DRDO’s Electronics and Radar Development Establishment (LRDE) which was in charge of the development of the indigenous Active electronically scanned array (AESA) radar has successfully concluded the program with major objectives of the program being achieved along with the completion of developmental trials with that program now moves towards production and development of derivates that will be used for indigenously developed fighter jet programs.

LRDE has confirmed that Uttam AESA radar is 95% indigenous, with only one imported subsystem that has a search range of over 100km and can track a range of 50 targets with the ability to engage 4 targets at once. Uttam Mk1 will be seen from 20th Tejas Mark IA fighter jet and will have 780 Transmitter and Receiver Modules (TRM).

LRDE already has manufactured a second derivate of the AESA radar to be used on the Tejas MkII program that will have 992 Transmitter and Receiver Modules (TRM) and will be the first to feature the groundbreaking antenna technology that will be mounted on a swashplate rotating repositioner that makes it possible to have a higher degree of search volume and a higher degree of look-angle around the nose of the aircraft.

LRDE-HAL is carrying out studies to develop a new scaled-up antenna that will be used with a more powerful power supply unit to be used on the Su-30MKI jets. IAF already has accepted the technical feasibility study proposal for the development of a new derivate for the Su-30MKI program and after approvals, LRDE-HAL is carrying out detailed technical studies that will ultimately lead to the development of a new derivate of the indigenously developed active electronically scanned array (AESA) radar with higher Transmitter and Receiver Modules (TRM).

For the 5th Generation AMCA program, LRDE is moving away from the present solid-state gallium arsenide (GaAs) technology to the latest Gallium Nitride (GaN) based technology that comes with superior heat dispersion for better cooling of the radar thus ensuring increased performance. GaN-based active electronically scanned array radar could search five times the volume as a similarly sized GaAs-based radar, or at a 50 percent greater range. TEDBF program will be getting a derivate of the GaN-based Fire control Radar that is under consideration for the AMCA program.

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