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.
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.
The QPQ4701 is specified for high average input power levels up to +28 dBm and is rated for operation across an extended temperature range of –20 °C to +95 °C, making it suitable for thermally demanding networking equipment such as outdoor or high-duty-cycle access points.
This BAWplexer is a Surface Mount device available in a laminated package measuring 2.2 x 2 mm and is intended to simplify RF layout and reduce board area compared with discrete filter and diplexer implementations. Qorvo describes the QPQ4701 for use in single-antenna dual-band Wi-Fi architectures, particularly in systems requiring coexistence with LTE or 5G radios.
