A Linearity-Improved Ultra-Wideband Balun-LNA for Cognitive Radio
نویسندگان
چکیده
An ultra-wideband low noise amplifier for cognitive radio applications covering 50 MHz to 10 GHz is designed in a 65-nm CMOS technology. A three-stage dc-coupled common source amplifier with RC degeneration at the last stage optimizes the gain, linearity and output gain-phase balancing. Throughout the covered band, the simulated voltage gain is >23.3 dB whereas the noise figure is <3.4 dB. The RC degeneration technique improves the IIP2 to 29.3 dBm and IIP3 to -2.7 dBm. The power consumption is 21.4 mW at 1.2 V.
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