Qorvo has added the QPQ4701 to its RF front-end portfolio, expanding its range of integrated diplexers for dual-band Wi-Fi systems. The device is a Bulk Acoustic Wave (BAW) – based diplexer (BAWplexer) designed to support simultaneous 2.4 GHz and 5 GHz Wi-Fi operation using a single antenna, targeting access points, routers, residential gateways, customer-premises equipment (CPE) and IoT devices.
The QPQ4701 operates over the frequency range of 2402 to 2482 MHz on the 2.4 GHz path and 5150 to 5735 MHz on the 5 GHz path, corresponding to Wi-Fi channels in the 2.4 GHz band and U-NII-1 through U-NII-3 bands in 5 GHz Wi-Fi deployments. The component integrates filtering and diplexing within a single laminate module, removing the need for external matching between filter sections.
What is a BAW Filter?
The 2.4 GHz signal path incorporates high near-band rejection to reduce interference from nearby LTE and 5G bands, including LTE bands B7, B38, B40 and B41. This allows concurrent operation of Wi-Fi and cellular radios in dense RF environments where high-power cellular transmissions can affect Wi-Fi sensitivity. The 5 GHz path is implemented as a low-loss bandpass filter optimized for wideband operation across U-NII-1 to U-NII-3 frequencies. This configuration supports typical 5 GHz Wi-Fi channel bandwidths while maintaining low insertion loss across the operating range.