RF Amplifiers

Wideband RF power amplifiers and RF signal generators are critical components in both radiated and conducted immunity tests. The combined cost of the requisite immunity test equipment is prohibitively expensive for pre-compliance applications.
Tekbox created a low-cost solution comprised of modulated RF power amplifiers driven by spectrum analyzer tracking generators. Our amplifiers include built-in modulators that produce the typical modulation forms defined by the applicable standards, as tracking generators provide a CW output signal: 1 kHz, 80% AM, 1 kHz, 50% duty cycle PM, 217 Hz, 12.5% duty cycle PM.
Our EMCview software controls the frequency and output power of the tracking generator during testing.

Depending on model, our amplifiers currently cover the frequency range from 100 kHz to 1.5 GHz and the available output power covers the range from 150 mW to 25 W.
The modulated amplifiers are suitable for pre-compliance radiated immunity testing in TEM cells and pre-compliance conducted immunity testing with CDNs or bulk current injection probes.

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Modulated RF Power Amplifiers

Model	TBMDA1	TBMDA2	TBMDA3B	TBMDA4B	TBMDA5	TBMDA7	TBLPA1
Frequency range	40MHz-3GHz	10MHz- 1.5GHz	10MHz-1GHz	100kHz-75MHz	150kHz-1GHz	1GHz-3GHz	10MHz-1GHz
Output power	150 mW	0.5 W	8 W	5 W	2.5 W	400 mW	1 W
Modulator	AM,1kHz,80%, PM,1kHz,50%, PM,217Hz,12.5%	AM,1kHz,80%, PM,1kHz,50%, PM,217Hz,12.5%	AM,1kHz,80%, PM,1kHz,50%, PM,217Hz,12.5%	AM,1kHz,80%, PM,1kHz,50%, PM,217Hz,12.5%	AM,1kHz,80%, PM,1kHz,50%, PM,217Hz,12.5%	AM,1kHz,80%, PM,1kHz,50%, PM,217Hz,12.5%	–
Gain	22 dB	43 dB	42 dB	48 dB	38 dB	40 dB	32 dB
Application	Immunity pre-compliance testing in TEM-cells	Immunity pre-compliance testing in TEM-cells	Immunity pre-compliance testing in TEM-cells	Immunity pre-compliance testing in TEM-cells	Immunity pre-compliance testing in TEM-cells or with CDNs according EN 61000-4-6	Immunity pre-compliance testing in TEM-cells	General Purpose
Maximum stress levels	TBTCO:100 V/m TBTC1:56 V/m TBTC2:28 V/m TBTC3:18V/m (CW)	TBTCO: 178 V/m TBTC1:100 V/m TBTC2:50 V/m TBTC3:33 V/m (CW)	TBTCO: 711 V/m TBTC1:398 V/m TBTC2:199 V/m TBTC3:132 V/m (CW)	TBTCO: 565 V/m TBTC1:316 V/m TBTC2:158 V/m TBTC3:105 V/m (CW)	Level 1 Level 2 (lim. freq.)	TBTCO:150 V/m TBTC1:80 V/m TBTC2:n.a. TBTC3:n.a. (CW)	–
Supply	USB	USB	Mains 100 – 240V AC	Mains 100 – 240V AC	Mains 100 – 240V AC	USB	Mains 100 – 240V AC
Product Page	TBMDA1	TBMDA2	TBMDA3B	TBMDA4B	TBMDA5	TBMDA7	TBLPA1

Model	TBMDA-CDN25	TBMDA-BCI25	TBMDA-BCI100
Frequency range	150kHz-250MHz	1MHz-400MHz	1MHz-400MHz
Output power	25 W	25 W	100 W
Modulator	AM,1kHz,80%, PM,1kHz,50%, PM,217Hz,12.5%	AM,1kHz,80%, PM,1kHz,50%, PM,217Hz,12.5%	AM,1kHz,80%, PM,1kHz,50%, PM,217Hz,12.5%
Gain	47 dB	47 dB	52 dB typ.
Application	Immunity pre-compliance testing with CDNs or BCI probes according EN 61000-4-6	Immunity pre-compliance testing with BCI-probes according ISO 11452-4	Immunity pre-compliance testing with BCI-probes according ISO 11452-4
Maximum stress levels	Level 1 Level 2 Level 3	substitution method: Level I (AM, CW) Level II (AM, CW) Level III (CW) Level IV (CW)	substitution method: Level I (AM, CW) Level II (AM, CW) Level III (AM, CW) Level IV (AM, CW)
Supply	Mains 100 – 240V AC	Mains 100 – 240V AC	Mains 100 – 240V AC
Product Page	TBMDA-CDN25	TBMDA-BCI25	TBMDA-BCI100

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RF wideband pre-amplifiers

Model	TBWA2/20dB	TBWA2/40dB	TBHDR1
Frequency range	1.5 MHz-6 GHz	2.5 MHz-6 GHz	30 kHz-1.5 GHz
Gain typ.	20 dB	40 dB	20 dB
Max. input power	+10 dBm	-10 dBm	+10 dBm
P1dB typ.	+18 dBm @ 2 GHz	+18 dBm @ 2 GHz	+18 dBm @ 100 MHz
Output IP3	+33 dBm @ 2 GHz	+33 dBm @ 2 GHz	+ 38 dBm @ 100 MHz
Noise figure	+5 dB	+5 dB	2.7 dB
Power supply	+5V / 110mA, mini USB-B	+5V / 210mA, mini USB-B	+5V / 100mA, mini USB-B
Application	General purpose pre-amplifier near-field probe pre-amplifier	General purpose pre-amplifier near-field probe pre-amplifier	General purpose / high dynamic range pre-amplifier
Product Page	TBWA2/20dB	TBWA2/40dB	TBHDR1

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RF driver amplifiers

Model	TBDA1/14dB	TBDA1/28dB
Frequency range	40 MHz-3 GHz	40 MHz-3 GHz
Gain typ.	14 dB	28 dB
Max. input power	+20 dBm	+6 dBm
P1dB typ.	+22 dBm @ 1GHz	+22 dBm @ 1GHz
Output IP3	+43 dBm @ 2GHz	+43 dBm @ 2GHz
Noise figure	+4 dB	+4 dB
Power supply	+5V / 115mA, mini USB-B	+5V / 225mA, mini USB-B
Application	Immunity testing in TEM cells, driven by a modulated RF signal generator	General purpose pre-amplifier near-field probe pre-amplifier
Product Page	TBDA1/14dB	TBDA1/28dB

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DC Coupled Amplifiers

Model	TBLNA-110M-50	TBLNA-110M-HZ	TBCS101-TGA	TBCS101-DA
Frequency Range	DC-110 MHz	DC-500 MHz	DC-20MHz	DC-110 MHz
Gain typ.	40 dB	0dB / 20 dB	20 dB	1:50
Input Impedance	50 Ω	1 MΩ // 20 pF	50 Ω	Differential, 1M Ω//10pF
Max. Input Power	+30 dBm	50 Vpp	+20 dBm	±50V
P1dB typ.	+15 dBm	+8.6 dBm	+15 dBm	n.a.
Power Supply	12V DC	12V DC	+5V, USB-C	+5V, USB-C
Application	Pre-amplifier for TBMR-110M measurement receiver	Impedance converter HighZ to 50 Ohm in-circuit measurements in 50 Ohm systems, using oscilloscope probes	driver amplifier for CS101 setups	Differential amplifier for CS101 setups
Product Page	TBLNA-110M-50	TBLNA-110M-HZ	TBCS101-TGA	TBCS101-DA

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DC Coupled Amplifiers

Model	TBDCA1
3 dB bandwidth	DC – 3 MHz, useable up to 10 MHz
Nominal output power	150 W @ RLOAD ≤ 2 Ω 80 W @ RLOAD = 4 Ω 30 W @ RLOAD = 12 Ω
Max. output voltage	56Vpp
Max. continuous output current	10 Arms
Max. output current	20 Arms for 30 seconds
Min. output impedance	0.5 Ω
Output offset voltage	adjustable; ± 25 V
Application	General purpose output amplifier for arbitrary waveform generators Stress testing according to ISO 16750-2 and ISO 7637-2 Power supply input impedance measurement Structure current injection for MIL-STD-461H, CS109 Voltage ripple injection for MIL-STD-461H, CS101 or RTCA/DO-160 Section 18 Immunity testing according to ISO 11452-10, SAE J1113-2 and various automotive manufacturer specific standards RF power amplifier to drive Helmholtz coils or loop antennas
Product Page	TBDCA1

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Trans-conductance Amplifier/Current Injector

Model	TBRFCI1
Frequency Range	DC – 50 MHz, useable up to 100 MHz
Transconductance	0.1 A/V, 1 A/V
Product Page	TBRFCI1