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RF/Microwave  

Tiny front-end solution for Wi-Fi reduces power

Posted: 10 May 2007     Print Version  Bookmark and Share

Keywords:Wi-Fi front-end  RF Array RWF111  embedded Wi-Fi portables 

RF Arrays has announced ultra-compact front-end solution for Wi-Fi systems. Available in a 3-by-3mm package, the company claims RWF111 to be the world's smallest front-end solution. The power-efficient solution delivers performance for both power and low noise amplifier and antenna switch and an external component count of just two bypass capacitors.

The device addresses the growing demand for embedded Wi-Fi capability in electronic equipment where board space is at a premium and power consumption must be minimised. Target devices include PDAs, VoWi-Fi handsets, cameras, cellular handsets, computer peripherals and automotive devices.

"As Wi-Fi technology is becoming ubiquitous, more devices are eyed to include Wi-Fi connectivity in the same form factor," said Rupert Prince, executive VP, RF Arrays. "This is putting pressure on the design community in terms of board space and power budget. RWF111 provides an effective solution for mobile electronics when adding Wi-Fi connectivity. With this new front-end device, RF Arrays is enabling OEMs to embed Wi-Fi in a series of challenging new applications while simultaneously shrinking form factors, extending battery life and meeting aggressive cost targets."

The ultra-compact front-end features a power amplifier with a current draw of less than 100mA while transmitting 802.11g signal at 15dBm output with an EVM of more than 4 per cent. The MMIC includes a high gain, very low noise LNA which will greatly improve the link budget in most systems (LNA gain=15dB, NF<1dB), as well as a power detector and biasing circuitry in a miniature 16-pin 3-by-3-by-0.5mm QFN package. The FEM is fully matched internally to a 50Ω output and input impedance.

RWF111 is currently in production. Pricing starts at Rs.46.50 ($1.10) for 10,000-unit quantities.




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