Wireless communications

A new switchable radio frequency filter could help mobile devices stay compact, affordable while keeping up with the growing number of bands required by next-generation communication networks.

New acoustic filters could support faster future mobile communications by tapping into underused higher frequency bands, reducing congestion in existing channels.

Deploying many low-power, compact antenna nodes to handle cellular traffic can make wireless communication more reliable and adaptable

A more sensitive technique for determining user position could lead to improved location-based mobile services

Information theory shows the best way to share wireless spectrum securely

Demonstration of an energy-efficient, ultra-wide bandwidth radio will advance low-power, short-range wireless networks

A recently developed wireless heart sensor can continuously monitor and broadcast data for a week on a single battery charge

An innovative printed microwave antenna uses a shorting bridge to improve performance over an ultrawide range of frequencies