company blog about Brand New and Original Qorvo Supply QPF4550SR RF Front End: 5GHz Wi-Fi 6 Front End Module

Radio Frequency Front-End Modules (RFFE) play a critical role in wireless communication systems, responsible for processing the transmission and reception of radio frequency signals, directly impacting signal quality and communication performance. As a leading semiconductor company, Qorvo's products have extensive applications and a strong reputation in the radio frequency field. Mingjiada Electronics, as a professional electronic component distributor, is committed to providing customers with high-quality Qorvo products. The QPF4550SR is an integrated front-end module (FEM) specifically designed for Wi-Fi 6 (802.11ax) systems by Qorvo. The following is a detailed introduction to the product description, features, specifications, and applications of the QPF4550SR.

QPF4550SR Product Description
The QPF4550SR is a high-performance RF front-end module specifically designed for 5GHz Wi-Fi 6 devices. The module integrates a 5GHz power amplifier (PA), a single-pole double-throw switch (SP2T), and a bypassable low-noise amplifier (LNA), delivering exceptional RF performance. Its compact packaging design and integrated matching network significantly reduce layout area in applications, freeing up more space for other components, making it ideal for wireless communication devices that prioritise miniaturisation and high performance. The QPF4550SR's performance is optimised for a 5V power supply voltage, not only saving power consumption but also maintaining high linear output power and leading-edge throughput, ensuring efficient and stable operation of the device.

QPF4550SR Product Features
Highly Integrated: The QPF4550SR integrates a 5GHz power amplifier (PA), a single-pole double-throw switch (SP2T), and a bypassable low-noise amplifier (LNA) into a single device, simplifying design and enhancing system reliability and performance consistency.
Exceptional Performance:
High transmit gain: The QPF4550SR achieves a transmit gain of up to 30dB, effectively enhancing signal transmission strength and expanding the device's coverage range.
Low noise figure: The QPF4550SR features a noise figure as low as 2.1dB, enabling clearer capture of weak signals during reception and improving signal quality and reception sensitivity.
Excellent Receive Gain and Bypass Loss: The QPF4550SR offers a receive gain of 13.5dB and a bypass loss of 8dB, further improving signal reception and transmission efficiency.
2.4GHz Suppression: The QPF4550SR provides 30dB of 2.4GHz suppression in the receive path, effectively preventing interference between frequency bands and ensuring stable operation of the 5GHz Wi-Fi 6 system.
Optimised design: The QPF4550SR is optimised for a 5V power supply voltage, balancing power consumption with high linear output power, maintaining leading throughput performance, and suitable for long-term stable operation.
Environmental compliance: The QPF4550SR complies with RoHS standards, is lead-free and halogen-free, meeting environmental requirements, and providing strong support for environmentally friendly electronic product design.

Specifications
Model: QPF4550SR
Package: 16-QFN (2.5x2.5mm), with a compact package size that makes it highly suitable for various miniaturised devices, facilitating layout and integration for designers.
RF Type: 802.11ax, Wi-Fi
Frequency Range: 5.15GHz to 5.925GHz, covering the 5GHz band for Wi-Fi 6 applications.
Operating Voltage: 5V, optimised voltage design ensures stable operation and performance at standard voltage levels.
Transmit Gain: 30dB, high gain ensures strong signal transmission capability.
Noise figure: 2.1dB, low noise figure ensures high-quality reception of signals.
Receive gain: 13.5dB, with 8dB bypass loss, improving signal reception efficiency and quality.
Output power and dynamic EVM:
+15dBm MCS11 HE160 -43dB dynamic EVM
+16dBm MCS11 HE80 -43dB dynamic EVM
+20.5dBm MCS9 VHT80 -35dB dynamic EVM
+24.5dBm MCS0 HT20 Compliant with spectrum mask
Characteristics: SP2T
Other Features:
Integrated on-chip-level filtering for second and third harmonics, and 2.4GHz suppression for DBDC operation.
Compliant with the 2011/65/EU RoHS Directive (Restriction of the use of certain hazardous substances in electrical and electronic equipment) and amended by the 2015/863/EU Directive.
Compatible with lead-free (maximum reflow temperature 260°C) and tin-lead (maximum reflow temperature 245°C) soldering processes.

Application Areas
The QPF4550SR is widely used in the following Wi-Fi 6 devices:
Wireless routers and access points
Residential gateway devices
Client devices (CPE)
Internet of Things (IoT) gateway solutions

The QPF4550SR's high integration and outstanding performance make it an ideal choice for Wi-Fi 6 system designs. Its compact size is particularly suitable for space-constrained portable device applications.

QPF4550SR Functional Block Diagram