amplifiers.

Objects

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filterCoupledLineCreate coupled line filter in microstrip form
filterHairpinCreate hairpin filter in microstrip form
filterStepImpedanceLowPassCreate stepped impedance lowpass filter in microstrip form
filterComblineCreate combline filter in microstrip form
filterStubCreate stub filter in microstrip form
stubRadialShuntCreate single- and double-radial stub shunt on X-Y plane

Functions

showDisplay PCB component structure or PCB shape
infoDisplay information about PCB component structure
pcbcascadeCreate new component using cascade operation
shapesExtract all metal layer shapes of PCB component