http://groups.yahoo.com/group/mtt-8/ Filters and Passive Components Mon, 23 Nov 2009 11:15:23 GMT fabseyfert http://groups.yahoo.com/group/mtt-8/message/1843 http://groups.yahoo.com/group/mtt-8/message/1843 Dear Colleagues, We have an open Post-doc/Engineer position at our lab on the topics of multiplexer synthesis. See following link for details: Wed, 11 Nov 2009 22:56:02 GMT Chris Radcliffe http://groups.yahoo.com/group/mtt-8/message/1842 http://groups.yahoo.com/group/mtt-8/message/1842 Hi Ming, This looks a very interesting programme. Thanks for putting it up on MTT8, I wasn't aware of it. I would like to come but its probably a bit short Tue, 10 Nov 2009 16:49:39 GMT Ming Yu http://groups.yahoo.com/group/mtt-8/message/1841 http://groups.yahoo.com/group/mtt-8/message/1841 (The workshop registration is free) Title: International Workshop on Microwave Filters Start date: 16 November 2009 End date: - 18 November 2009 Organizer: Thu, 05 Nov 2009 22:41:10 GMT wuchanglim http://groups.yahoo.com/group/mtt-8/message/1840 http://groups.yahoo.com/group/mtt-8/message/1840 Dear fellow coaxial friends Anyone knows where I can find the information regarding the followings equipment, reading the internet seems confusing at times, as Thu, 05 Nov 2009 22:40:07 GMT lotzhan@... http://groups.yahoo.com/group/mtt-8/message/1839 http://groups.yahoo.com/group/mtt-8/message/1839 Dear experts, Now I am puzzled with a filter problem. I want to design a varactor tunable bandpass filter which operates 100MHz-200MHz.The insert loss and Sun, 01 Nov 2009 17:49:31 GMT Ralph Levy http://groups.yahoo.com/group/mtt-8/message/1838 http://groups.yahoo.com/group/mtt-8/message/1838 Dear Yun, There are numerous papers on bandstop filters published in the IEEE Trans. on MTT. Try starting with the chapter on such filters in Matthaei, Young, Sun, 01 Nov 2009 14:00:43 GMT lycloud1978 http://groups.yahoo.com/group/mtt-8/message/1837 http://groups.yahoo.com/group/mtt-8/message/1837 Dear experts, Can anybody give some guidance to the design of narrow band notch filters(for example, the notch band is 2000+/-0.5MHz? I guess there need to Tue, 13 Oct 2009 23:13:52 GMT RJC_1947 http://groups.yahoo.com/group/mtt-8/message/1836 http://groups.yahoo.com/group/mtt-8/message/1836 The small differences that you are observing are probably due to rounding errors. When the TX zeros were optimized to give the required lobe levels, the Tue, 13 Oct 2009 13:06:12 GMT Dr. Marco Kunze http://groups.yahoo.com/group/mtt-8/message/1835 http://groups.yahoo.com/group/mtt-8/message/1835 Hi, I am wondering if someboby of you might recommend me reference (paper or book) about the fundamental definition of active scattering parameters for passive Sun, 11 Oct 2009 15:36:05 GMT ??? http://groups.yahoo.com/group/mtt-8/message/1834 http://groups.yahoo.com/group/mtt-8/message/1834 Thank you for your e-mail. Could you explain why there is small differece for P? At the page 312, at the table 8.3 The value of P j1.0 +2.2128 +j26.5826 Fri, 02 Oct 2009 22:05:17 GMT RJC_1947 http://groups.yahoo.com/group/mtt-8/message/1833 http://groups.yahoo.com/group/mtt-8/message/1833 There was a small error in the formula for epsilon in equation (8.38)on page 304 of the book 'Microwave Filters ...' :- F(s) should read F(s)/epsR This Thu, 01 Oct 2009 05:23:46 GMT 정학 http://groups.yahoo.com/group/mtt-8/message/1832 http://groups.yahoo.com/group/mtt-8/message/1832 Dear experts, I'm now studying for polynomial synthesis from the book Microwave filters for communication systems. At the page 312, in the table 8.3 I got Tue, 08 Sep 2009 10:19:50 GMT agileahn http://groups.yahoo.com/group/mtt-8/message/1831 http://groups.yahoo.com/group/mtt-8/message/1831 Dear sir, I tried to follow the paper, Novel Approch to the synthesis of microwave diplexers. I'v got same result for the Type 2 example case. But for the Fri, 14 Aug 2009 10:33:58 GMT jhgelb http://groups.yahoo.com/group/mtt-8/message/1830 http://groups.yahoo.com/group/mtt-8/message/1830 Is there commercial software available that can extract the coupling matrix from the s-parameter file derived from the HFSS filter model with lumped ports on Wed, 05 Aug 2009 00:07:04 GMT dieterpelz http://groups.yahoo.com/group/mtt-8/message/1829 http://groups.yahoo.com/group/mtt-8/message/1829 Recently I was asked to comment on a narrow bandpass filter for high power at low VHF frequencies. A brief analysis revealed that the insertion loss would be