5-GHz RF chipset
Aimed at 5-GHz WLAN applications, the AR5000 chipset operates at speeds up to 54 Mbps (with a turbo option pushing the speed to 72 Mbps). Developed using a CMOS fabrication process, the two-chip solution features the AR5110 radio chip and the AR5210 digital chip with media access controller (MAC). The chipset is compliant with the IEEE 802.11a 5-GHz wireless LAN standard. Atheros Communications, www.atheros.com.

RF chipset
The ICM3004 IEEE 802.11a and HiperLAN/2 RF IEEE802.11a chipset is a four-IC solution for 5-GHz wireless LAN designs. The chipset is capable of supporting data rates up to 54 Mbps with OFDM and 64-QAM modulation. All four ICs are produced using SiGe technology and operate in 20-MHz wide channels. The ICs can support 12 channels for IEEE 802.11a and up to 18 channels for HiperLAN/2. innoCOMM wireless, www.innocomm.com.

802.11a solution
A two IC RF/baseband chipset solution has been unleashed for emerging IEEE 802.11a 5-GHz WLAN system designs. The new solutions include the R-M11a baseband modem and the R-RF5 UNII band radio transceiver. Manufactured in a 0.25-micron CMOS process, the baseband device is a 64-time COFDM physical layer (PHY) processor that sports a +2.5-V operating voltage and a 233-ball BGA package. The transceiver, on the other hand, is a half-duplex device that is developed using a 0.18-micron CMOS process and is supplied in a 68-pin MLF package. When combined together, the two ICs enable the development of WLAN products that achieve 54-Mbps data rates. Radiata, www.radiata.com.

Driver amplifier
The RF2367 driver amplifier has been unleashed for systems operating in the 2.4-GHz band, such as 802.11-/802.11b-compliant WLAN systems. The driver amp operates from a single +3-V power supply and spans the 150- to 2500-MHz frequency band. The IC also sports 21.5-dB gain, a +24-dBm output third-order intercept point (IP3), and a 22-dB noise figure. RF Micro Devices (RFMD), Inc., www.rfmd.com.

2.4-GHz power amp, detector chip
The ISL3984 2.4-GHz power amplifier and detector chip has been unleashed for incorporation into the company's PRISM 2.5 WLAN chipset. The chip offers +18-dBm RF typical output, a logarithmic power detect function with 15-dB dynamic range, and CMOS level compatible power up/down function on a single SiGe chip. The IC also sports a detector slope output voltage of 100mV/dB over a 15-dB dynamic range. The chip is available in 16-lead MLFP package or on tape and reel. Intersil, www.intersil.com.

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