Belgian Research Hub Imec Pioneers Microchip Breakthrough for Next-Generation 6G Networks
Leuven, Friday 12 June 2026
On 11 June 2026, Imec successfully integrated advanced microchips onto standard silicon, achieving a 100-fold density increase to power next-generation 6G telecommunications and high-frequency radar systems.
Advancing Heterogeneous Integration
On 11 June 2026, Imec unveiled a system-level platform that fundamentally evolves its 300-millimetre (mm) radio frequency (RF) silicon interposer [1]. By heterogeneously integrating III-V chiplets—comprising advanced materials such as indium phosphide (InP), gallium arsenide (GaAs), and gallium nitride (GaN)—onto standard silicon CMOS, the research hub has bridged a critical gap in semiconductor manufacturing [1][2]. The cornerstone of this achievement is a novel metal-insulator-metal capacitor (MIMCAP) architecture [1]. Utilising a high-k aluminium-hafnium-oxide dielectric paired with three-dimensional oxide-stud structures in the back-end-of-line (BEOL), this design delivers a remarkable 10-to-100-fold increase in capacitance density compared to traditional on-chip capacitors [1][2]. According to Xiao Sun, a principal member of technical staff at Imec, offloading these passive components onto the RF silicon interposer is a vital lever for reducing both the footprint and the production cost of III-V chiplets [1][2].
Bolstering Europe’s Strategic Autonomy
Imec’s milestone does not exist in a vacuum; it is a critical node in a broader European initiative to secure strategic autonomy in the global semiconductor value chain. Supported by the European Chips Act, which was approved by the European Parliament in February 2023 to unlock €43 billion in funding, the continent is aggressively fortifying its technological sovereignty [5]. The Belgian research centre frequently collaborates with regional heavyweights, including the Dutch assembly equipment specialist BE Semiconductor Industries (Besi) and lithography leader ASML [3]. While European equipment manufacturers like ASML and ASM International, alongside integrated photonics ecosystems such as the Netherlands-based PhotonDelta, provide the foundational hardware and light-based technologies required for next-generation chips [GPT], Imec’s applied research drives the architectural innovations that make these advanced machines indispensable to global foundries.
Meeting the Exponential Demand of AI and Data Centres
The push for denser, more efficient chiplet integration is largely driven by the insatiable compute demands of artificial intelligence (AI). Data centre AI workloads are projected to increase by a staggering factor of 50 by 2028 [5]. To accommodate this, interconnect speeds, which have been doubling every 18 months from a baseline of 2 gigabits per second (Gbps) in 2018, are expected to reach 64 Gbps in 2026 [5]. The electronic design automation (EDA) sector, dominated by firms like Synopsys and Cadence, is pivoting heavily towards AI-driven design to manage this complexity [5]. In 2022, combined R&D investments for these two EDA leaders reached $2.99 billion, representing roughly 34% of their revenues, highlighting the immense capital required to sustain innovation [5]. Looking at the broader industry ecosystem, total semiconductor R&D spending across 24 analysed companies rose by 16% to $63.8 billion in 2022, indicating a previous baseline of approximately 55 billion before the recent surge [5].