Amplifiers

An EMC (Electromagnetic Compatibility) Amplifier is a specialised broadband power amplifier designed to increase the strength of RF signals for immunity testing. Unlike standard audio or narrow-band wireless amplifiers, EMC amplifiers must maintain high linearity and stability across an extremely wide range of frequencies (e.g., from 150 kHz up to 3 GHz or higher).

Why Choose an Amplifier?

Broadband Performance: They are designed to cover multiple octaves in a single band, allowing for continuous frequency sweeps during testing without having to switch equipment.

High VSWR Tolerance: EMC testing often involves driving "mismatched" loads (like antennas in a shielded room or injection probes). These amplifiers are built to be "rugged," meaning they won't shut down or sustain damage when power is reflected back from the load.

Linear Gain: To ensure that the test signal remains "clean" and doesn't develop unwanted harmonics, these amplifiers provide a very flat and linear power output across their entire operating range.

Class A Operation: Most high-quality EMC amplifiers operate in "Class A," which provides the best signal purity and the most reliable performance when the load impedance is unpredictable.

Core Applications

Radiated Immunity Testing (IEC 61000-4-3): Used to drive an antenna (such as a Log-Periodic or Horn antenna) to create a high-strength electromagnetic field. This "bathes" the Device Under Test (DUT) in RF energy to see if it malfunctions.

Conducted Immunity Testing (IEC 61000-4-6): The amplifier provides the power needed for a Bulk Current Injection (BCI) probe or a Coupling Decoupling Network (CDN) to "inject" interference directly into the power or data cables of a product.

Component Characterisation: Used in research and development to amplify low-level signals from a tracking generator or signal generator to a level where the non-linear behavior of filters, attenuators, or sensors can be observed.

General Purpose RF Laboratory Work: Anywhere a "boost" is needed for a signal source to drive a specific transducer or experimental setup.

SKU	Brand	Frequency Range	Power	Modulator	Gain	Application	Stress Levels	Supply	Stock	Price
TBLPA1	Tekbox	10MHz-1GHz	1 W Out	N/A	32 dB	General purpose pre-amplifier	N/A	Mains 100 – 240V AC	1	£745.00
TBCS101-DA	Tekbox	110 MHz	±50V In	N/A	1:50	Differential amplifier for CS101 setups	N/A	+5V, USB-C	1	£266.00
TBCS101-TGA	Tekbox	20MHz	+20 dBm In	N/A	20 dB	Driver amplifier for CS101 setups	N/A	+5V, USB-C	2	£250.00
TBDA1-14	Tekbox	40 MHz - 3 GHz	+20 dBm In	N/A	14 dB	Immunity testing in TEM cells	N/A	+5V / 115mA, mini USB-B	2	£162.00
TBDA1-28	Tekbox	40 MHz - 3 GHz	+6 dBm In	N/A	28 dB	General purpose pre-amplifier, near-field probe pre-amplifier	N/A	+5V / 115mA, mini USB-B	5	£201.00
TBHDR1	Tekbox	30 kHz-1.5 GHz	+10 dBm In	N/A	20 dB	High dynamic range pre-ampliﬁer, General purpose pre-amplifier	N/A	+5V / 115mA, mini USB-B	2	£181.00
TBLNA-110M-HZ	Tekbox	DC-500 MHz	50 Vpp In	N/A	20 dB	Impedance converter HighZ to 50 Ohm in-circuit measurements in 50 Ohm systems	N/A	12V DC	On Backorder	£585.00
TBLNA-9k30	Tekbox	9 kHz to 30 MHz	N/A	N/A	43 dB	Pre-amplifier for the TBMA6-P	N/A	12 pieces standard AA NiMh cells (Not Supplied)	1	£627.00
TBMDA-BCI25	Tekbox	1MHz-400MHz	25 W Out	AM 1kHz 80%, PM 1kHz 50%, PM 217Hz 12.5%	47 dB	Immunity pre-compliance testing in TEM-cells, CDNs according EN 61000-4-6, BCI probes according ISO 11452-4	Level I (AM, CW) Level II (AM, CW) Level III (CW) Level IV (CW)	Mains 100 – 240V AC	On Backorder	£2,128.00
TBMDACDN25	Tekbox	150kHz-250MHz	25 W Out	AM 1kHz 80%, PM 1kHz 50%, PM 217Hz 12.5%	47 dB	Immunity pre-compliance testing in TEM-cells, CDNs according EN 61000-4-6, BCI probes according EN 61000-4-6	Level 1 Level 2 Level 3	Mains 100 – 240V AC	1	£2,519.00
TBMDA1	Tekbox	40MHz-3GHz	150 mW Out	AM 1kHz 80%, PM 1kHz 50%, PM 217Hz 12.5%	22 dB	Immunity pre-compliance testing in TEM-cells	TBTCO:100 V/m TBTC1:56 V/m TBTC2:28 V/m TBTC3:18V/m (CW)	USB	On Backorder	£279.00
TBMDA2	Tekbox	10MHz- 1.5GHz	0.5 W Out	AM 1kHz 80%, PM 1kHz 50%, PM 217Hz 12.5%	43 dB	Immunity pre-compliance testing in TEM-cells	TBTCO: 178 V/m TBTC1:100 V/m TBTC2:50 V/m TBTC3:33 V/m (CW)	USB	1	£466.00
TBMDA3B	Tekbox	10MHz-1GHz	8 W Out	AM 1kHz 80%, PM 1kHz 50%, PM 217Hz 12.5%	42 dB	Immunity pre-compliance testing in TEM-cells	TBTCO: 711 V/m TBTC1:398 V/m TBTC2:199 V/m TBTC3:132 V/m (CW)	Mains 100 – 240V AC	On Backorder	£851.00
TBMDA4B	Tekbox	100kHz-75MHz	5 W Out	AM 1kHz 80%, PM 1kHz 50%, PM 217Hz 12.5%	48 dB	Immunity pre-compliance testing in TEM-cells	TBTCO: 565 V/m TBTC1:316 V/m TBTC2:158 V/m TBTC3:105 V/m (CW)	Mains 100 – 240V AC	On Backorder	£839.00
TBMDA5	Tekbox	150kHz-1GHz	2.5 W Out	AM 1kHz 80%, PM 1kHz 50%, PM 217Hz 12.5%	38 dB	Immunity pre-compliance testing in TEM-cells, CDNs according EN 61000-4-6	Level 1 Level 2 (lim. freq.)	Mains 100 – 240V AC	1	£923.00
TBMDA7	Tekbox	1GHz-3GHz	400 mW Out	AM 1kHz 80%, PM 1kHz 50%, PM 217Hz 12.5%	40 dB	Immunity pre-compliance testing in TEM-cells	TBTCO:150 V/m TBTC1:80 V/m TBTC2:n.a. TBTC3:n.a. (CW)	USB	On Backorder	£432.00
TBWA2-20DB-1	Tekbox	1.5 MHz-6 GHz	+10 dBm	N/A	20 dB	General purpose pre-amplifier, near-field probe pre-amplifier	N/A	+5V / 115mA, mini USB-B	2	£181.00
TBWA2-40DB	Tekbox	2.5 MHz-6 GHz	-10 dBm	N/A	40 dB	General purpose pre-amplifier, near-field probe pre-amplifier	N/A	+5V / 115mA, mini USB-B	10+	£229.00

Showing 1–16 of 19 results

TBLPA1 Linear Wideband RF Power Amplifier
£745.00 (£894.00 inc. VAT)
1 in stock (can be backordered)

Availability: Stock models delivered next working day (UK only) for orders placed before 16:30 (Mon - Fri)
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TEKBOX TBCS101-DA Differential Amplifier
£266.00 (£319.20 inc. VAT)
1 in stock (can be backordered)

Availability: Stock models delivered next working day (UK only) for orders placed before 16:30 (Mon - Fri)
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TEKBOX TBCS101-TGA DC – Coupled Low Noise Amplifier
£250.00 (£300.00 inc. VAT)
2 in stock

Availability: Stock models delivered next working day (UK only) for orders placed before 16:30 (Mon - Fri)
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TEKBOX TBDA1/14 14dB Wideband Driver Amplifier
£162.00 (£194.40 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)
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TEKBOX TBDA1/28 28dB Wideband Driver Amplifier
£201.00 (£241.20 inc. VAT)
5 in stock (can be backordered)

Availability: Stock models delivered next working day (UK only) for orders placed before 16:30 (Mon - Fri)
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TEKBOX TBHDR1 High Dynamic Range Amplifier
£181.00 (£217.20 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)
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TEKBOX TBLNA-110M-HZ DC-Coupled Impedance Converter
£585.00 (£702.00 inc. VAT)
Available on back-order

Availability: Stock models delivered next working day (UK only) for orders placed before 16:30 (Mon - Fri)
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TEKBOX TBLNA-9K30 Loop Antenna Pre-Amplifier
£627.00 (£752.40 inc. VAT)
1 in stock (can be backordered)

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TEKBOX TBMDA-BC125 MODULATED WIDEBAND POWER AMPLIFIER
£2,128.00 (£2,553.60 inc. VAT)
Available on back-order

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TEKBOX TBMDA-CDN25 MODULATED WIDEBAND POWER AMPLIFIER
£2,519.00 (£3,022.80 inc. VAT)
1 in stock (can be backordered)

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TEKBOX TBMDA1 Modulated Wideband Driver Amplifier
£279.00 (£334.80 inc. VAT)
Available on back-order

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TEKBOX TBMDA2 Modulated Wideband Driver Amplifier
£466.00 (£559.20 inc. VAT)
1 in stock (can be backordered)

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TEKBOX TBMDA3B Modulated Wideband Power Amplifier
£851.00 (£1,021.20 inc. VAT)
Available on back-order

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TEKBOX TBMDA4B Modulated Wideband Power Amplifier
£839.00 (£1,006.80 inc. VAT)
Available on back-order

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TEKBOX TBMDA5 Modulated Wideband Power Amplifier
£923.00 (£1,107.60 inc. VAT)
1 in stock (can be backordered)

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TEKBOX TBMDA7 1GHz-3GHz Modulated Wideband Power Amplifier
£432.00 (£518.40 inc. VAT)
Available on back-order

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