For microwave printed circuits, transmission lines can be laid out in a planar form, such as stripline or microstrip, with dimensions carefully controlled to ensure consistent impedance. In RF and fast switching circuits, the inductance and capacitance of the printed circuit board conductors become significant, de zi Camera usually unwanted, circuit elements; rather, they
to the substrate. Chemical etching divides the copper into separate conductive lines called tracks or circuit paths, pads for connections, metallized holes (vias) for passing connections between layers of copper as solid conductive areas Camera zi de for electromagnetic shielding or other purposes. Each of the conductive layers is
substrate. Flexible-Rigid printed circuits are boards that bring in a unique combination of superior Camera de zi technology a flexible printed circuit made of a thin polyamide of 0.1-0.3 mm with a rigid printed circuit on an FR4 substrate. These printed circuits are used more and more lately, having the advantage of their flexibility.