NTT and Okayama University in Japan have developed a gigahertz ultrasonic circuit that utilizes the principle of topology. This innovative development promises to revolutionize the design and performance of ultrasonic filters used in smartphones and IoT devices.
The new technology employs a special material called ultrasonic topological phononic crystal, created using an artificial elastic structure with periodic arrays of microscopic holes. This unique design allows ultrasonic waves to propagate stably through complex, microscopic channels without backscattering, a problem that plagues conventional ultrasonic circuits.
The implications of this breakthrough are significant for the wireless communication industry. By solving the issue of reflection in folded small waveguide structures, the researchers have paved the way for the miniaturization and enhanced performance of ultrasonic filters. This advancement has applications for the evolving needs of 5G networks and the growing IoT ecosystem, where efficient signal processing and minimal interference are paramount.
The research team successfully demonstrated a ring-waveguide coupled structure that reduced the space required by conventional technology to less than 1/100, while also showcasing the basic operation of a gigahertz ultrasonic filter. This achievement marks a significant step towards more compact, integrated, and multifunctional ultrasonic filters for next-generation wireless communication devices.
Key Points:
- World’s first gigahertz ultrasonic circuit using topological principles
- Enables stable ultrasonic wave propagation without backscattering Potential for miniaturization of ultrasonic filters to less than 1/100 of current size
- Applications in smartphones, IoT devices, and 5G networks
- Developed using ultrasonic topological phononic crystal material
- Demonstrates successful operation of a compact gigahertz ultrasonic filter
- Expected to lead to more efficient and high-performance wireless communication devices
