28 September 2011

Teseq’s new power amplifier uses GaAs IC technology to improve compression characteristics

Teseq Inc of Edison, NJ, USA, a provider of instrumentation and systems for electromagnetic compatibility (EMC) emission and immunity testing, has expanded its broadband amplifier line to include a new Class A model that operates from 10kHz to 400MHz with a saturated power level of 110W. The CBA 400M-110 uses gallium arsenide (GaAs) integrated circuit technology to provide better compression characteristics and increased efficiency compared with 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, suiting automotive, military and aerospace BCI (bulk current injection) EMC testing. It offers the same high reliability and 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 10kHz to 400MHz 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.

A safety interlock connector is provided, should standby mode be needed. This 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 -20dBc at 80W output. The operating temperature range is 0-40°C (32-104°F).

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

Tags: GaAs IC

Visit: www.teseq.com