As 5G technology continues to reshape digital connectivity worldwide, its benefits are hard to ignore lightning-fast download speeds, seamless video streaming, and ultra-reliable connections. Yet, beneath the surface of this technological leap lies a critical drawback: enormous energy consumption. With each 5G base station consuming as much power as 73 U.S. households, researchers have been under growing pressure to find a more sustainable solution.
Now, a breakthrough at the University of Notre Dame may change the game entirely.
5G infrastructure, while revolutionary, is notoriously energy-intensive. Its advanced architecture using massive multiple-input multiple-output (MIMO) systems and higher frequency bands demands significantly more power than previous generations like 4G LTE.
This has raised serious concerns about the environmental and economic impact of large-scale 5G deployment. With millions of base stations needed worldwide, energy usage could reach unsustainable levels, especially in areas with limited electrical infrastructure or where green energy is a priority.
Recognizing this critical challenge, researchers at Notre Dame’s Department of Electrical Engineering, in partnership with the U.S. Army, have unveiled a groundbreaking solution: a 5G antenna that uses less than 10% of the power consumed by current systems—without sacrificing performance.
The Visionary Behind the Project
The innovative project is spearheaded by Dr. Jonathan Chisum, an associate professor at Notre Dame and a leading member of the university’s Wireless Institute. With funding from the U.S. Army, Chisum and his team sought to develop an antenna that could be compact, efficient, and adaptable across a wide range of frequencies used in global 5G deployments.
The result is a uniquely designed antenna leveraging a material known as an artificial dielectric, developed using cutting-edge 3D printing techniques.
At the core of the new antenna’s performance is its gyroid structure, a complex, three-dimensional pattern known for its strength and minimal material use. This intricate design helps guide electromagnetic waves with remarkable precision and minimal energy loss.
This material forms the foundation of a Gradient Index (GRIN) lens antenna, a concept first introduced over a century ago but never before applied so effectively to high-frequency, wideband wireless communication.
Traditional 5G systems require multiple antennas, each handling different frequency bands, often accompanied by power-hungry chips. The Notre Dame design simplifies this by creating a single wideband antenna that can seamlessly operate across all 5G frequencies—a technical milestone in antenna engineering.
While this technology has enormous commercial potential, it’s especially valuable to the U.S. Army, which is increasingly relying on 5G for secure communication, logistics tracking, and soldier health monitoring.
Modern military operations require mobility, flexibility, and energy efficiency particularly in remote environments where power supplies are limited. The Notre Dame antenna meets these criteria: it’s small, lightweight, and highly efficient, making it ideal for deployment in the field.
Moreover, since global 5G standards vary by region, military equipment must operate across multiple frequency bands. This new antenna provides the necessary versatility without the need for bulky or power-draining equipment.
The research team has already created a fully functioning prototype, built over an intensive 100-hour 3D printing process. Their next step is to refine the manufacturing pipeline, aiming to make the antenna cheaper, faster, and scalable for mass production.
Notre Dame is working with two strategic partners to accelerate this process:
- Cheshir Industries, co-founded by Notre Dame alumni, will lead the development of antenna arrays.
- Fortify, a 3D printing and RF design company, brings expertise in composite materials and complex manufacturing.
Together, these partnerships aim to bridge the gap between lab innovation and real-world deployment—whether for military operations or commercial 5G expansion.
Solving the 5G Rollout Bottleneck
Globally, telecom companies have faced high costs and slowing deployment rates due to the financial and energy burdens of 5G infrastructure. The Notre Dame antenna could be the disruptive solution the industry needs.
By dramatically reducing power consumption and hardware complexity, this new design could lower operational costs, make deployment viable in underserved regions, and extend 5G’s benefits to more people—without contributing to climate strain.
Operators may now find it easier to invest in expanding their networks, especially in rural or off-grid areas, thanks to this low-cost, low-power antenna system.
A More Sustainable 5G Future
What started as a high-performance research project for military communication has the potential to redefine global wireless standards. With energy-efficient antennas like the one developed at Notre Dame, the promise of 5G can be fulfilled without environmental compromise.
As the team prepares for field trials and potential commercialization, the wireless industry and the world may be on the cusp of a more mobile, sustainable, and inclusive 5G future.
