Welcome to KP Microwave Components KP Microwave is a leading manufacturer of State-of-the-Art, Quality RF/Microwave components. We design, develop and manufacture these components, in beautiful sunny San Diego, California. Our products include RF/Microwave Filters, Diplexers, High Power Pin Diode Switches, Frequency Multipliers, GPS LNA/Filter Assemblies and Multifunction Assemblies. We serve the Defense, Military, Commercial and Wireless Telecommunication