I dont want a 0.1dB ripple.I maybe want a bigger or smaller ripple .Also i need it for a 7 or 8 order filter.
or page 4 of this:
Looking how to get the admittance values for such a filter as from the book.I'm not sure if you want to learn the theory, or the math, use tables, simulate the LC values or just realize an optimal filter to meet specs. **
Normally I choose the passband and stopband parameters for attenuation and group delay then decide how to achieve it.
Chebychev filters are "ideal" for max slope vs ripple but suffer from large group delay swings in the passband which are not ideal. But when ripple is reduced to 0 dB you end up with a Butterworth.
Let me assume the last option. **
Here I simulated an 8th 1GHz HPF at 0.1 dB ripple then adjusted to 0.2 dB. The attenuation improvement at 1 octave down is only -2 dB to -76.6 dB at fo/2.
The microstrip might be computed for a given substrate from the LC values.
View attachment 194394
my simulation link.
View attachment 194396
It has a diffrent filtering function to a chebyschev filter,so the admittance values are diffrent.Textbook quoted in post #1 explains how to calculate equal ripple (Chebychev) filter parameters for any order and ripple specification. High-pass transformation has to be applied to synthesize high-pass.
It has a diffrent filtering function to a chebyschev filter,so the admittance values are diffrent.Textbook quoted in post #1 explains how to calculate equal ripple (Chebychev) filter parameters for any order and ripple specification. High-pass transformation has to be applied to synthesize high-pass.
The only information you have been yet given is the reference to Optimum Distributed Highpass Filter Design book. The respective example on page 165f is Chebychev high pass, the design is based on Chebychev polynominals. But as stated above, we are missing your specification.It has a diffrent filtering function to a chebyschev filter,so the admittance values are diffrent.
From theYouTube video he explains some of the equations and how to interpolate, but not how to expand to an eighth order. You will notice that the symmetry excludes odd order filters
He also has a new book which you may need to purchase. https://www.google.com/search?q=optimal distributed generation allocation and sizing &ie=utf-8&oe=utf-8&client=fire
I need it for any order ,so higher order and mostly any ripple and Fc,so actually asking how to synthesis itWhat specs? If none keep keeping till you have some.
The link you gave goes nowhereFrom theYouTube video he explains some of the equations and how to interpolate, but not how to expand to an eighth order. You will notice that the symmetry excludes odd order filters
He also has a new book which you may need to purchase. https://www.google.com/search?q=optimal distributed generation allocation and sizing &ie=utf-8&oe=utf-8&client=firefox-b-m
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