### (@sgrassi)

Ph.D in 1997 from University of Neuchâtel, in the field of Electronics and Signal processing, M.Sc in 1990 from IC, London, in "Communications and Signal Processing", Electronics Engineer degree in 1988 from USB, Caracas. 1988 -1990 hardware engineer at Microtel Electronica S.A. 1992 to 2008, Scientist at the laboratory of Electronics and Signal Processing of IMT-University of Neuchâtel. 2009 - scientist and Team Leader at the laboratory of Electronics and Signal Processing of IMT-EPFL, working in algorithm development and implementation for portable devices, particularly physical activity, speech and image processing.

## Re: Polyphase Filter Bank channelizer issue

Hello, I have worked on a PFB (Polyphase Filter Bank) channelizer ~6 months ago. I read the XAPP1161 and used the accompanying matlab code, but not the FPGA implementation,...

## Re: Why complex numbers are used/introduced in electricity

Hello all, - Your comments helped me a lot in preparing the presentation, and I succeed in the interview! Now I have yet a final interview in which I have to...

## Re: Why complex numbers are used/introduced in electricity

Hello Ced, thanks a lot. I am still working in my presentation. Thanks for the links. And I will definitely use your proclamation as I fully agree with it. Best...

## Re: Why complex numbers are used/introduced in electricity

Hello, your drawing is incredibly simple and extremely beautiful. I am using a similar one to illustrate Euler's Formula, but now I have added the point -1, to...

## Re: Why complex numbers are used/introduced in electricity

Yes I did thumb up, and answered, every comment because it is valauble to me and useful for my task. Each person contributed with his view on the topic.

## Re: Why complex numbers are used/introduced in electricity

Hello all. Thanks a lot for your valuable comments and good wishes. They will help me a lot in preparing my talk. Have a nice day,Sara

## Re: Why complex numbers are used/introduced in electricity

Nice proof. Thanks a lot for this one as well. Best regards. Sara

## Re: Why complex numbers are used/introduced in electricity

Hello John, thanks for your input. Best regards, Sara

## Re: Why complex numbers are used/introduced in electricity

Hello Alan, thanks for your input. I will add it to my presentation, either at the introduction, the conclusion or both. Best regards. Sara

## Re: Why complex numbers are used/introduced in electricity

Hello, thanks a lot. I will add it to my talk, when I give an example of electrical circuit, to show that with complex numbers we can simplify the calculation (algebraic...

## Re: Why complex numbers are used/introduced in electricity

Hello and thanks, it looks good, I will definitely go through it.Best regards, Sara

## Re: Why complex numbers are used/introduced in electricity

And thanks also for this part. I will also use it in my talk, When I give the example of an eléectric circuit to show that is easy to do the calculation with complex...

## Re: Why complex numbers are used/introduced in electricity

I will, thanks a lot. Regards. Sara

...

## Re: Why complex numbers are used/introduced in electricity

Good point. I will for sure speak of Euler and his identity (Swiss mathematician, being in Switzerland is a must :-) In the first 2 min when I introduce complex...

## Re: Why complex numbers are used/introduced in electricity

Hello Shahram. Very nice explanation. Will use part of it in the first 2 min. Thanks an regards,Sara

## Re: Why complex numbers are used/introduced in electricity

Hello Richard, thanks a lot for these valuable words. I sure will integrate them into my talk (sketch above). I also wanted to mention (maybe when I speak about...

## Re: Why complex numbers are used/introduced in electricity

I thought about, especially that in my last project was the software-defined-radio where I/Q data is very useful. But finally I decided to do something simpler...

## Re: Why complex numbers are used/introduced in electricity

Hello Mike and all, thanks very much for your answers. Here is a (ongoing) sketch of what I want to say. Please tell me if it sound reasonable and if you would...

## Re: Covid-19 Stories

Hello all, I hope you are doing well. I am in Switzerland (French part, Neuchâtel). Me and my family and friends are all doing well so far. They have closed all...

## Why complex numbers are used/introduced in electricity

Hello I hope you are all doing well, in these difficult times. I would like to ask for your help as I have to prepare (for a job interview):a 10 min excerpt from...

## Re: create FIR filter from s-domain equation using Matlab firpm or other method

The bi-linear transform maps (compress, warps) the whole frequency range of your s-domain function, 0 to inf, to the available frequency range in the z-domain, 0...

## Re: create FIR filter from s-domain equation using Matlab firpm or other method

The link posted by JOS give a good comparison. I would mainly choose FIR if I want a linear phase, but seems not to be your case, as you want the same phase as...

## Re: create FIR filter from s-domain equation using Matlab firpm or other method

Hello, there are different ways to transform an analog filter (s domain equation) to a digital filter. They correspond to different ways to map the s-plane into...

## Re: Newbie with questions about decimation for SDR

To obtain the filter coefficients without effort, I would use the resample function of Matlab or octave. You specify the resampling factor (p/q) and give the input...

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