http://groups.yahoo.com/group/mtt-8/ Filters and Passive Components Fri, 08 Mar 2013 10:24:22 GMT christoph.ernst@... http://groups.yahoo.com/group/mtt-8/message/1994 http://groups.yahoo.com/group/mtt-8/message/1994 Dear Santhosh, for TWTAs there is typcially some type of coaxial to wg transition. Hence depending on this transition and waveguide dimensions, higher order Mon, 18 Feb 2013 16:31:06 GMT santhosh http://groups.yahoo.com/group/mtt-8/message/1993 http://groups.yahoo.com/group/mtt-8/message/1993 Dear Experts, Could you please explain me whether the harmonics generated by a TWTA are launched in its output waveguide in TE10 mode or higher order modes. Sat, 02 Feb 2013 16:11:22 GMT cool guy http://groups.yahoo.com/group/mtt-8/message/1992 http://groups.yahoo.com/group/mtt-8/message/1992 Dear all   please could anyone help me regarding of my LTCC simulation , I have designed single mode filter on FR4 , I have cascaded two cells of that Fri, 01 Feb 2013 17:31:11 GMT Dr. Richard V. Snyder http://groups.yahoo.com/group/mtt-8/message/1991 http://groups.yahoo.com/group/mtt-8/message/1991 ... -- Richard V. Snyder,PhD President RS Microwave rsnyder@... Fri, 01 Feb 2013 17:29:25 GMT santhosh http://groups.yahoo.com/group/mtt-8/message/1990 http://groups.yahoo.com/group/mtt-8/message/1990 Dear Experts, Could you please guide me in working on the future filter technologies for satellite applications, 10 years down the line. Also can you throw Tue, 16 Oct 2012 00:34:12 GMT Iman http://groups.yahoo.com/group/mtt-8/message/1989 http://groups.yahoo.com/group/mtt-8/message/1989 Dear Prof. Macchiarella, Thank you very much for pointing out my mistake. The one you showed in the figure was the case I was considering. After reading some Sun, 14 Oct 2012 08:37:58 GMT Politecnico http://groups.yahoo.com/group/mtt-8/message/1988 http://groups.yahoo.com/group/mtt-8/message/1988 There is a mistake in the formula you derived for Zc. Moreover it is not clear what you say about Beq. In fact the situation you are considering is the Sat, 13 Oct 2012 11:39:09 GMT Iman http://groups.yahoo.com/group/mtt-8/message/1987 http://groups.yahoo.com/group/mtt-8/message/1987 Dear Prof. Macchiarella, Thanks for the equations. Following the equations you gave, an in-line resonator adjacent to a NRN, if represented by quarter Fri, 12 Oct 2012 16:37:53 GMT macchiarella http://groups.yahoo.com/group/mtt-8/message/1986 http://groups.yahoo.com/group/mtt-8/message/1986 Sorry, in the equations reported in the last mail there is a mistake. In fact Xstub=-Zris/tan(bL). Xeq is however correct. ... Giuseppe Macchiarella Fri, 12 Oct 2012 16:16:58 GMT macchiarella http://groups.yahoo.com/group/mtt-8/message/1985 http://groups.yahoo.com/group/mtt-8/message/1985 Dear Iman, some further clarifications about the equations in section IV of the paper. The coupling coefficient kzi,i+1 refers to the coupling between a shunt Fri, 12 Oct 2012 10:18:26 GMT macchiarella http://groups.yahoo.com/group/mtt-8/message/1984 http://groups.yahoo.com/group/mtt-8/message/1984 Dear Iman, eqs. 4 in the mentioned paper are derived and explained in ref. [5]: G. Macchiarella, “Generalized Coupling Coefficient for Filters with Fri, 12 Oct 2012 10:08:06 GMT iman_iit http://groups.yahoo.com/group/mtt-8/message/1983 http://groups.yahoo.com/group/mtt-8/message/1983 Dear Experts, I am new to implementation of microwave filters with Microstrip Lines. In the paper by Prof. Macchiarella "Synthesis of Microwave Duplexers using Tue, 09 Oct 2012 14:34:52 GMT Junghak Ahn http://groups.yahoo.com/group/mtt-8/message/1982 http://groups.yahoo.com/group/mtt-8/message/1982 Dear Professor Giuseppe Macchiarella I really appreciate for all your comment. Not, it's clear! BR Junghak Ahn ... -- Junghak Ahn Research on Computer Aided Tue, 09 Oct 2012 13:36:45 GMT macchiarella http://groups.yahoo.com/group/mtt-8/message/1981 http://groups.yahoo.com/group/mtt-8/message/1981 Yes it is correct. Polynomial F22 is actually given by (-1)^N*paraconj(F) independently on the number of transmission zeros. Remember to take the paraconiugate Tue, 09 Oct 2012 13:05:25 GMT Junghak Ahn http://groups.yahoo.com/group/mtt-8/message/1980 http://groups.yahoo.com/group/mtt-8/message/1980 Dear Professor **Giuseppe Macchiarella**,**** ** ** I appreciate for your comment.**** In the course of trying to search wrong point of my code, I found