Teseq’s New Power Amplifier Delivers Reliability and Consistency

Teseq Inc., a leading developer and provider of instrumentation and systems for EMC emission and immunity testing, has expanded its broadband amplifier line to include a new Class A model that operates from 10 kHz to 400 MHz with a saturated power level of 110 W.

The CBA 400M-110 uses gallium arsenide (GaAs) integrated circuit technology to provide markedly better compression characteristics and increased efficiency than comparable silicon-based power amplifiers.

The new power amplifier is designed for demanding EMC testing environments with non-ideal load conditions due to mismatch caused by the coupling device or equipment under test (EUT) in the antenna’s path, making it ideal for automotive, military and aerospace BCI EMC testing.  It offers the same high reliability and excellent performance as other models in Teseq’s extensive amplifier line.


The GaAs amplifier circuit’s Class A push pull design ensures linear performance with high reliability and low distortion across the 10 kHz to 400 MHz operating range as well as continued operation at full power even when an open or short circuit is present.

For high efficiency, the CBA 400M-110 is powered from a switched mode power supply giving the amplifier a high power factor and a wide voltage operating range.  Integral fans cool the unit and an excess temperature sensor prevents faulty cooling.  A remote control option is available for this unit.

A safety interlock connector is provided, should standby mode be needed.  This feature can be activated by a short circuit to ground.  In addition, integrated front panel indicators reveal over-temperature and RF interlock conditions.

Harmonics are better than -20 dBc at 80 W output.  Operating temperature ranges from 0°C to 40°C (32°F to 104°F).

Pricing for the CBA 400M-110 starts at $17,000 and lead time is 12 – 16 weeks ARO.