How to make RF prototypes with foil, Al –
If you like to build RF circuits, you know that you can’t usually use those white prototype boards (you know, the kind you shove wires into). These boards have enormous capacitance and other undesirable characteristics. They are OK for simple circuits, but RF circuits need something better. PC boards are great (wide, thin conductors are good for RF). But who wants to cut a PC board just to try something out. Also, this discourages experimentation since you have to do a lot of work to change a PCB. Here’s an easy way to build simple RF prototypes.
HOW TO – RF prototypes with foil – Link.