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Pure-CMOS RF switch tweaked for 2.4GHz Wi-Fi/Bluetooth

Posted: 19 Jul 2013 ?? ?Print Version ?Bookmark and Share

Keywords:RFaxis? switch? WiFi? BlueTooth? smartphones?

RFaxis has started volume production of the RFX333, a single-pole triple-throw (SP3T) switch optimised for 2.4GHz Wi-Fi/Bluetooth chipsets. The RFX333 is developed and manufactured in a cost-effective bulk CMOS technology. It is pin-compatible with solutions that use more expensive Gallium Arsenide (GaAs) or Silicon-On-Insulator (SOI) processes.

"With Qualcomm's recent announcement of its RF360, the global RF industry is undoubtedly witnessing an accelerated acceptance of CMOS based RF front-end components including PAs and switches," commented RFaxis' CEO Mike Neshat.

"We saw GaAs pHEMT switches displaced by SOI on many platforms in the last couple of years. We are now offering our Wi-Fi SoC partners and ODM/OEM customers with pin-compatible, alternative RF switch solutions based on pure CMOS at a significantly reduced price. By adding RFX333 to our portfolio, RFaxis is rapidly becoming a one-stop shop for high-performance, and yet the most cost-effective RF solutions for wireless connectivity products, including complete RF Front-end ICs (RFeIC), high-power PAs and now switches," added Neshat.

The RFX333 is a single-pole, triple-throw (SP3T) antenna switch developed in bulk CMOS technology. The device is optimised for wireless applications requiring high linearity and low insertion loss, such as WLAN IEEE 802.11b/g/n and Bluetooth in the 2.4GHz frequency range. The RFX333 has simple and low-voltage CMOS control logic, and requires minimal external components. All DC-blocking capacitors are integrated on-chip to minimise PCB footprint. Assembled in an ultra-compact, low-profile 1.6x1.6x0.45mm 12-Pin Quad Flat No-Lead (QFN) package, the RFX333 provides an ideal RF switch solution for handset, smartphone, tablet and other mobile platforms.

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