Indeed, some applications, such as radar operating conditions, require biasing the amplifier with a pulsed voltage. This is a feature offered by the AM3100 system.
Other applications require powering the circuit with a DC voltage, but the circuit is driven by a pulsed RF signal, which in turn produces pulsed current consumption.
In this use case, it is common to use a synchronized digital multimeter (DMM) or an oscilloscope connected to a current probe to measure the pulsed current.
- Digital multimeters generally offer high measurement accuracy and resolution (current Y-axis) and high measurement speed, but low time resolution and bandwidth (time X-axis).
- Oscilloscopes generally offer low measurement accuracy and resolution (current Y-axis), but high time resolution and bandwidth (time X-axis), and low measurement speed.
The AM3100 system offers a good compromise between time resolution, current measurement accuracy, and measurement speed. Supplied with IVCAD software, this turnkey solution makes it easy to perform pulsed voltage and current measurements.
This solution is provided with a small, easy-to-use, turnkey test solution on test benches where voltages and currents need to be measured under impulse conditions, in conjunction with IVCAD software.
Product list

The AM3111 SMU is embedded into the AM3100 controller chassis, as a bipolar pulse voltage and current generator.
The AM3121 Pulse SMU is a power probe dedicated to bias the transistor drain (Positive voltages). Optimized for high power pulsed measurements applications (120V, 30A), this probe head embed a current breaker and can be used either for Load Pull applications or general-purpose pulsed SMU. The Strig signal performs overall synchronization of start, stop, and emergency stop. Using either constant level or pulsed mode, the Ptrig signal performs overall synchronization of the power pulse, the measurement sampling time and the transient mask.

The AM3121 probe is compatible with the AM3100 controller and is dedicated to bias transistor drain for general purpose measurements.