TekBox TBMDA-BCI25 – Modulated Wideband Power Amplifier, 1 MHz – 400 MHz

• CW amplifier (modulation off)
• 1 kHz, 80% AM modulation
• 1 kHz, 50% duty cycle pulse modulation
• 217 Hz, 12.5% duty cycle pulse modulation
• Frequency range: 1 MHz – 400 MHz

The TBMDA-BCI25 modulated amplifier provides the necessary bandwidth and modulation for conducted immunity testing using BCI probes per ISO 11452-4 in the frequency range from 1 MHz to 400 MHz. It is designed to be driven by signal generators or by tracking generators of spectrum analyzers. With a 1 dB compression point of up to 30 W in the frequency range 1 MHz to 400 MHz, it can generate test levels up to 400mA. A built-in AM / PM – modulator enables the use of tracking generators as a signal source. The TBMDA-BCI25 has sufficient gain to achieve maximum output power with 0 dBm provided by a spectrum analyzer tracking generator.

Besides 1 kHz, 80% AM, the TBMDA-BCI25 provides built-in modulation capability to generate 1 kHz, 50% duty cycle PM signals. In PM mode, the TBMDA-BCI25 can also generate a 217 Hz Signal with a 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 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: +0 dBm

The output of the TBMDA-BCI25 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 a ≥ 3dB attenuator at the output of the amplifier in order to protect the output stage.