FilResearch Released QuickFilter 1.0

FilResearch has released QuickFilter 1.0, a synthesis and design software for most commonly used distributed filter types including both planar and cavity filters, in January 2011.

QuickFilter is an interactive filter design software to let RF engineer design a commonly used filter type in 15 minutes. Filter frequency response, dimension and layout can all be provided at the same time. Filters of lowpass, highpass, bandpass or bandstop without transmission zeros can be designed. Microstrip, Stripline, Coaxial and waveguide filters can be directly synthesized and designed. Figure below shows an example of a 4-pole microstrip hairpin filter. 

Discontinuities including open end, bend, impedance steps and T-junctions are included in the frequency response computation. Design optimization of the QuickFilter can quickly correct the dimensions of the designed filter. 

Following shows a list of filter topology QuickFilter can synthesis and design:

• Microstrip and Stripline Filters

• Step impedance lowpass filter

• End coupled bandpass filter

• Parallel coupled bandpass filter

• Hairpin bandpass filter

• Interdigital bandpass filter

• Combline bandpass filter

• λ/4 short stub bandpass filter

• λ/2 open stub bandpass filter

• λ/4 open stub bandstop filter

• Coupled line bandstop filter

• Distributed highpass filter

• Circular and Rectangular Rod Coaxial Filters

• Step impedance lowpass filter

• End coupled bandpass filter

• Interdigital bandpass filter

• Combline bandpass filter

• λ/4 short stub bandpass filter

• λ/2 open stub bandpass filter

• λ/4 open stub bandstop filter

• Coupled line bandstop filter

• Waveguide Filters

• Corrugated lowpass filter

• Inductive window bandpass filter

• Ridged waveguide bandpass filter