PARFIL DESIGNS:

Twenty different coupled and transmission line RF/microwave filter types. All of the parameters needed for filter construction are computed. The program accounts for "T", cross, via and step junction effects. It also accounts for unequal phase velocities in coupled microstrip designs. Data is supplied in tabular and graphical form for either English or Metric units. The filter types are:

BAND-PASS COUPLED LINE FILTERS:

Half wave - parallel coupled three coupling types

Interdigital - three types of input/output coupling

Combline - two types of input output coupling

Hairpin - two types of input/output coupling

BAND-PASS TRANSMISSION LINE FILTERS:

End coupled half wave

Quarter wave shunt stub

Stepped Impedance

LOW-PASS TRANSMISSION LINE FILTERS:

Shunt stub series line

Shunt stub series line - Elliptic Response

Stepped Impedance