RF filters are really just a handful of strategically placed inductors and capacitors. Yes, you can make a 1 GHz filter out of through-hole components, but the leads on the parts turn into inductors ...
Using low-cost PCBs (printed-circuitboards), you can easily designa board in a few hours with nearlyany CAD package, even the free ones.You can have your prototype board onyour desk in just two days.
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