QuinStar Technology’s series QVA coaxial variable PIN attenuators cover the frequency range from DC to 50 GHz. They offer a low insertion loss and a large attenuation range, typically up to 40 dB. These attenuators are housed in a compact package with 2.9 mm or 2.4 mm coaxial connector interfaces. The control voltage required for varying the attenuation is from 0 to –5 volts. Series QVA attenuators are well suited for signal level control, amplitude modulation and test and measurement applications.