Hairpin RF filters - Generator and measurements

Electronic filters are circuits which remove unwanted frequency components from the signal to enhance wanted ones. The hairpin topology is a microstrip band-pass filter for the gigahertz band (UHF). They can be very useful with SDR to improve the reception. This video features a Javascript generator for these. It also shows their design and my results.
Original article: charleslabs.fr/...
CC-BY Charles Grassin
Made with open-source software: Kdenlive, Audacity, Inkscape on Ubuntu.

[@rjrodrig]

I recommend you remove the soldermask as it introduces shifts due parasitics. Thank you for the video. cool info

This is some high-level RF design. I love the EMI scanner.

[@CharlesGrassin]

Thank you!

[@foosabraun2461]

Excellent!

[@CharlesGrassin]

Thank you!

[@Jptoutant]

Tres heureux de decouvrir votre channel, extremement interessant

[@maelydaviles1704]

Thank you for this video 👌

[@donaldviszneki8251]

Why use a gaussian excitation function? Do i understand correctly that the excitation waveform is a repeated bell curve?
Please forgive me I am a noob.

[@dabdoube92]

Salut !

[@ser7ser7i]

Awesome explanation, thank you.

[@CharlesGrassin]

Thanks !

[@sourabh8694]

what is the EM radiation's acceptable range for your? At what distance from filter, have you measured the EM radiation? In your video, filter seems to radiate +9dBm power which is very high. Which topology is suggested to minimize EM radiation?

[@mpm990]

1050 Mhz c'est pour l’écoute radio-astronomie ? , bravo beau travail . l'avez vous testé avec un NanoVNA ?

[@CharlesGrassin]

Exact! Non, je ne possède pas de NanoVNA, uniquement testé avec mon SNA maison, présenté ici : github.com/CGrassin/rf_network_analyzer

[@MrDwadi84]

Hi, Is there a way to use your script to generate filters for 2m & 70 cm band?

[@the_bootloader]

At those frequencies, the filter would be too big to be practical. You should use discrete components instead.