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V1.3
TBMDA1
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.
Modulated Wideband Driver Amplifier
Picture 1 – TBMDA1 modulated wideband driver amplifier front view
Picture 2 – TBMDA1 modulated wideband driver amplifier rear view
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Summary of Contents for Tekbox TBMDA1
- Page 1 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.
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Page 2: Electrical Specifications
25 MHz 50 MHz 100 MHz 500 MHz 1 GHz 1.5 GHz 2 GHz 2.5 GHz 3 GHz 21.6 dB 24.9 dB 25.5 dB 25.6 dB 24.9 dB 24.1 dB 22.2 dB 22.8 dB 25.8 dB Table 1 – TBMDA1 gain... - Page 3 V1.3 TBMDA1 Modulated Wideband Driver Amplifier Picture 3 – , gain, 300 kHz – 100 MHz, lin. TBMDA1 Picture 4 – TBMDA1, gain, 300 kHz – 3 GHz, lin.
- Page 4 V1.3 TBMDA1 Modulated Wideband Driver Amplifier 3 Driving the TBMDA1 with a tracking generator WARNING: Picture 5 – DSA815 input protected with a 20dB attenuator...
- Page 5 V1.3 TBMDA1 Modulated Wideband Driver Amplifier Picture 6 – output power of the TBMDA1, CW, driven by the DSA815 tracking generator set to -5dBm...
- Page 6 Modulated Wideband Driver Amplifier Picture 7 – output power of the TBMDA1, CW, driven by the DSA815 tracking generator set to -3dBm Picture 8 – output power of the TBMDA1, CW, driven by the DSA815 tracking generator set to -1dBm...
- Page 7 Picture 9 – output power of the TBMDA1, CW, driven by the DSA815 tracking generator set to 0dBm Picture 10 – output power of the TBMDA1, 1 kHz, 50% pulse modulation, driven by the DSA815 tracking generator set to 0dBm, zero span, 1GHz...
- Page 8 TBMDA1 Modulated Wideband Driver Amplifier Picture 10 – output power of the TBMDA1, 217 Hz, 12.5% pulse modulation, driven by the DSA815 tracking generator set to 0dBm, zero span, 1GHz Picture 11 – output power of the TBMDA1, 1 kHz, 80% amplitude modulation, driven by the DSA815 tracking generator set to...
- Page 9 V1.3 TBMDA1 Modulated Wideband Driver Amplifier...
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Page 10: Ordering Information
V1.3 TBMDA1 Modulated Wideband Driver Amplifier 5 Ordering Information Part Number Description TBMDA1 modulated driver amplifier, 1 pc 25cm SMA-male to SMA-male cable, 1 pc 75cm SMA- male to N-male cable. 1 pc SMA-female to N-male coaxial adapter, USB cable, measurement plot Table 2 –...
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