14-12-2018, 10:59 AM
Igor
Difficult to alter lead length on SMD components and on a PCB that is just 40mm x 12mm overall - but your point is taken.
I plan to try a few different BPF arrangements and see which will provide the best response but my manual method is my best available option versus having a tracking generator. If I am honest about it, I realistically only have to attenuate the harmonics and noise to -43dBc so even an inferior filter would be usable in practice.
The broadband noise while it transmits is probably the thing I want to 'cure' the most by adding better BPF arrangements. If I can limit what noise goes out to the antenna (ie by filtering), the less this side-effect will affect other bands.
Thanks
Doug
Difficult to alter lead length on SMD components and on a PCB that is just 40mm x 12mm overall - but your point is taken.
I plan to try a few different BPF arrangements and see which will provide the best response but my manual method is my best available option versus having a tracking generator. If I am honest about it, I realistically only have to attenuate the harmonics and noise to -43dBc so even an inferior filter would be usable in practice.
The broadband noise while it transmits is probably the thing I want to 'cure' the most by adding better BPF arrangements. If I can limit what noise goes out to the antenna (ie by filtering), the less this side-effect will affect other bands.
Thanks
Doug
Doug VK4ADC @ QG62LG51
http://www.vk4adc.com
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If you have a comment or question, post it as it may trigger or answer the query in someone else's mind.
http://www.vk4adc.com
This Forum is only going to be as interesting as the posts it contains.
If you have a comment or question, post it as it may trigger or answer the query in someone else's mind.