Summary:
Penn engineers have developed a short filter using YIG content that can unlock the 7-24 GHz FR3 band, which is a major frequency range for future 6G wireless communication.
The electromagnetic spectrum is tightly regulated, and only a small part – 600 MHz and 6 GHz – is currently used for wireless such as 4G and 5G. But the newly opened FR3 band (7-24 GHz) can be important for 6G. To use it, engineers require compact filters that can switch between frequencies.
Pen researchers led by Troy Olsson have created a quarter-shaped YIG-based filter which is 10x small compared to existing models and can-do tunes in a constant frequency range. This tuneability means that the equipment requires low filter, which saves space and electricity.
Innovation Yttrium is powered by Iron Garnet (YIG), a magnetic material that transfers frequency when exposed to a magnetic field. This allows a filter to replace dozens used in today’s smartphone.
While FR3 uses challenges – many frequencies are reserved by satellites or army – this filter provides a practical passage. It will be presented in 2024 IEEE MTT-S System, which marks a step towards more efficient and compact wireless technology for 6G.
