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Could Chinese hypersonic weapons tap Wi-fi bandwidth for communication?

  • Researchers in China say a simple antenna could allow home command to stay in touch with a missile travelling at Mach 5
  • No data from high-speed tests has been released but the team say ground experiment results show ‘remarkable’ performance

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Low frequency bandwidths usually reserved for smartphones and other consumer applications could be used to communicate with hypersonic craft. Photo: China Academy of Aerospace Aerodynamics
Stephen Chenin Beijing
An antenna developed by a Shanghai research team could open up low-cost communication bandwidths to hypersonic missiles travelling at five times the speed of sound or more.
The researchers said data from ground experiments suggested the unusually tolerant antenna achieved a “remarkable” performance at radio frequencies from 5.2 to 5.8 gigahertz – a relatively low frequency zone usually reserved for 5G smartphones, high speed Wi-fi routers and other consumer applications.

The team said the breakthrough was of military interest because radar and other communication devices carried by hypersonic vehicles would have a greater range while using less energy.

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In a paper in the January edition of Journal of Microwaves, the peer-reviewed publication run by the Chinese Institute of Electronics – China’s largest society for electronic engineers – the researchers said the low frequency would increase performance in target identification, positioning and other critical functions.

“[These hypersonic weapons] can greatly expand the battlefield space, enhance penetration and strike capabilities with a subversive impact on traditional defence methods, combat modes and countermeasures,” said the team led by Mao Junfa, professor with Shanghai Jiao Tong University’s school of electronic information and electrical engineering.

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China has developed numerous types of hypersonic weapons including the YJ-21 ship-launched missile that can hit a moving aircraft carrier fleet from 1,500km (932 miles) away at a speed too fast for most existing air defence systems.

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