RF preamplifiers are used during electromagnetic compatibility (EMC) testing to weaken the effects of RF interference and noise by amplifying weak electric signals captured by antennas. While testing for electromagnetic interference (EMI), a preamplifier should be placed as close as possible to the antenna to reduce feed line losses. Active antenna positioning is typically used in microwave systems due to coaxial cables experiencing high loss at microwave frequencies.
RF switches are used to complete RF switch and control tasks. They allow for seamless switching between signal paths.
RF directional couplers are placed between an RF amplifier and antenna or probe to allow for an RF power sensor to monitor the amount of power throughput. The power sensor is also able to establish if the measurements are accurate from the monitor or sensing probe and spectrum analyzer. This makes RF directional couplers an essential tool in radiated immunity test systems.
Avalon Test Equipment carries a variety of RF preamplifiers, switches, and directional couplers from top manufacturers (Keysight, Com-Power, and more) to meet your testing requirements. Rent or purchase from Avalon and Test With Confidence®.
The Teseq LNA 6000 is a low noise amplifier with 12.5 dB of gain covering the nominal frequency range 1 MHz to 3 GHz and can be used in the range from 200 kHz to 4 GHz. With its high gain and low noise figure, it will significantly increase the sensitivity of virtually all spectrum analyzers and other RF measuring instruments.
The ITS 6006 consist of an integrated RF signal generator, RF switch and EUT monitoring interfaces. The unit is designed for various radiated EMC applications in the 80 MHz to 6 GHz frequency range. In addition to the generator, the system includes the AM and PM modulators necessary for EMC testing. The second generation, called ITS 6006B, includes 3 freely configurable pulse modulators (1 µs to 200 s) for radar pulse profiles as required e.g. by Ford FMC1278 or VW TL81000. The RF signal can be switched to one of four outputs, where up to four power amplifiers can be connected directly. Two RF switches are supplied for combining four amplifier into two antenna paths.