Designed specifically for EMC testing, the CBA1G-250 mismatch tolerant Class A amplifier is able to produce a test field of 10 V/m in GTEM cells up to 1 metre in height and can also produce more than a 10 V test level when used in conjunction with a CDN. This amplifier is ideal for a small test facility as it conveniently covers both the conducted and radiated bands of the IEC61000-4 standard.
The GaAs Class A design ensures a high reliability, low distortion linear performance across the frequency range. This design also ensures that the amplifier will continue to operate at full power even when presented with an open or short circuit at its output. The use of gallium arsenide technology represents a breakthrough in amplifier design for this frequency range and output power. Previous designs based on silicon technology suffer from relatively poor compression characteristics, low efficiency and sometimes poor reliability.
The unit is powered from a switched mode power supply for high efficiency, high power factor and wide voltage range operation. The unit is air-cooled with integral fans, and is protected against faulty cooling by excess temperature sensing. A safety interlock connector is provided, which the user can short circuit to ground, to put the amplifier into standby mode. Front panel indicators are provided to indicate over-temperature and RF interlock operation.
