South Korean company Hanwha Systems has successfully developed an AESA radar for its fighter aircraft. The development of the domestically manufactured AESA radar is a response to the United States’ refusal to supply South Korea with the AESA radar used in its F-35 stealth aircraft.
The United States had objected to providing South Korea with key AESA radar technology, despite South Korea operating F-35 fighter jets.
Hanwha stated that the AESA radar underwent testing onboard the KF-21 aircraft to verify its performance.
It is worth noting that the AESA radar is the main avionics equipment for the KF-21 aircraft, directing the radar beam electronically through approximately 1,000 small transmit/receive units on the fighter’s antenna and adjusting the radio wave phase.