“Ultra” Good Filtering for Today’s Challenging Wi-Fi Networks

Thursday, December 1, 2022


This webinar will describe how Wi-Fi and 5G cellular signals can coexist in new Wi-Fi 6E and Wi-Fi 7 systems by using Qualcomm® ultraBAW and Qualcomm® ultraSAW filters. With the ever-increasing 5G usage in the n77 (3300 MHz to 4200 MHz) and n79 (4400 MHz to 5000 MHz) bands and the close proximity of Wi-Fi 6E/7 (5.125 MHz to 7.125 MHz) bands there is a risk of interference between the different radios that can cause system underperformance.

Further, high Isolation between the 5 GHz high band (5.6 GHz) and low band (5.2 GHz) Wi-Fi ports as well as adjacent channel interference rejection or coexistence between the 5 GHz and 6 GHz bands is required. By designing-in compact, high rf selectivity Qualcomm ultraBAW and ultraSAW filters, designers can produce Wi-Fi systems that won’t interfere or be interfered from cellular systems.

Qualcomm ultraBAW and ultraSAW filters are small size, typically 1.4 mm x 1.1 mm, and have 50 ohm nominal input and output impedance requiring very little impedance matching (if any, at all) so they may be designed into systems easily. In current Wi-Fi 6E/7 systems, such as a 4×4 MIMO Tri-Band Access point, 12 high rf selective filters are required, thus more than ever component size is a factor in determining filter selection. Using compact Qualcomm filters, total footprint size is reduced by 40 times (63 vs 1.54 compared to ceramic rf filtering.

Key Takeaways

  • Understand the advantages of Qualcomm ultraBAW and UltraSAW filter technology that is used in Wi-Fi Systems
  • Explore the comprehensive available product filter portfolio for Wi-Fi 6E and Wi-Fi 7 applications
  • Analyze and comprehend real-time Wi-Fi 6E and Wi-Fi 7 designs
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