连接Q＆A：减少Wi-Fi干扰
September 16, 2019
Wi-Fi技术和趋势是我们的新博客系列，包括无线连接解决方案总监Qorvo的Tony Testa。每个月，托尼将提供关于最新的Wi-Fi设计技巧，趋势和创新解决方案的见解。
What are the main customer pain points regarding interference?
In the area of 2.4 GHz Wi-Fi, both interference and coexistence are prominent.
这主要是因为来自我们的蜂窝产品的许多周围信号，例如蓝牙®，无线扬声器，微波等。解决此干扰的唯一方法是使用RF滤波器技术。
How does Qorvo help customers solve these interferences?
我们的客户依靠服务质量来销售其产品。具有高质量服务的产品产生最大的收入（每个用户 - ARPU的平均收入），部分原则地通过降低服务呼叫，卡车卷和可能额外的硬件/软件解决方案来解决用户体验涉及的费用。例如，我们的一些数字媒体客户的制造和销售室内/户外无线扬声器。在远程和不间断的情况下，必须具有高质量的服务是必须的。必须抑制像蓝牙或蜂窝频带等相邻信号以减轻干扰。我们将客户指导客户使用我们的BandEdge和共存过滤器，无论是离散的形式和完全集成的前端模块，都可以解决问题。
What does Qorvo recommend to address customer application interference issues?
For 2.4 GHz, coexistence and bandedge filters are required to mitigate unwanted interference. Some of our go-to products we refer customers to are the885136bandedge filter and885128coexistence filter. These two discrete filter solutions provide low insertion loss, steep skirts and high attenuation in the out-of-band regions. The 885136 has up to 0.8 dB insertion loss and high attenuation/rejection at 2390 MHz, 2483.5 MHz, band 38/40/7 and 41. The 885128 displays a 1.3 typical insertion loss in the Wi-Fi band and bandedge as well as a high rejection in the LTE, band 7, 38, 41 and 40. We also provide fully integrated front-end solutions using LTE coexistence filtering and/or bandedge filtering, such as theQPF7221。This component provides a complete solution in a single front-end package for Wi-Fi 802.11b/g/n/ac/ax systems. With a small form factor of 3 x 4.5 mm and high transmit/receive gains, this front-end module incorporates a high-performance, temperature stable BAW filter. The BAW filter provides state-of-the-art LTE coexistence receive immunity for maximum Wi-Fi range and coverage. We've also recently added theQPF7219到我们的IFEMS家庭。它包括发送和接收802.11AX模块，该模块集成FCC BandEdge BAW滤波器，稳压器，发射和接收开关以及带有旁路的LNA。
What makes Qorvo coexistence and band-edge products different than other components in the marketplace?
关于bandedge过滤,我们目前的only company providing this type of Wi-Fi BAW filter. As for both bandedge and coexistence filtering, we offer these in discrete and fully integrated front-end modules. We recognize that Wi-Fi market products are becoming smaller and sleeker, which requires all components to be small. We use customer feedback and market information to drive product innovation, such as small form factors, longer Wi-Fi range and mitigation of out-of-band interference.
托尼的最终思想：Our customers expect products to be plug-and-play and work without extra design effort. This way, they can meet their tight schedules and easily pass regulatory certification. Integrating BAW filter technology in the RF front-end checks off these expectations for customers. Additionally, our filters resolve interference, and when customers place them in their small-sleek products, they can be assured they'll meet stringent design criteria when operating at temperature swings of – 40⁰ C to +105⁰ C, all thanks to our unique BAW technology.
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