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Microstrip Hairpin filter



WaveCon offers a variety of synthesis programs for design of both coupled line filters and transmission line filters including programs for elliptic filters and cross-coupled filters. It also has an analysis program which can accept designs from the synthesis programs allowing for combing designed filters with other microstrip components as resistors, capacitors, amplifiers, etc.

 Parfil designs parallel-coupled, interdigital, combline, hairpin, and bandstop filters.  It also designs transmission line  filters for low-pass, high-pass, band-pass  and band-stop filters.  Parfil has been significantly upgraded including capability for design of flat group delay filters and for designs with an intervening opening between rods. It can design coupled coax line filters and high dielectric constant combline ceramic filters.  Almost all of these designs can be done for a variety of media including microstrip, stripline, rectangular bar, round rod, shielded microstrip, and suspended substrate.

Parfil has been sold to hundreds of companies worldwide and has been considered the most accurate design software available.  Companies who have purchased Parfil in the past, continue to purchase upgrade copies including major filter companies.

 Elliptic provides design capability for elliptic filter frequency response.  Elliptic includes design information for both cross-coupled and elliptic filters.  Adding rods or lines which couple to the first and last filter rods provides two additional zeros to achieve the desired elliptic filter response.  Folding a filter so that rods or lines couple between internal  rods is known as cross-coupling.  Due to phase cancellation an elliptic type response is achieved from this filter design approach.  At lower frequencies, capacitors can be used for the cross coupling.

ProCAP is a nodal analysis program especially developed for use with Parfil and Elliptic.  It has over 100 circuit elements which may be used in a circuit design.  Nodal circuit equivalents for many designs made in Parfil or Elliptic may be imported into ProCap. This permits adding other circuit elements such as circuit elements to form a diplexer between two filters designed by Parfil.   It also is useful for doing a sensitivity Monte Carlo analysis on a particular design.  The software for ProCAP is similar to Touchstone®.    Useful examples are given under the selection  ProCAP Design Examples. These include:


· ProCAP Low-Pass Cross Coupled Filter

· ProCAP Diplexer

· ProCAP Lange Couplers

· ProCAP Ceramic Tapped Combline Filter

· ProCAP Balanced Amplifier


  To contact us:


2076 Wythe Drive

Evans, GA 30809


Email: mail@waveconsoft.com

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