In radar systems, limiting low-noise technology is primarily used to protect sensitive components in the receiver channel, such as low-noise amplifiers, from being damaged by strong signals. At the same time, low-noise amplifiers can effectively amplify weak echo signals and reduce noise, thereby improving the signal-to-noise ratio. Moreover, the synergistic effect of limiters and low-noise amplifiers can effectively suppress strong interference signals, enhance the radar's anti-jamming capability, and control the dynamic range of the signal, making it more suitable for subsequent processing. These functions together ensure that radar systems can operate continuously and stably under various signal strengths. They are widely used in traditional radar systems as well as modern advanced radar systems such as active phased array radar and synthetic aperture radar (SAR).

Recently, SDSX has launched an X-band limiting low-noise amplifier chip - SX2814. The chip is powered by a single supply voltage of 4.5V. With an operating current of 24.5mA, it can achieve a small signal gain of 29.8dB and a limiting power tolerance as high as 41dBm, while its receiver noise figure is as low as 0.9dB.

Currently, the SX2814 has successfully passed a series of rigorous tests and verifications. The test results indicate that the chip performs excellently in a variety of complex electromagnetic environments. It not only boasts outstanding limiting and low-noise performance but also demonstrates remarkable stability and reliability. Its key indicators, such as small signal gain, limiting power tolerance, and receiver noise figure, have all reached industry-leading levels, providing radar systems with more precise and stable signal amplification and noise suppression capabilities.