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Wi-Fi 6 RF front ends combine functions

By Martin Rowe | August 31, 2021

Qorvo QFP4526 and QFP4568 block diagram.

Qorvo QFP4526 and QFP4568 block diagram.

The low-power QFP4526 and high-power QFP4568 bring switches, filters, and amplifiers to Wi-Fi 8 (802.11ax) designs.

Wi-Fi 6 (IEEE 802.11ax) access points, routers, gateways, customer-premise devices, and IoT devices need amplifiers to boost signal power to its final levels. The QFP4526 and QFP4568 front-end modules from Qorvo operate at 3.7 V and 5 V power supplies, respectively. A SPDT switch, filters that remove second and third harmonics as well as reject 2.4 GHz signals in the local area, and a low-noise amplifier (LNA) complete the device.

The table compares specs for the two devices.

QPF4526 QPF4568
FMIN (GHz) 5.15 5.15
FMAX (GHz) 5.85 5.925
VCC (V) 5 3.7
802.11ax POUT (dBm) 23.5 19
802.11ac EVM (dB) -35 -35
Current (mA) 319 240
Tx Gain (dB) 33 29.5
Rx Gain (dB) 14.5 12.5
Noise Figure (dB) 1.9 2.3
Bypass loss (dB) 8 3.7

 

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