NTN Planar Antenna Weight Reduced by 47% Through Advanced Composite Material Integration

Sharp, the National Institute of Information and Communications Technology (NICT), Mitsubishi Chemical, and TechLab announced on June 17 that they have successfully reduced the weight of an NTN planar antenna by 47%. The development represents a notable advancement in non-terrestrial network technology, which relies on satellites and unmanned aerial platforms to provide communication coverage across regions that are difficult to serve using conventional terrestrial infrastructure. These networks are increasingly being evaluated for applications requiring uninterrupted connectivity across large geographic areas.

Role of Non-Terrestrial Networks in Future Connectivity

Non-terrestrial networks (NTN) are designed to extend communication services to locations where ground-based network coverage is limited or unavailable. By utilizing satellites and aerial platforms operating in the sky or space, NTN systems can support communications in mountainous regions, offshore environments, and remote islands. The technology is gaining industry attention because it enables real-time communication capabilities for emerging applications such as autonomous driving, drone-based delivery services, and maritime operations where reliable connectivity is essential.

Advanced Composite Material Enables Significant Weight Reduction

The participating organizations achieved the weight reduction by integrating a carbon fiber reinforced plastic heat dissipation device into the planar antenna architecture. This thermal management component incorporates a newly developed composite material that combines carbon fiber prepreg with graphite sheets. The resulting structure delivers both lightweight characteristics and high thermal conductivity, allowing effective heat dissipation while minimizing overall antenna mass. The integration of this advanced material contributed directly to the substantial 47% reduction in antenna weight.

Key Development Highlights

• 47% reduction in NTN planar antenna weight achieved.
• Development completed through collaboration among four organizations.
• New composite material combines carbon fiber prepreg and graphite sheets.
• Material provides lightweight construction and high thermal conductivity.
• Technology supports satellite and aerial communication network applications.
• Potential use cases include autonomous driving, drone delivery, and maritime communications.

Project Overview

The achievement highlights how advanced materials engineering can improve the performance and practicality of NTN communication hardware. As demand grows for seamless connectivity across remote and mobile environments, lightweight and thermally efficient antenna systems are expected to play an important role in supporting next-generation communication networks and mobility applications.

Frequently Asked Questions

What is an NTN planar antenna and why is it important?
An NTN planar antenna is a communication antenna designed for non-terrestrial network applications that use satellites and aerial platforms to provide connectivity beyond conventional ground networks. These antennas are important because they enable communication services in remote, mountainous, maritime, and isolated regions where terrestrial infrastructure may not be available. They also support emerging use cases such as autonomous driving, drone delivery, and connected mobility applications that require reliable, wide-area communication coverage.

How was the 47% weight reduction achieved in the NTN planar antenna?
The 47% reduction was achieved by integrating a carbon fiber reinforced plastic heat dissipation device into the antenna design. This device utilizes a newly developed composite material that combines carbon fiber prepreg with graphite sheets. The combination delivers high thermal conductivity while maintaining a lightweight structure, allowing efficient heat management without adding excessive mass. The innovation significantly reduces antenna weight while preserving the performance characteristics needed for non-terrestrial communication systems.