Design of 2–3 GHz Broadband LNA with Distributed Filters for Various Wireless Applications

In this article, we have designed a low-noise amplifier, optimizing its performance by incorporating coupled line filters at both the input and output stages. The obtained results unequivocally affirm the unconditional stability of this amplifier across the entire frequency band of 2–3 GHz. Notably, the displayed gain surpasses expectations, and the reflection coefficients \({S}_{11}\) and \({S}_{22}\) at the input and output are maintained at minimal levels. This characteristic is crucial for ensuring optimal Amplifier performance. The versatility of this amplifier model positions it as a multifaceted solution suitable for integration into dedicated Wi-Fi systems. Furthermore, it presents promising prospects for deployment in diverse fields, including wireless communications, wireless sensor technologies, telemetry systems, and remote monitoring devices. The use of distributed elements, such as our filter, makes the manufacturing process more cost-effective and straightforward, involving only one localized component, the stability resistor. This choice contributes to the cost-effectiveness and ease of production of the Amplifier.