Inverter Based UWB LNA

Abstract

The objective of this thesis is to design an inverter based LNA with resistive feedback. This amplifer has 3 stages, each as an inverter with resistive feedback. There are no inductors used in the circuit. There is a current mirror used to bias the individual stages of the circuit. It is aimed to have a small signal gain of at least 20 dB, an NF no more than 7 dB, an s11 less than -10 dB, and a bandwidth of 3.1 - 10.6 GHz. The simulated results are as follows: a peak small signal gain of 30.5 dB, an s11 of less than -11.5 dB, a minimum NF of 7.76 dB and a bandwidth of 0.245 -16.4 GHz. In the post layout simulation, The simulated results are as follows: a peak small signal gain of 30.56 dB, an s11 of less than -11.46 dB, a minimum NF of 7.77 dB and a bandwidth of 0.245 -16.98 GHz. There is not much variation with respect to voltage, however, extreme temperatures affect its functionality. The LNA designed can be expected to have a very high FOM compared to other LNAs due to its low power consumption, small area, high bandwidth, and good s11.

Date of Award	2025
Original language	American English
Supervisor	Mihai Sanduleanu (Supervisor)