1030–1090 MHz 3.2 kW and 4 kW IFF Power Amplifier

Model: PA1033 / PA1033-001

3,200 W or 4,000 W minimum at P1dB · Class AB · 9.50 × 6.87 × 4.40 in

PA1033 IFF Power Amplifier
  • ISO 9001:2015
  • IPC-A-610 Class 3
  • ITAR Registered

The PA1033 is a single-channel IFF power amplifier for transmitting long Mode 5 and Mode S 112-bit interrogation pulses. Operating in Class AB, it delivers 3,200 W minimum at the 1 dB compression point (4,000 W, +66 dBm, typical), and the PA1033-001 delivers 4,000 W minimum (5,000 W, +67 dBm, typical). A +10 dBm nominal pulsed input produces +65 dBm (PA1033) or +66 dBm (PA1033-001). Its controlled response at 1090 MHz (-2 dB) lets it serve as an interrogator or a responder.

The amplifier is built around a high-performance brazed heatsink, which keeps the air-cooled package to 9.50 × 6.87 × 4.40 in. Harmonics are low for the power delivered: the second harmonic is -40 dBc typical and all others are below -70 dBc. Input and output return loss is -20 dB typical. It runs from +34 VDC, +12 VDC and +5 VDC supplies.

For dual-channel Sum and SLS operation with built-in T/R switches, see the PA1105 (1,200 W), PA1123 (2,800 W) and low-power PA1138.

Features

  • 3,200 W (PA1033) or 4,000 W (PA1033-001) minimum at P1dB; 4,000 W or 5,000 W typical
  • Covers 1030–1090 MHz, for use as an interrogator or a responder
  • Supports all IFF modes, including Mode S and Mode 5
  • Class AB operation
  • Output isolator; operates into 10:1 VSWR without damage
  • Over-voltage and over-current protected power supplies
  • Thermal, mod gate and DC input fault indications
  • Compact air-cooled package with a brazed heatsink

Specifications

Frequency Range
1030–1090 MHz
Operation Mode
Class AB; supports all IFF modes, including Mode S and Mode 5
RF Output Power Range
PA1033: +53 to +65 dBm at 1030 MHz, +51 to +63 dBm at 1090 MHz; PA1033-001: +53 to +66 dBm at 1030 MHz, +51 to +64 dBm at 1090 MHz (P1dB, minimum)
RF Output Power
+66 dBm (PA1033) or +67 dBm (PA1033-001) maximum at 8% duty cycle
Typical Output Power
4,000 W, +66 dBm (PA1033); 5,000 W, +67 dBm (PA1033-001)
RF Input Power
-20 to +11 dBm
Nominal Drive
+10 dBm pulsed input for +65 dBm (PA1033) or +66 dBm (PA1033-001) output
Gain
55 ± 1.5 dB
RF Input VSWR
1.5:1 maximum
RF Input Modulation
RF pulse, arbitrary phase modulation 15 MHz at 3 dB maximum; AM 30 dB maximum
Pulse Width
32 µs maximum
RF Output VSWR
1.5:1 maximum (ref 50 Ω)
Output Protection
Operates into 10:1 VSWR without damage; output isolator
Impedance
50 Ω nominal, input and output
Return Loss
-20 dB typical, input and output
Harmonics
2nd -30 dBc, 3rd -50 dBc, 4th -65 dBc, 5th -70 dBc, 6th -75 dBc, 7th -80 dBc, 8th–12th -90 dBc maximum
Harmonics, Typical
2nd -40 dBc; all others below -70 dBc
Fault Indications
Thermal, mod gate, DC input power below threshold
Cooling
Customer-supplied forced air through integral front and rear panel openings
Input Power
+34 VDC at 6 A (PA1033) or 8 A (PA1033-001), +12 VDC at 0.3 A, +5 VDC at 0.2 A maximum
Operating Temperature Range
-25 to +65 °C
Storage Temperature Range
-55 to +71 °C
Altitude
Sea level to 15,000 ft
Dimensions
9.50 × 6.87 × 4.40 in
Connectors
SMA RF input and output; two 25-pin filtered D-sub power connectors; 9-pin D-sub control/status

Resources

IFF 3,200 W Amplifier Brochure IFF 4,000 W Amplifier Brochure

Custom Configurations

The 1030–1090 MHz 3.2 kW and 4 kW IFF Power Amplifier can be configured to your program’s requirements. Tell us the application’s needs and an engineer will follow up directly.