TekBox TBMDA5 – Modulated Wideband Power Amplifier, 150 kHz – 400 MHz

• Frequency range: 150 kHz – 400 MHz, usable from 100 kHz to 1.2 GHz
• Supply voltage range: 110V – 240V
• Input / Output: 50 Ohm, N female
• Designed to be driven by the tracking generator output of spectrum analyzers
• Provides the necessary power, bandwidth and modulation for conducted immunity testing

The TekBox TBMDA5 modulated power amplifier provides the necessary power, bandwidth and modulation for conducted immunity testing using CDN’s in the frequency range from 150kHz to 400MHz. It is designed to be driven by the tracking generator output of spectrum analyzers. With a 1 dB compression point of up to 2.5W in the frequency range 150 kHz to 400 MHz it can generate test levels class 1 and class 2 according to ISO / EN 61000-4-6. A built in AM- modulator enables the use of tracking generators as a signal source.

The TBMDA5 has sufficient gain to achieve maximum output power with 0 dBm provided by a spectrum analyzer tracking generator.

Besides 1 kHz, 80% AM, the TBMDA5 provides built in modulation capability to generate 1 kHz, 50% duty cycle PM signals. In PM mode, the TBMDA5 can also generate a 217 Hz signal with 12.5% duty cycle in order to simulate mobile phone TDMA noise.

Applications:

• General-purpose wideband RF power amplifier
• Wideband RF power amplifier for conducted immunity testing driving CDNs or BCI-probes
• Wideband RF power amplifier for radiated immunity testing, driving near field probes
• Wideband RF power amplifier for radiated immunity testing, driving TEM Cells

Maximum Ratings:

Maximum input power: +3 dBm

The output of the TBMDA5 is quite tolerant to output mismatch, however open or shorted load is not recommended, as it can potentially cause damage to the output transistor. When driving near field probes, current probes or any load of unknown impedance, it is highly recommended to insert an appropriate attenuator at the output of the amplifier in order to protect the output stage.