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Go to Editorial ManagerRadio frequency integrated circuits (RFICs) are widely used in wireless technology systems. Low-noise amplifiers, especially in the 5 GHz frequency range, are vital parts of contemporary wireless communication systems. Research on 5 GHz low-noise amplifiers aims to improve the performance of these amplifiers by addressing issues related to noise, gain, and power efficiency. Low-noise amplifiers are used in many different applications and are essential for developing more effective, efficient, and balanced wireless communication systems. The paper presents a wideband low-noise amplifier (LNA) implemented in a 5 GHz (Low-Noise Amplifier) for 5G Wi-Fi applications. It is driven by a 1.8 V supply. To increase the voltage gain and reduce the power consumption, the circuit has a common source layout and is optimized to reduce the noise figure. Single-stage common source decomposition and inductive source decomposition techniques are also used to match the circuit with the source impedance. Genetic algorithm is also used to optimize the circuit operation. The genetic algorithm has been shown to significantly reduce the noise in the low-noise amplifier circuit, which greatly improves the signal quality. The algorithm has increased the gain of the circuit, making it more sensitive to signals and enhancing its ability to process diverse signals. The proposed LNA showed a total current of 2 mA and a minimum noise figure of 1.107 dB with a high voltage gain of 21.86 dB and a power consumption of 3.6 mW. I expect the proposed LNA to be suitable for 5G Wi-Fi applications in the GHz band.
An essential component of every RF system’s reception chain is the Low-Noise Amplifier(LNA). The sensitivity and performance of subsequent stages in the receiver chain are significantly influenced by the LNA, which is the initial step. Creating an LNA requires carefully balancing trade-offs in order to have the best possible performance in terms of gain and noise characteristics. Achieving optimal functioning and efficiency in the radio frequency system requires finding the correct balance. This article presents the design of an LNA circuit at the lowest cost without adding components such as inductors, active components, or several stages, which increase the complexity of the circuit, consume power, and add additional noise, by controlling the lengths of the microstrip line, LNA circuit was created by ADS software, and add a matching circuit. At the operating frequency of 2.4 GHz, the suggested design achieved good results with a gain of 17.48dB, NF of 0.7dB, stability factor of 1.5dB, and S11-S22 (-41dB, -25dB) in that order.
This article presents a power-efficient low noise amplifier (LNA) with high gain and low noise figure (NF) dedicated to satellite communications at a frequency of 435 MHz. LNAs’ gain and NF play a significant role in the designs for satellite ground terminals seeking high amplification and maintaining a high signal-to-noise ratio (SNR). The proposed design utilized the transistor (BFP840ESD) to achieve a low NF of 0.459 dB and a high-power gain of 26.149 dB. The study carries out the LNA design procedure, from biasing the transistor, testing its stability at the operation frequency, and finally terminating the appropriate matching networks. In addition to the achieved high gain and low NF, the proposed LNA consumes as low power as only 2 mW.