RF Cafe Homepage


withwave microwave devices - RF Cafe

PCB Directory (Manufacturers)

Please Support RF Cafe by purchasing my  ridiculously low-priced products, all of which I created.

RF Cascade Workbook for Excel

RF & Electronics Symbols for Visio

RF & Electronics Symbols for Office

RF & Electronics Stencils for Visio

RF Workbench

T-Shirts, Mugs, Cups, Ball Caps, Mouse Pads

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Espresso Engineering Workbook™

Smith Chart™ for Excel

KR Electronics (RF Filters) - RF Cafe

Worldwide Patent & Invention Resources

U.S. Patent Office Seal History - RF CafeI have posted a few article from vintage magazines regarding the patent process.

Here is a list of the major patent sites from all over the world. I have also included links to a few useful articles and patent process assistance companies (those deemed safe by technical reviewers).

KR Electronics (RF Filters) - RF Cafe
Rigol DHO1000 Oscilloscope - RF Cafe

Crane Aerospace Electronics Microwave Solutions

Copper Mountain Technologies (VNA) - RF Cafe