The new Ampleon ART1K6 makes it possible to create highly rugged 2500W pallets for high VSWR industrial and broadcast (analog and digital) applications. In this particular circuit two such devices are used in parallel in a wideband high-efficiency planar pallet design with two on-board combiners. You will likely have to parallel two PSU units to supply the power to this pallet. Make sure to select a power supply which supports paralelling.
Device: 2x Ampleon ART1K6
Approx >80% efficiency @ 88-108Mhz CW
Up to 2800W pulsed at 55V per device (two on board)
Recommended voltage supply: 50-55V DC
Supply current: 55A
Operating Temperature range: 0 to +70 °C ( at Device Flange )
Storage Temperature range: -30 to +90 °C
Load Mismatch: 65:1 (all phase angle)
Ensure sufficient strong airflow across the top of the pallet, the PCB can get very hot at max power! This pallet requires a good heatsink!
Frequency Range: 87.5 to 108 Mhz
Power Gain: 26dB typ. ±1dB
Power Output: 2500W typ., 2700W max @ 55V
Power Input: 6-8W typ.
Efficiency: 84% max. @ 108Mhz FM CW.
Supply Voltage: 30-55V typ, 55V max
Size (LxWxH): 255x100x30mm
F2 Second Harmonic: -35dB typ.
F3 Third Harmonic: -35dB typ.
– Ensure shielding between final stage and audio stage with exciter. Install a good feed-through capacitor on the supply +50V wiring feeding the power output stage. This will keep and RF from the power line.
– Excessive drive level can damage this amplifier; design of equipment where the amplifier will be mounted must foresee an appropriate protection circuits.
– Amplifier efficiency is function of supply voltage, in order to obtain max efficiency please reduce supply in function of desired output power. Generally best compromise between efficiency and harmonic emission, is obtained when the amplifier work at about 2-3 dB of gain compression.
– RF pallets are sensitive devices, if you do not have sufficient experience please consider a fully finished product instead. They can be burned by applying too much drive power, too high supply voltage, not using proper heatsink, using filter with unsufficient specifications, connecting mismatched loads or no load at all and also by soldering coax with too long leads. For this reason there is no warranty for any pallet. We do assure you that every pallet is tested and is 100% operational as it leaves our workshop.
Quantity discount is available and shipping becomes a lot cheaper per unit as quantity goes up. For additional info and prices please ask for a quote here.