TEKBOX TBMDA1 Modulated Wideband Driver Amplifier

£280.57 (£336.68 inc VAT)

2 in stock (can be backordered)

Availability: Stock models delivered next working day (UK only) for orders placed before 16:30 (Mon - Fri)


The TEKBOX TBMDA1 modulated wideband driver amplifier is an inexpensive signal source for immunity testing of electronic circuits, products and systems. It is designed to be driven by the tracking generator output of spectrum analysers. With its gain of 22dB and 1dB compression point of +22dBm, it can boost the output power of a tracking generator up to 150mW. The TBMDA1 is ideal to drive TEKBOX near-field probes in order to find the sensitive spot of an electronic circuit or to create electric fields up to 50V/m when driving the TEKBOX TEM Cell TBTC1, 25V/m when driving the TBTC2 or 18V/m when driving the TBTC3. Test signals for immunity testing can be CW, AM or PM. Consequently, the TBMDA1 provides built in modulation capability to generate 1kHz AM or PM signals. In PM mode, the TBMDA1 can also generate a 217Hz Signal with 12.5% duty cycle in order to simulate mobile phone TDMA noise.

The following items are included:

  • 1-off RF amplifier module
  • 1-off RF cable – N(m) to SMA(m)
  • 1-off RF cable – SMA(m) to SMA(m)
  • 1-off RF adapter – N(m) to SMA(f)
  • 1-off USB lead – type-A to mini-B
  • 1-off measurement plot


  • CW amplifier (modulation off)
  • 1kHz, 80% AM modulation
  • 1kHz, 50% duty cycle pulse modulation
  • 217 Hz, 12.5% duty cycle pulse modulation


  • Input: 50Ω, SMA female
  • Output: 50Ω, SMA female
  • Nominal Supply Voltage: 5V (@ 235mA typ., mini-USB-B connector)
  • Maximum Supply Voltage: 5.5V
  • Maximum Input Power: +9dBm
  • 1dB Output Compression Point @ 40MHz: +21.5dBm
  • 1dB Output Compression Point @ 2GHz: +22.5dBm
  • Third-Order Output Intercept Point @ 40MHz: +39dBm
  • Third-Order Output Intercept Point @ 2GHz: +42dBm
  • Reverse Isolation, S12: -45dB
  • Noise Figure: 3 – 4dB
  • Internal Modulation Frequency AM: 1kHz ±10%
  • Internal Modulation Frequencies PM: 1kHz ±10%, 217Hz ±20%
  • Gain: 21.6dB @ 25MHz, 24.9dB @ 50MHz, 25.5dB @ 100MHz, 25.6dB @ 500MHz, 24.9dB @ 1GHz, 24.1dB @ 1.5GHz, 22.2dB @ 2GHz, 22.8dB @ 2.5GHz, 25.8dB @ 3GHz
Input 50 Ohm, SMA female
Output 50 Ohm, SMA female
Nominal Supply Voltage 5V, typ. 235mA, Mini-USB-B connector
Maximum Supply Voltage 5.5V
Maximum Input Power +9dBm
1dB Output Compression Point @ 40MHz +21.5dBm
1dB Output Compression Point @ 2GHz +22.5dBm
3rd Order Output Intercept Point @ 40MHz +39dBm
3rd Order Output Intercept Point @ 2GHz +42dBm
Reverse Isolation S12 -45dB
Noise Figure 3 … 4 dB
Internal modulation frequency AM 1 kHz  ±10%
Internal modulation frequency PM 1 kHz  ±10%, 217 Hz ±20%
Duty cycle, PM 50% ±10% @ 1 kHz; 12.5% ±20% @ 217 Hz
25MHz 50MHz 100MHz 500MHz 1GHz 1.5GHz 2GHz 2.5GHz 3GHz
21.6dB 24.9dB 25.5dB 25.6dB 24.9dB 24.1dB 22.2dB 22.8dB 25.8dB


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