MIT Lincoln Laboratory Develops HoNi BAJR Antenna Using 95% Less Power to Counter Satellite Jamming
Updated
Updated · Interesting Engineering · Jun 8
MIT Lincoln Laboratory Develops HoNi BAJR Antenna Using 95% Less Power to Counter Satellite Jamming
2 articles · Updated · Interesting Engineering · Jun 8
Summary
MIT Lincoln Laboratory built a HoNi BAJR scanning reflectarray prototype for proliferated low-Earth-orbit satellites, aiming to keep U.S. military communications working during heavy electronic jamming.
The design steers and shapes beams with a reflective surface and separately fed antenna instead of amplifiers on every element, cutting estimated power use by about 95% and reducing size and hardware complexity.
Tests at the lab’s RF Systems Testing Facility showed wide-angle scanning and beam-splitting for multiple users with minimal signal loss, while broader interference-suppression zones delivered mixed early results.
Calibration is now the main technical hurdle because engineers still need precise ways to measure and correct signal distortions, which will determine beam steering accuracy and anti-jam performance.
The lab sees the antenna as a potential fit for future military constellations on power-limited spacecraft, especially in scheduled-beam missions and environments with persistent but less dynamic interference.
As new antennas guard U.S. satellites, are we prepared for the next generation of attacks they will provoke?
Can a reinvented 1960s technology solve the Pentagon's most modern challenge in orbital warfare?
MIT’s HoNi BAJR Reflectarray Antenna: A 95% Power Reduction Breakthrough for Secure, Resilient Satellite Networks
Overview
MIT Lincoln Laboratory has developed the HoNi BAJR prototype antenna, marking a major breakthrough in satellite communications. This new technology is designed to provide secure and reliable communications in space, especially as electronic warfare threats increase. HoNi BAJR stands out by offering strong anti-jamming capabilities while being much smaller, lighter, and more energy-efficient than traditional adaptive arrays, which require significant power and hardware. By reducing size, weight, power, and cost, HoNi BAJR addresses the critical need for resilient satellite links in contested environments, making it ideal for modern, power-limited satellite constellations.