V1.3
TBMDA1
Modulated Wideband Driver Amplifier
1 Introduction
The TBMDA1 modulated wideband driver 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 analyzers. With its gain of 22 dB 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.
Picture 1
– TBMDA1 modulated wideband driver amplifier front view
Picture 2
– TBMDA1 modulated wideband driver amplifier rear view
