Embedded Resistor PCB: Thin-Film Resistive Foil for Millimetre-Wave Boards At millimetre-wave frequencies, the humble chip resistor runs out of road. Not because its resistance drifts — because its pads, solder joints and return path become significant fractions of a wavelength,…
Cryogenic RF PCB: Contraction, Heat Load and 4 K Signal Integrity Cryogenic RF used to be a laboratory one-off: a physicist, a copper plate, and a board that had been made by whoever would answer the phone. That is changing.…
Corporate Feed Network PCB: Series vs Parallel Feed, Quarter-Wave Transformers and Loss Budget A corporate feed network is the branch-and-junction structure that splits RF power from one port to the elements of a planar antenna array — or combines their…
PCB Material Comparison Chart: Rogers vs PTFE vs Taconic vs F4B A PCB material comparison chart puts the electrical, thermal and mechanical parameters of laminate grades side by side so that the same parameter can be read across several materials…
Antenna Module PCB Assembly: RO4350B/PTFE Substrates, Lamination and QC Antenna module PCB assembly is the process chain that turns a bare high-frequency laminate panel into a finished, tested radiating module: substrate selection and material verification, lamination of the antenna panel…
FR4 + Rogers Hybrid PCB: When to Use, Stackup Options and Cost Trade-offs An FR4 + Rogers hybrid PCB is a multilayer board that places high-frequency laminate only in the layers that carry RF signals, while FR-4 forms the power,…
