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On-Demand Webinar:

"Ultra" Good Filtering for Today's Challenging Wi-Fi Networks

By using Qualcomm small sized and high radio frequency (rf) selective acoustic filters available today, designers need the best filter performance for their challenging Wi-Fi 6E / 7 systems. 5G coexistence is a major concern in designing Wi-Fi radio systems operating at 2.4 GHz, 5 GHz and 6 GHz and they require compact rf filters with low insertion loss and high out of band rejections.  Qualcomm has a comprehensive line of acoustic filtering for all Wi-Fi and cellular applications.

Originally presented: December 1, 2022
Duration: 1 hour
Presented by:


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 4x4 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


Cliff Zatz, Director, Product Marketing, RFFE, Qualcomm Inc

Cliff Zatz is an engineer and marketing professional with over 35 years of experience in passive components with a significant focus in acoustic filtering for RF. He began his career at Siemens which evolved into what is now RF360 part of Qualcomm. Zatz received his education in electrical engineering technology from Trenton State College in New Jersey, now widely recognized as TCNJ. His talents range throughout engineering, business management and strategic marketing. His technical expertise ranges from championing new products including diplexers and modules and is now viewed as a technical expert in the wide and ever-changing world of Wi-Fi and the internet of things. His leadership, creativity and innovative solutions maintain RF360 as part of Qualcomm on the cutting edge and a key supplier to the RF world.