Variable voltage attenuator. Source: Fairview Microwave. Fairview Microwave Inc. has introduced a line of voltage variable attenuators (VVAs) that offer up to 60 dB of attenuation across a broad range of frequencies from 400 MHz to 18 GHz. These voltage variable attenuators are frequently used in applications such as electronic warfare, instrumentation, point-to-point and point-to-multipoint radios, fiber optic and broadband telecom, microwave radio and VSAT, military radios, radar, ECM, SATCOM and sensors and R&D.Fairview’s new PIN diode-based VVAs deliver accurate control and broadband flatness, allowing the output level to be continuously adjusted by changing analog voltage on the input control line. These VVAs are ideal for use with variable gain amplifiers, power level control, feed-forward amplifiers and automatic level control (ALC) circuits.
This product line is comprised of six models that support frequencies from 400 MHz to 18 GHz while providing low insertion loss and a wide dynamic range. These modules display exceptional VSWR over all attenuation levels and CW input power is rated up to +23 dBm. Rugged coaxial packaged assemblies are designed to meet MIL-STD-202 environmental test conditions that include humidity, shock and vibration.
