“U.S. Army Pfc. Robert Pearl, left, and Spc. Atlee Steever, both with 1st Battalion 43rd Air Defense Artillery, power up a Patriot surface-to-air missile system at an undisclosed location in Southwest Asia, Aug. 29, 2009. (U.S. Air Force photo by Staff Sgt. Robert Barney) (Photo Credit: U.S. Army),” accessed June 25, 2018, https://www.army.mil/article/134035/aps_5_partners_with_3_43_ada_for_patriot_missile_system_test Picture featured in Chief Warrant Officer 2 Michael Bradshaw, Army Field Support Battalion-Qatar, “APS-5 Partners with 3-43 ADA for Patriot Missile System Test,” September 19, 2014, accessed June 25, 2018, https://www.army.mil/article/134035/aps_5_partners_with_3_43_ada_for_patriot_missile_system_test.

From February 17-21, at the International Defence Exhibition & Conference (IDEX) 2019 in Abu Dhabi, the United States completed three Patriot Guidance Enhanced Missile-Tactical Ballistic Missile (GEM-T) test launches with a gallium nitride (GaN) transmitter. The new solid-state GaN transmitter does not require additional cooling, unlike the conventional traveling-wave tube (TWT) design, and is able to guide the GEM-T in flight in more demanding conditions. The first GaN-based GEM-T tests were conducting in December 2018, and multiple additional flight tests have been conducted leading up to IDEX 2019.

Related Links:

IDEX 2019: Patriot GEM-T missile with GaN completes flight tests, IHS Jane’s
Raytheon supplying technology for GEM-T, the first missile to harness GaN, Semiconductor Today