DESIGN OF 2.4 GHZ CMOS DIRECT CONVERSION LNA AND MIXER COMBINATION FOR WIRLESS DATA LINK TRANSCEIVER.

ZHAO, D. ; OCONNOR, P.

Brookhaven National Laboratory

关键词: Communications;    Signal-To-Noise Ratio;    Data Transmission Systems;    Design;    99 General And Miscellaneous//Mathematics, Computing, And Information Science;   

DOI  :  10.2172/794023
RP-ID  :  BNL--69107
RP-ID  :  AC02-98CH10886
RP-ID  :  794023

美国|英语

来源: UNT Digital Library

【 摘 要 】

Three LNA and mixer combinations in 0.6{micro}m and 0.4{micro}m standard CMOS processes for direct-conversion receiver of 2.4GHz ISM band short-range wireless data-link applications are described in this paper. Taking low power dissipation as first consideration, these designs, employing differential common-source LNA and double balanced mixer architectures, achieve total conversion gain as high as 42.4dB, DSB noise figure as low as 9.5dB, output-referred IP3 as high as of 21.3dBm at about 4mA DC current consumption. This proves it is possible to apply standard CMOS process to implement receiver front-end with low power dissipation for this kind of application, but gain changeable LNA is needed to combat the dominant flicker noise of the mixer in order to achieve acceptable sensitivity and dynamic range at the same time.