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SiGe power module eyes 802.11a-compliant devices

Posted: 19 Aug 2004 ?? ?Print Version ?Bookmark and Share

Keywords:sige semiconductor? power amplifier module? 802.11a? rangecharger? se2534a?

SiGe Semiconductor Inc. has unveiled a new 5GHz power amplifier module for access points, PCMCIA cards, laptop computers and other client devices compliant to the 802.11a WLAN standard.

Based on the company's integrated, high-performance power amplifier architecture, the RangeCharger SE2534A delivers a solution that simplifies design and reduces cost of next-generation WLAN systems. It incorporates a linear three-stage power amplifier, power detector, analog biasing and inter-stage matching circuitry into a matched 5-by-5mm chip-scale module.

"Our new power amplifier is generating significant interest among Wi-Fi system manufacturers, particularly in the Asia-Pacific region," shared Andrew Parolin, director of wireless power amplifiers at SiGe. "Many of these manufacturers are using our 2.4GHz power amplifiers for the 802.11b/g RF chains in their dual-band solutions. The addition of the SE2534A to SiGe's existing 5GHz product line means manufacturers can easily migrate their 5GHz RF chains to our solution, without a board layout change."

The SE2534A offers high linear power, capable of 17.5dBm output power with an error vector magnitude (EVM) of less than three percent. It improves packet error rates for optimal data throughput and transmission range, which ensures that Wi-Fi products can maintain reliable, high-performance connections over longer distances.

Additionally, the company added, the SE2534A further improves performance with an integrated power detector that solves the challenges associated with OFDM signals. The power detector adjusts the operating point to accommodate the peak-to-average power ratio and reduces power consumption accordingly, thus saving power while maintaining performance. Consuming 160mA for 17.5dBm output power, the SE2534A is ideal for WLAN applications.

The new device is supplied in an industry-standard LGA package that is pin-to-pin compatible with alternative 802.11a power amplifiers. SiGe said that the high integration of the SE2534A allows manufacturers to quickly realize savings by using the product as a drop-in replacement in their cost-reduction re-designs.

The SE2534A is available for $1.93 in 100,000-unit orders.

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