China’s J-20 stealth fighter’s radar leap credited to semiconductors expert Xu Xiangang

Shandong University says breakthroughs led by Professor Xu Xiangang have helped the Mighty Dragon triple its radar detection range

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The J-20, also known as the Mighty Dragon, is a twin-engine stealth fighter viewed as China’s answer to America’s F-22 “Raptor”. Photo: Handout

Published: 9:00am, 11 Jun 2025

China’s J-20 stealth fighter has tripled its radar detection range, thanks to semiconductor advancements over the past two decades led by Shandong University scientist Xu Xiangang, according to the university.

A silicon-carbide (SiC) semiconductor material developed by Xu’s team had powered a threefold increase in the detection range of phased array radar systems, allowing Chinese radars to swiftly detect enemies and gain the first-mover advantage, the university said on its social media page.

“From the J-20’s on-board systems to advanced weaponry, this ‘Chinese chip’ is crucial for national security,” the May 30 post said.

“It enhances the range of Chinese radars, improves missile accuracy and boosts the power of laser weapons, making it an indispensable ‘hardcore shield’ in defence technology.”

The J-20, also known as the Mighty Dragon, is a twin-engine stealth fighter viewed as China’s answer to America’s F-22 “Raptor”. It officially entered active service in March 2017.

Xu, who is dean of the university’s Institute of Novel Semiconductors, said it was important for researchers to address the country’s needs.

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