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Carrier-grade  Wi-Fi switch delivers 50 times more isolation and 10 times better linearity

Carrier-grade Wi-Fi switch delivers 50 times more isolation and 10 times better linearity

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By eeNews Europe



“Mobile Experts’ research shows the number of carrier-grade Wi-Fi access points deployed has grown 40 percent this year alone," said Joe Madden, founder and principal analyst at Mobile Experts. "With the Wi-Fi market shift to dual-band 802.11ac support, we predict the market for RF suppliers – such as Peregrine – will grow even faster at a rate of 50 percent annually through 2016.”

The rising amount of cellular-data offload to Wi-Fi networks is significantly increasing the complexity of access-point radios. Most Wi-Fi access points now contain multiple radios in order to address the capacity demands of cellular data. Based on Peregrine’s UltraCMOS® technology, the PE42423 is the first in its class to offer 41 dB of port-to-port isolation at 6 GHz. This best-in-class isolation enables multi-radio access points to perform at peak levels without interference between the radios. Exceeding the stringent 802.11ac standard, the switch also offers 65 dBm of linearity to achieve higher data rates. In addition, UltraCMOS technology delivers equally high performance at either 3 V or 5 V, unlike gallium arsenide (GaAs) switches that experience severe performance degradation below 5 V. Peregrine’s switch gives networking-product designers the flexibility to operate at lower power supplies and reduce energy consumption.

The PE42423 is a single-pole double throw (SPDT) RF switch featuring low insertion loss of 0.8 dB at 2.4 GHz and 0.95 dB at 5.8 GHz, fast switching time of 500 ns and high ESD ratings of 3.0 kV HBM on all RF pins. The switch supports +1.8 V standard logic control. It provides stable RF performance over a power supply range between 2.3 V and 5.5 V. The packaging is RoHS compliant, 16-lead QFN and measures 3 x 3 mm.

The PE42423 UltraCMOS SPDT Wi-Fi RF switch covers 100 MHz to 6 GHz, supports 802.11 a/b/g/n/ac, operates between 2.3 V and 5.5 V and is +1.8 V control logic compatible. Isolation comes in at 47 dB at 2.4 GHz and 43 dB at 6 GHz.

The device offers high linearity across the supply range with IIP3 of 65 dBm and IIP2 of 120 dBm. It provides 38.5 dBm power at 2.4 GHz and 37 dBm power at 6 GHz.

www.psemi.com

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