TEKBOX TBMDA3 Modulated Wideband Power Amplifier

£933.10 (Β£1119.72 inc VAT)


The TEKBOX TBMDA3 modulated wideband power amplifier is designed in order to create an inexpensive signal source for immunity testing of electronic building blocks and products. It is designed to be driven by the tracking generator output of spectrum analysers. With an input power range of -5dBmÒ€¦0dBm, it can boost the output power of a tracking generator up to 5W. The TBMDA3 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 550V/m when driving the Tekbox TEM Cell TBTC0, 300V/m when driving the TBTC1, 150V/m when driving the TBTC2 or 100V/m when driving the TBTC3. Test signals for immunity testing can be CW, AM or PM modulated. Consequently, the TBMDA3 provides built in modulation capability to generate 1kHz AM or PM signals. In PM mode, the TBMDA3 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 modulated power amplifier
  • 2-off RF cables – N(m) to SMA(m), 75cm
  • 1-off RF attenuator – 30dB, 10W, N-type connectors
  • 1-off power lead


  • CW Amplifier (Modulation Off)
  • 1kHz, 80% AM Modulation
  • 1kHz, 50% Duty Cycle Pulse Modulation
  • 217Hz, 12.5% Duty Cycle Pulse Modulation


  • Input / Output: 50Ω, N-type female
  • Supply Voltage Range: 110 – 240Vac
  • Supply Power Consumption: 20W
  • Maximum Input Power: 3dBm
  • Operating Temperature Range: -20Β°C to 50Β°C
  • Frequency Range: 10MHz – 1GHz
  • 1dB Output Compression Point @ 10MHz: 36dBm
  • 1dB Output Compression Point @ 100MHz: 37dBm
  • 1dB Output Compression Point @ 500MHz: 36dBm
  • 1dB Output Compression Point @ 1GHz: 34dBm
  • Noise Figure: 9dB
  • Harmonics: <-10dBc typ.
  • Internal Modulation Frequency AM: 1kHz Β±10%
  • Internal Modulation Frequencies PM: 1kHz Β±10%, 217Hz Β±20%
  • Duty cycle, PM: 50% Β±10% @ 1kHz; 12.5% Β±20% @ 217Hz
  • Gain: 22.5dB @ 3MHz, 39.6dB @ 7MHz, 42.7dB @ 10MHz, 44.7dB @ 25MHz, 44.7dB @ 100MHz, 44.4dB @ 200MHz, 43.7dB @ 300MHz, 42.6dB @ 400MHz, 42.3dB @ 500MHz, 41.8dB @ 600MHz, 41.9dB @ 700MHz, 40.6dB @ 800MHz, 41.5dB @ 900MHz, 39.9dB @ 1GHz, 37.5dB @ 1.1GHz, 29.8dB @ 1.2GHz
Input 50 Ohm, N female
Output 50 Ohm, N female
Supply Voltage range 110 V…240 V
Supply power consumption 20 W
Maximum Input Power +3 dBm
Operating temperature range -20Β°C to 50Β°C
Frequency range 10 MHz – 1 GHz
1dB output compression point @ 10MHz +36 dBm typ
1dB output compression point @ 100MHz +37 dBm typ
1dB output compression point @ 500 MHz +36 dBm typ
1dB output compression point @ 1 GHz +34 dBm typ
Harmonics < – 10 dBc typ.
Internal modulation frequency AM 1 kHz Β±10%
Internal modulation frequencies PM 1 kHz Β±10%, 217 Hz Β±20%
Duty cycle, PM 50% Β±10% @ 1 kHz; 12.5% Β±20% @ 217 Hz
3MHz 7MHz 10MHz 25MHz 100MHz 200MHz 300MHz 400MHz
22.5dB 39.6dB 42.7 dB 44.7 dB 44.7 dB 44.4 dB 43.7 dB 42.6 dB
500MHz 600MHz 700MHz 800MHz 900MHz 1GHz 1.1GHz 1.2GHz
42.3 dB 41.8 dB 41.9 dB 40.6 dB 41.5 dB 39.9 dB 37.5 dB 29.8 dB


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