EMC Power Amplifiers & Pre-Amplifiers
There are two main RF Amplifier types used for EMC Testing - Preamplifiers and Power Amplifiers.
EMC preamplifiers are used to improve measurement system sensitivity during EMC compliance testing. The addition of a high-gain, low-noise RF preamplifier can significantly improve the system sensitivity allowing measurement of signals that were previously ‘hidden’ in the noise. This can be especially useful in systems where the noise is close to the radiated emission limits.
EMC Power Amplifiers are used to generate Electromagnetic Fields that are used in Immunity EMC Testing. A Typical Immunity test setup consists of a Siganl Source, Power Amplifier and E-Field Generator. The E-Field Generator converts the output signal from the amplifier to an Electromagnetic Field which is used to test the immunity of various electronic devices. The RF frequency is matched with the desired IEEE frequency standards.
A power amplifier for EMC immunity testing must be able to deliver high levels of power across the frequency band of interest, with low total harmonic distortion. The amplifiers must be mismatch tolerant. This is because, in EMC applications, especially at lower frequencies, transducers/E-Field Generators can be a very poor match to 50 Ohms. Field reflections or standing waves can cause significant reflected power as well. During test, it is important to continue to deliver forward power as well as protect the amplifier from reflected power damage.
everything RF has listed pre-amplifiers and power amplifiers that can be used for EMC testing from the leading manufacturers. The list of EMC amplifiers can be narrowed down by frequency, gain, noise figure and other parameters. View product specifications, download datasheets, and request quotes for EMC amplifiers that meet your requirement.
