A 0.9/1.8/2.4GHz-reconfigurable LNA with Inductor and Capacitor Tuning for IoT Application in 65nm CMOS

This paper presents a 0.9/1.8/2.4GHz-reconfigurable low noise amplifier (LNA) for IoT applications. An input transformer consisting of a primary coil and two secondary coils is proposed in the LNA to ensure impedance matching in three bands. Mutual inductance enhancement scheme is also proposed to b...

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Bibliographic Details
Main Authors: Xing, Xinpeng, Cao, Pengyi, Feng, Haigang, Wang, Zhihua
Format: Conference Proceeding
Language:English
Subjects:
Common-source
Low noise amplifier
Multi-band
Mutual inductance enhancement
Noise figure
Reconfigurable
Transformer
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Summary:This paper presents a 0.9/1.8/2.4GHz-reconfigurable low noise amplifier (LNA) for IoT applications. An input transformer consisting of a primary coil and two secondary coils is proposed in the LNA to ensure impedance matching in three bands. Mutual inductance enhancement scheme is also proposed to boost the inductance Q value and improve circuit performance without power overhead. The proposed LNA is designed and simulated in TSMC 65nm CMOS with an area of 1.32mm 2 . The post-layout simulations show that the presented LNA achieves 14.5/16/17.5dB voltage gain and 2.8/2.5/2.0dB noise figure at 0.9/1.8/2.4GHz. The S11 and the input P1dB are -8.8/-11/-9.6dB and -11/-17/-19dBm at 0.9/1.8/2.4GHz respectively. The LNA power consumption is 4mW from a 1.2V power supply.
ISSN:2162-755X
DOI:10.1109/ASICON47005.2019.8983546