| SiGe Semiconductor has released a trio of 802.11g RF front-end
modules with different power/performance trade-offs.
The SE2521A60 is aimed at PC cards and is capable of +19dBm
output power with an error vector magnitude (EVM) of less than
three per cent while operating in 802.11g mode, or +23dBm in
802.11b mode while meeting all ACPR requirements. The device
consumes 195mA in 802.11g mode.
The lower consumption A40 version is for embedded WLANs
including Wi-Fi VoIP phones, with figures of +18dBm at 150mA in
802.11g mode or +22dBm for 11b. A high power version, the A80, for
routers and access points provides +20dBm(11g) or +20dBm (11b).
Each device also integrates a power detector with 20dB of
dynamic range, and a digital enable control for transmitter on/off
control. The power detector boosts performance by minimising
mismatch to only 1.5 dB of variation over a 2:1 antenna mismatch,
said the firm.
www.sige.com | 
15:23 [16/10/2006] Post by