Radio frequency (RF) amplifiers have extensive application in several communication systems. On the other hand, the phase, magnitude, and volage gains of the standard analog RF were lessened. The design and analysis of a single-stage variable gain amplifier (SSVGA) using cascaded linear transconductance amplifier (Gm cell) and linear transimpedance amplifier (TIA) blocks with feedback via shunt resistors are the main topics of this study, which summarizes a research article on the subject. Constant bandwidth and controlled voltage gain are the goals of the SSVGA architecture, which makes it adaptable to a wide range of input signal intensities. An efficient conversion of the input voltage signal to an output current is achieved by the current mode TIA, which is the first step of the SSVGA. A Gm cell with source degeneration is used in the second stage to improve transconductance at the supply voltage and bias current efficiency. Because of its versatility and flexibility, the suggested SSVGA design can be applied to a wide range of signal processing and communication devices. The integration of feedback control guarantees uniform performance throughout various voltage gain configurations, culminating in a resilient and effective resolution for fluctuating signal intensities.

Variable Gain Amplifier, Transconductance Amplifier, Transimpedance Amplifier, Voltage Gain.