If you post your question to the MTT-8 filters news group you might get a response. mtt-8@xxxxxxxxxxxxxxx Dan Dan Swanson EMAIL: d.swanson@xxxxxxxx Forem USA PHONE: 978-834-4085 37 South Hunt Road FAX: 978-388-7077 Amesbury, MA 01913 > -----Original Message----- > From: Wei Zhang [mailto:wezhang@xxxxxxxxxxxxxxx] > Sent: Tuesday, March 25, 2003 3:46 PM > To: si-list@xxxxxxxxxxxxx; circuits@xxxxxxxxxxxxx > Subject: [SI-LIST] ask for comments on high frequency filter design > > > > > > Hi, > > I need some professional comments on filter design, does > anyone tell me > what is the major method applied to design a high frequency > filter, say > center f between 1GHz and 10 GHz. As I read Reinhold Ludwig's > "Rf circuit > design", he explains the methodolgy of filter design as > receipe-cooking, > all kinds of filters can be implemented based on basic lowpass filter, > such as Butterworth, Chebyshev filter, with frequency and L/C > transformation. Furthermore, we can use unit elements and Kuroda's > identities to implement RF filter design. Is this a real > practical method > in RF circuit design? If not, which one do you use? Can you > give me some > detail information? > > Thanks for your help! > > wei zhang > > > ------------------------------------------------------------------ > To unsubscribe from si-list: > si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field > > or to administer your membership from a web page, go to: > //www.freelists.org/webpage/si-list > > For help: > si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field > > List archives are viewable at: > //www.freelists.org/archives/si-list > or at our remote archives: > http://groups.yahoo.com/group/si-list/messages > Old (prior to June 6, 2001) list archives are viewable at: > http://www.qsl.net/wb6tpu > > ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu