GaN small-form-factor power amplifier to replace TWTs and microwave power modules introduced by Comtech PST

Sept. 21, 2023
RF gallium nitride (GaN) amplifier is for communications, electronic warfare (EW), and radar transmitters where space, cooling, and power are limited.

MELVILLE, N.Y. – Comtech PST Corp. in Melville, N.Y., is introducing the model BME69189-100 small-form-factor solid-state power amplifier module for replacing traveling wave tubes (TWTs) and microwave power modules (MPMs) in legacy aerospace and defense electronics.

The integrated RF gallium nitride (GaN) model BME69189-100 provides 6 to 18 GHz at 100 Watts, and is for communications, electronic warfare (EW), and radar transmitter systems where space, cooling, and power are limited.

The RF GaN solid-state power amplifier module offers ultra wideband operation; full power across the entire bandwidth; is rugged and reliable; is compact and lightweight; offers low harmonic distortion; has low-voltage operation; tolerates soft failure with graceful degradation; offers integrated RF power reporting; and operates with 28- or 270-volt DC input.

Related: Gallium nitride (GaN) RF and microwave amplifier for communications applications introduced by Empower RF

The power electronics devices offers AB linear operation; maximum input and output voltage standing wave ratio (VSWR) of 2.0 to 1; will output power into 2:1 load of more than 70 Watts; offers over-current fault built-in test; operates at less than 30 Watts DC and standby power; offers typical efficiency of 10 percent; and uses SMA Female field replaceable connectors for input and output.

These power modules operate at baseplate temperatures from -40 to 75 degrees Celsius; resist the effects of shock and vibration per MIL-STD-810F; measure 8 by 6 by 2.5 inches; and weigh 5.5 pounds.

For more information contact Comtech PST online at

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