microstrip hairpin bandpass filter

i want to design a hairpin microstrip bandpass filter for bluetooh application (center freq 2.45GHz) on the roger 4003c subtrate.But ii dont have any idea how to start the design.Anybody could please help me on the equation for the filter dimension.What is the best specification for a hairpin microstrip bandpass filter?i.e ripple & stuff like that....

Hi,

Go through this paper
A 2.6 GHz Microstrip Hairpin Filter
Design Using CAD and EDA Tools

If you download Sonnet Lite ( it is free), look at the example they have.
You could be able to modify it for your purposes.

i've downloaded the latest sonnet version but i have some difficulties on registering them....

What difficulty you are facing?...


Any way they have similar forum, you can post your problem...

http://www.sonnetlist.com/phpBB2/

HairPin-Line and Hybrid HairF)in-Line/ Half-Wave Parallel-Coupled-Line Filters

EDWARD G. CRISTAL AND SIDNEY FRANKEL

MTT