Design of a wideband low-power low noise transconductance amplifier for sub-GHz IoT applications

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Abstract

The communication standard IEEE802.11ah, also known as Wifi Halow, is developed especially for IoT applications. This standard works in the sub-GHz range and can, therefore, offer a longer transmission range and achieve low power consumption. This makes the standard suitable for IoT applications. In this thesis, a Low Noise Transconductance Amplifier (LNTA) for an IEEE802.11ah receiver is designed. The LNTA has a single voltage input and a differential current output and is designed in the TSMC 40nm technology. The LNTA will be low power and suit the whole IEEE802.11ah frequency band, while also meeting the specifications on noise figure, input matching and linearity and having several gain settings. In the first stage, the transconductance is boosted to reduce the current consumption and still meet the input matching condition. The second stage of the LNTA provides the single to differential conversion. A detailed description of the design steps is discussed in this thesis.