Component selection is fundamental to avoiding signal distortion. The linear range of the low-noise amplifier should be matched to the signal characteristics of the application scenario to ensure the device can withstand the actual signal amplitude and avoid distortion caused by the device's inherent linearity limitations. Prioritize devices with excellent noise characteristics and high stability to reduce signal distortion caused by inherent device characteristics. Furthermore, pay attention to the frequency response matching of the device to ensure stable output characteristics within the operating frequency band, reducing the risk of distortion at the source.

A reasonable circuit design can effectively suppress signal distortion. In bias circuit design, bias parameters must be precisely configured to provide a stable operating point for the amplifier, avoiding improper bias that could cause the device to operate in the nonlinear region. Simultaneously, optimize the input/output matching circuit to ensure good impedance matching during signal transmission, reducing distortion caused by signal reflection. In addition, appropriate negative feedback circuits can be introduced to improve the amplifier's linearity, suppress nonlinear distortion, and enhance the integrity of signal transmission.

Stable operating conditions are a key guarantee for avoiding distortion. Strict control of amplifier operating temperature is necessary. Heat dissipation design should be implemented to reduce the impact of temperature fluctuations on device characteristics, preventing excessively high or low temperatures from degrading linear performance. Simultaneously, a stable supply voltage must be ensured to avoid voltage fluctuations causing changes in device operating states and resulting in signal distortion. Furthermore, the input signal amplitude should be reasonably controlled to avoid exceeding the amplifier's linear operating range and preventing issues such as saturation distortion.

External interference can easily induce signal distortion, requiring targeted control measures. In circuit layout, device placement should be rationally planned to isolate the amplifier from interference sources and reduce electromagnetic coupling interference. Simultaneously, shielding design should be adopted to shield the amplifier and critical signal links, blocking external electromagnetic interference. In addition, the grounding design of signal links should be optimized to reduce the impact of grounding noise on the signal, ensuring that the signal is not contaminated by interference during transmission and avoiding signal distortion caused by interference.