CBA 1G-018
100 kHz TO 1 GHz 18 WATT
Designed specifically for EMC testing, this 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.
Class A linear and low distortion
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.
Ideal for use with CDNs and small
GTEM cells
Mismatch tolerant and unconditionally stable
Wide instantaneous bandwidth
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.
A d v a n c e d Te s t S o l u t i o n s f o r E M C
CBA 1G-018
100 kHz TO 1 GHz 18 WATT
Technical specifications
Frequency range (instantaneous)
100 kHz to 1000 MHz
Rated output power
18 W minimum (20 W typical)
Output power at 1 dB gain compression
15 W minimum (18 to 23 W typical)
44 dB
Third order intercept point (see note 1)
54 dBm
Gain variation with frequency
±3 dB
Harmonics at 15 W output power
Better than -20 dBc
Output impedance
50 Ohms
Output VSWR tolerance (see note 2)
Infinite any phase
Input VSWR
RF connector style
Type N female
USB interface
Supply voltage (single phase)
85 to 264 Vac
Supply frequency range
45 to 63 Hz
Supply power
<150 VA
Mains connector
Conducted and radiated emissions
EN61326 Class A
Conducted and radiated immunity
EN61326: 1997 Table 1
Mains harmonic currents
Voltage fluctuations and flicker
Case dimensions
19 inch, 3U case, 440 mm deep
9 kg
Operating temperature range
0 to 40°C
Options (select at time of ordering)
Bench model with front panel mounted input/output connectors
Rack mountable with front panel mounted input/output connectors
Rack mountable with rear panel mounted input/output connectors
1. The third order intercept point is a nominal value, as its calculation depends upon the power level at
which distortion measurements are made.
2. Output VSWR tolerance is specified for excitation within the permitted levels and frequency range.
Teseq AG
Nordstrasse 11F 4542 Luterbach Switzerland
T + 41 32 681 40 40 F + 41 32 681 40 48
691-122A September 2008
A d v a n c e d Te s t S o l u t i o n s f o r E M C