India’s next-generation Virupaksha AESA Radar, developed for the Su-30MKI upgrade program, represents a major leap in airborne sensor capability. At its core lies a high-density architecture built around approximately 2,400 Transmit-Receive Modules (TRMs)—placing it among the most powerful fighter radars currently under development.
Core Intelligence
- Entity: FermionIC Design — Indian semiconductor startup
- Achievement: Indigenous chips meet global benchmarks for GaN-based AESA radar systems
- Application: Integration into the Virupaksha AESA radar for the Su-30MKI “Super Sukhoi” upgrade
What makes this radar particularly significant is its reliance on Gallium Nitride (GaN) on Silicon semiconductor technology, a substantial upgrade over older Gallium Arsenide (GaAs)-based systems. GaN offers higher power efficiency, better thermal tolerance, and greater detection range, enabling the radar to track multiple targets at longer distances while maintaining resistance to electronic warfare.
FermionIC Design’s chips are being qualified to power these TRMs, effectively placing an Indian startup at the center of a high-end defense electronics ecosystem that has traditionally been dominated by a handful of global players.
Can Indian-made semiconductors replace global benchmarks in defense?
This is the key question driving attention toward FermionIC’s breakthrough—and early indicators suggest the answer is increasingly leaning toward “yes.”
According to company founder Gautam Kumar Singh, the chips have successfully undergone rigorous validation and testing, meeting or exceeding performance benchmarks typically associated with Tier-1 global semiconductor suppliers. This is a critical milestone, as defense-grade chips must meet extreme reliability standards under harsh operational conditions, including high temperatures, vibration, and electronic interference.
Unlike commercial semiconductors, radar chips require consistent high-power output and long operational lifespans. Achieving this level of performance domestically signals that India is no longer just assembling defense systems—but beginning to control the most sensitive layer of the value chain: core semiconductor design and fabrication alignment.
Why the FermionIC Qualification is a Strategic Shift for the IAF
The qualification of FermionIC’s chips is more than just a technical achievement—it represents a structural shift in how India approaches defense procurement and capability building.
For decades, critical components such as radar semiconductors were sourced from foreign vendors, creating dependencies that could become vulnerabilities during geopolitical crises. By integrating indigenously designed GaN chips into a frontline fighter radar, India moves closer to achieving a fully sovereign supply chain for advanced military electronics.
This has direct implications for the Indian Air Force’s Su-30MKI fleet, which forms the backbone of its combat capability. The Virupaksha upgrade—combined with indigenous semiconductors—ensures that future enhancements, maintenance, and scaling are no longer constrained by external supply disruptions or export restrictions.
Beyond performance and supply chain independence, one of the most critical advantages of using FermionIC’s indigenous chips lies in secure datalink communication. Modern AESA radars like Virupaksha are not just sensors—they are integral nodes in a network-centric warfare environment, constantly exchanging encrypted data with other aircraft, airborne warning systems, and ground stations.
By using Indian-designed semiconductor chips, the risk of hidden vulnerabilities, backdoors, or external supply chain compromises is significantly reduced. This ensures that sensitive mission data, targeting information, and real-time battlefield updates remain fully under national control. In contrast to foreign-sourced components, which may carry inherent trust and verification challenges, an indigenous chip architecture provides a higher degree of cryptographic assurance and system-level security, making it a decisive advantage for frontline fighters like the Su-30MKI.
GaN vs GaAs: The Real Technical Breakthrough
A crucial differentiator in this story is the transition from GaAs (Gallium Arsenide) to GaN (Gallium Nitride) technology.
- GaAs (Legacy Systems): Lower efficiency, higher heat generation, limited power scaling
- GaN (Modern Systems): Higher power density, improved thermal performance, longer operational life
This shift allows radars like Virupaksha to operate at higher power levels without compromising reliability, directly translating into longer detection ranges, better target resolution, and improved survivability in contested environments.
By successfully developing GaN-based chips domestically, FermionIC has effectively entered a technological tier that only a few countries currently occupy.
The integration of FermionIC’s indigenous chips into the Virupaksha AESA radar marks a defining moment at the intersection of India’s defense modernization and semiconductor ambitions. It demonstrates that the country is not only catching up—but beginning to compete at the highest levels of advanced military technology.
As the Su-30MKI “Super Sukhoi” upgrade progresses, this development could serve as a blueprint for future programs—where Indian-designed semiconductors power Indian-built defense systems, reducing reliance on external suppliers and strengthening long-term strategic autonomy.
