The VBA1000-250s is an 80-1000MHz high power amplifier designed primarily for EMC appliciations.

The amplifier produces around 300W at the important VHF frequencies, and is housed in a compact 4U case. VBA1000-250s is intended for applications where an 18V/m field is required and incorporates measures to improve power delivery into high VSWR loads.

• 80-1000MHz
• 250W
• Silicon LDMOS technology
• Class A operation

Designed specifically for automotive, military and aerospace BCI EMC testing, this mismatch tolerant Class A amplifier delivers power continuously into the varying match typically associated with this type of testing.

The Class A push pull design ensures a high reliability, low distortion linear performance across the frequency range. This design also ensures that the amplifier will continue to operate at full power even when presented with an open or short circuit at its output.

The unit is powered from a switched mode power supply for high efficiency, high power factor and wide voltage range operation. The unit is air-cooled with integral fans, and is protected against faulty cooling by excess temperature sensing. Two safety interlock connectors are provided, one to short for interlock and the other to open circuit. Front panel indicators are provided to indicate over-temperature, standby and operate and RF interlock operation.

• Frequency Range (Instantaneous) 0.01-400MHz
• Rated Output Power 260W minimum (>300W typical)
• Output Power at 1dB Gain Compression 210W minimum (>240W typical)
• Gain 54dB Min
• Third Order Intercept Point (see note 1) 64dBm
• Gain variation with Frequency ±3dB
• Harmonics at 200W Output Power Better than -20dBc
• Output Impedance 50 Ohms
• Stability Unconditional
• Output VSWR Tolerance (see note 2) Infinity:1
• Input VSWR 2:1
• Supply Voltage (single phase) 100-264V ac
• Supply Frequency Range 47-63Hz
• Supply Power <2kVA (Max)
• Mains Connector IEC320 C20
• Mechanical
• RF Connector Style Type N Female
• Safety Interlock BNC female, o/c and/or s/c to mute
• USB/GPIB Interface Optional
• Dimensions
• 19 inch, 6U Case, 440mm Deep
• Mass 30kg
• Operating Temperature Range 0-40°C
• Regulatory Compliance
• Conducted and Radiated Emissions EN61326 Class B
• Conducted and Radiated Immunity EN61326: 1997 Table 1
• Safety EN61010-1
• Mains Harmonic Currents EN61000-3-2
• Voltage Fluctuations & Flicker EN61000-3-3

The VBA400-110 is a member of our family of 10kHz-400MHz high power amplifiers, designed primarily for EMC applications.

Like all our products of the VBA400 series, it is based on rugged push-pull MOSFET technology, for extra even order harmonic suppression.

The amplifier operates in class A, the benefits for EMC applications being very low distortion and tolerance of 100% mismatch. Fold-back protection is neither fitted nor needed! This makes it supremely suited for very demanding transducer requirements.VBAVB

• Frequency Range (Instantaneous) 10kHz-400MHz
• Rated Output Power 110W Min (>150W typical)
• Output Power at 1dB Gain Compression 80W Min (>110W typical)
• Gain 51dB Min
• Third Order Intercept Point (see note 1) 61dBm
• Gain variation with Frequency ±2dB
• Harmonics at 75W Output Power Better than -20dBc
• Output Impedance 50 Ohms
• Stability Unconditional
• Output VSWR Tolerance (see note 2) Infinity:1
• Input VSWR 2:1 (Max)
• Supply Voltage 100 - 240V ac (+/- 10%)
• Supply Frequency Range 45-63Hz
• Supply Power <1kVA (Max)
• Mains Connector IEC 320
• Mechanical
• RF Connector Style Type N Female
• Safety Interlock Dual input, S/C and/or O/C to Mute
• USB/GPIB Interface Optional
• Dimensions 19 inch, 4U Case, 440mm Deep
• Mass 18kg
• Operating Temperature Range 0-40°C
• Case Style Options Rack mount with Front or Rear panel connectors Bench mount with Front panel connectors
• Regulatory Compliance Conducted and Radiated Emissions EN61326 Class A
• Conducted and Radiated Immunity EN61326:1997 Table 1
• Safety EN61010-1

The VBA 250-2500A is a member of our family of 10kHz-250MHz high power amplifiers, designed primarily for EMC applications.

Like all our products of the VBA250 series, it is based on high performance silicon push-pull MOSFET output stages. The amplifier utilizes exclusive power combining techniques, minimizing loss for a more efficient solution.

The amplifier can be controlled from either the front panel or remote control via the Ethernet, USB and GPIB interfaces. The digital interface system manages enabling and disabling the amplifier, monitoring power levels, monitoring power supply health, self diagnostic reporting, communicating with the control computer and implementing electrical interlocks. The keypad and display interface is used for monitoring amplifier state, power levels, interlock states etc. and for configuration options.

The amplifier operates in class A, the benefits for EMC applications being very low distortion and tolerance of 100% mismatch. Fold-back protection is neither fitted nor needed! This makes it supremely suited for very demanding antenna and test chamber requirements.

• Frequency Range (Instantaneous) 10kHz-250MHz
• Rated Output Power 2500W 10kHz-100MHz 2500-1900W 100MHz-250MHz (de-rating slope of 4.8W/MHz)
• Output Power at 1dB Gain Compression 2100W 10kHz-100MHz 2100-1300W 100-250MHz (de-rating slope of 5.33W/MHz)

The VBA1000-1000s is a member of our family of 80-1000MHz high power amplifiers, designed primarily for EMC applications.

It is based on Silicon LDMOS technology, offering the user the benefits of high linearity, ruggedness and efficiency. The amplifier operates in class A, the benefits for EMC applications being very low distortion and tolerance of 100% mismatch. Fold-back protection is neither fitted nor needed! This makes it supremely suited for very demanding antenna and test chamber requirements.

The amplifier can be controlled from either the front panel or remote control via the Ethernet, USB and GPIB interfaces. The digital interface system manages enabling and disabling the amplifier, monitoring power levels, monitoring power supply health, communicating with the control computer, implementing electrical interlocks and has comprehensive diagnostic functions. The keypad and display interface is used for monitoring amplifier state, power levels, interlock states etc. and for configuration options.

• Frequency Range (Instantaneous) 80-1000MHz
• Output Power at 3dB Gain Compression1500W (80-400MHz) 1000W (400-1000MHz)
• Output Power at 1dB Gain Compression1000W (80-400MHz)800W (400-1000MHz)