An ESD-protected, 2.45/5.25-GHz dual-band CMOS LNA with series LC loads and a 0.5-V supply

An ESD-protected, CMOS, dual-band 2.45/5.25-GHz LNA was designed, fabricated, and characterized. Operation in two bands is enabled by a dual-band input matching network and separate series LC load resonators for each operating frequency. At 2.45 GHz, the measured voltage gain and IIP₃ are 13.9 dB and +2.9 dBm, respectively. At 5.25 GHz, the measured voltage gain and IIP₃ are 8.7 dB and +3.2 dBm, respectively. The LNA consumes 2.5 mW from a 0.5-V supply. The ESD protection level of the LNA is over 9 kV (human body model).