1030/1090 MHz 2.8 kW Dual IFF Pulsed Power Amplifier

Model: PA1123

Sum and SLS channels with T/R switches · Mode S and Mode 5 · +12 VDC

ISO 9001:2015
IPC-A-610 Class 3
ITAR Registered

The PA1123 is a dual 2,800 W pulsed power amplifier for IFF interrogation at 1030 MHz, with a built-in T/R switch on each channel. Its two independent channels, Sum and SLS, each have their own isolator, T/R switch, output filter and output coupler, and it supports all IFF modes, including long Mode S and Mode 5.

Built-in monitoring checks the input, output and reflected RF pulses on a pulse-by-pulse basis. Gain levels automatically, and the amplifier protects itself against excessive duty cycle and pulse width. The output isolators let it operate into a 10:1 VSWR without damage, and it is rated for altitudes up to 50,000 ft. The unit runs from a single +12 VDC supply with forced-air cooling.

The PA1105 is a 1,200 W version, and the PA1138 a low-power version. The PA1033 is a single-channel 3,200 W or 4,000 W amplifier.

Features

Two independent channels, Sum and SLS, each with its own T/R switch
2,800 W per channel
Supports all IFF modes, including long Mode S and Mode 5
Pulse-by-pulse monitoring of input, output and reflected RF
Automatic gain leveling, with Sum/SLS gain tracking within ±0.25 dB
Duty cycle and pulse width protection, with output isolators
Over-voltage and over-current protected power supplies
Operates into 10:1 VSWR without damage
Harmonics -80 dBc maximum (2nd and 3rd), -100 dBc maximum (4th–12th)
Limiter-protected 1090 MHz receive ports
Single +12 VDC supply, forced-air cooled

Specifications

Frequency Range: 1030 ± 8 MHz transmit; 1090 ± 8 MHz receive
Channels: Two, Sum and SLS, each with a T/R switch
Operation Mode: Class AB; supports all IFF modes, including long Mode S and Mode 5
RF Output Power: +64.5 dBm (2,800 W) minimum at 2.1% duty cycle
RF Output Power Range: +44.5 to +64.5 dBm minimum at P1dB
Gain: 61.5 ± 0.5 dB
Gain Leveling: Automatic, settling within 1 s maximum
Sum/SLS Gain Tracking: ±0.25 dB maximum
RF Input VSWR: 1.3:1 maximum
RF Input Modulation: RF pulse, arbitrary phase modulation 15 MHz at 3 dB maximum; AM 30 dB maximum
Pulse Width: 32 µs maximum
Duty Cycle, Long-Term Average: Sum 1.65%, SLS 0.07% minimum; Mode S: Sum 2.1%, SLS 0.09% minimum
Duty Cycle, Short-Term: Sum 4.4%, SLS 0.2% over 72 ms; Mode S: Sum 7.14%, SLS 0.32% minimum over 5 ms
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
Harmonics: 2nd and 3rd -80 dBc maximum; 4th–12th -100 dBc maximum
T/R Switch: Hot-switch capable
Receiver Port Protection: 1090 MHz limiter, protected to +10 dBm maximum
Fault Indications: Thermal, mod gate, duty cycle, VSWR, gain, RF input power low, RF output power high, DC input voltage below threshold
Cooling: Forced air
Input Power: +12 VDC at 40 A maximum
Operating Temperature Range: -40 to +55 °C
Storage Temperature Range: -55 to +85 °C
Relative Humidity: 10% to 95% operating, 5% to 95% storage (non-condensing)
Altitude: Sea level to 50,000 ft
Weight: 24.8 lb
Connectors: TNC female antenna ports; SMA female RF ports; high-density D-sub power and control/status
Finish: MIL-DTL-53039 paint, FED-STD-595 color 383 green
Workmanship: IPC-A-610 Class 3

Resources

Dual IFF 2,800 W Amplifier Brochure

Custom Configurations

The 1030/1090 MHz 2.8 kW Dual IFF Pulsed Power Amplifier can be configured to your program’s requirements. Tell us the application’s needs and an engineer will follow up directly.

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