Design of 5.2-GHz Low Noise Amplifier for Wireless LAN

摘要

This paper presents 5.2-GHz Low Noise Amplifier (LNA) for 802.11a wireless local area network (WLAN) application. The proposed circuit is fabricated using 0.18μm SiGe HBT BiCMOS technology, and it is powered by 1V supply. To increase voltage gain, this LNA has two-stage architecture. The bias circuit has band-gap reference for low-power and low-voltage application. The proposed LNA showed low power consumption of 6.5mW, high voltage gain of approximately 26dB, low noise figure of approximately 2.6dB, high IIP3 of -5dBm, and small chip size of 1.1×1.2mm~2.