A 3.6GHz, 16mW ΣΔ DAC for a 802.11n / 802.16e transmitter with 30dB digital power control in 90nm CMOS
Edinburgh(2008)
Abstract
This paper presents a SigmaDelta DAC based transmitter (TX) baseband for 802.11n / 802.16e with channel filtering and gain control performed in the digital domain. The effect of circuit imperfections on TX EVM is analyzed for a robust line-up with gain control and the design of the high speed SigmaDelta modulator is described. The SigmaDelta DAC fabricated in a 90 nm CMOS process operates up to 3.6 GHz while drawing 16 mW from a 1.3 V supply.
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Key words
cmos integrated circuits,digital control,digital-analogue conversion,power control,sigma-delta modulation,wide area networks,wireless lan,cmos process,sigmadelta dac based transmitter,tx evm analysis,channel filtering,digital power control,frequency 3.6 ghz,gain control,power 16 mw,size 90 nm,voltage 1.3 v,noise,radio frequency,radio transmitters,baseband,modulation
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