The dB-3758 is an integrated pulsed microwave power module (MPM) operating in the X-Band providing 1000 Watts peak output power at a duty cycle of 6%. The RF signal path consists of a solid PIN diode modulator, solid state driver amplifier and a mini-TWT. The power supply topology uses proprietary low-noise, high-efficiency designs to operate the RF signal path. A highly stable, solid state modulator is used for TWT grid modulation. Synchronization of power supply switching frequency with a radar system clock and blanking during the pulse are two unique techniques used in this unit to make this suitable for extremely low phase noise radar transmitter applications. The dB-3758 has several additional features such as VSWR protection, remote interface with RS-422 and integrated forced air cooling. This MPM is designed to meet military airborne environments and has been used in military manned and unmanned platforms.
Parameter
Specification
Frequency Range
2.0 – 18.0 GHz
Output Power (CW, coolant at 20°C)
150 W (2–4 GHz)200 W (4–9 GHz)150 W (9–16 GHz)100 W (16–18 GHz)
Small Signal Gain
≥ 50 dB
RF Input Power for Saturation
0 ± 1 dBm
Duty Cycle
100% (Continuous Wave)
Input VSWR
≤ 2.0 : 1
Output VSWR
≤ 2.0 : 1
Load VSWR (Full Spec Compliance)
≤ 1.5 : 1
Load VSWR (No Damage)
≤ 2.5 : 1
Prime Input Voltage
28 VDC / 270 VDC / 3 Phase 400 Hz / 60 Hz
Power Consumption
1400 W max (1300 W typical)
Prime Power
1300 W typical
Interface Control
RS-485
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