GaN MMIC

Gallium Nitride Monolithic Microwave Integrated Circuits (GaN MMICs) are integrated circuits built on Gallium Nitride — a wide-bandgap (3.4 eV) compound semiconductor — operating at microwave frequencies (~300 MHz to 300 GHz). They are the active elements in AESA radars, electronic warfare suites, secure satellite communications, naval radars, and 5G/6G base stations. India's Defence Research and Development Organisation (DRDO), through its Solid State Physics Laboratory (SSPL), Delhi, indigenously developed GaN MMICs by May 2026 — making India the 7th nation globally to master GaN MMIC technology, after the USA, France, Russia, Germany, South Korea, and China. The breakthrough is strategically significant because France's Thales had declined to transfer GaN MMIC technology under the Rafale offset clause (2016 deal), forcing indigenous development. GaN provides ~3x the power efficiency of silicon at RF/microwave frequencies and ~10x faster switching, with thermal stability up to 1000°C in pulsed conditions.

• 1 GaN bandgap: 3.4 eV (vs Silicon's 1.1 eV; Gallium Arsenide's 1.4 eV)
• 2 Developer: DRDO Solid State Physics Laboratory (SSPL), Delhi
• 3 Breakthrough announced: May 26-27, 2026
• 4 7 nations club: USA, France, Russia, Germany, South Korea, China, India
• 5 Backstory: France's Thales refused GaN transfer under 2016 Rafale offset
• 6 Applications: AESA radars (Tejas Mk1A), EW suites, satellite comms, 5G/6G
• 7 Power efficiency: ~3x silicon for RF/microwave
• 8 Switching speed: 10x faster than silicon
• 9 Other wide-bandgap semiconductor: Silicon Carbide (SiC, ~3.3 eV)

The DRDO-SSPL GaN MMIC breakthrough, announced on May 26-27, 2026, closes a critical gap in India's defence electronics value chain — enabling indigenous AESA radars without dependence on French/American/Russian RF chips.