Buy Products In Stock with Same Day Shipping at a Great Value Quantum Microwave is a manufacturer of Cryogenic Microwave Components and Millimeter-wave Components. We are also the America's Sales for Low Noise Factory. We focus on delivering the best performance components. Products include the Industries lowest Noise LNA's from 200 MHz to 115 GHz. Mixers from 18 to 110 GHz. Power Amplifiers from 18 to 110 GHz. Active Multipliers for 18 to 110 GHz. Filters for 28 to 96 GHz. Cryogenic Attenuators, Diplexers, Bias Tee's, Directional Couplers, and Image Reject Mixers. Components are designed for the best electrical and thermal performance.