There are many factors that affect the signal transmission distance, and achieving long-distance high-quality signal transmission is the pursuit of many users. Saluki Technology has a series of high-quality Solid-state Power Amplifiers (SSPA), Low-noise Amplifiers and Antennas to help you achieve high-quality signal transmission over long distances.

What are the main factors affecting the signal transmission distance？

The main factors that affect the signal transmission distance are the output power of the transmitter power amplifier, the receiving sensitivity of the receiver, the anti-interference ability of the system, and the type and gain of the transceiver antenna. Among them, the anti-interference capability of the system includes internal factors such as signal modulation mode, working bandwidth, shielding measures, and external environmental factors such as the spectral distribution of interference signals in the transmission path, tall buildings or topography.

How to eliminate the above influencing factors? 

The technical methods for eliminating the above-mentioned influencing factors include methods such as increasing the power of the transmitted signal, increasing the gain of the transceiver antenna, improving the sensitivity of the receiver, and improving the anti-jamming capability of the system.

According to the Frithian transmission formula:

Los=32.44+20lgd+20lgf

it can be seen that the loss of the signal in space increases with the increase of the transmission distance.

In the case of certain factors such as receiver sensitivity, system anti-interference ability and operating frequency, in order to improve the signal transmission distance, you can increase the transmit power and select a suitable high-gain transceiver antenna. However, the higher the gain, the larger the geometric size of the antenna, and sometimes the antenna with too large size cannot be installed due to site constraints, so increasing the transmit power has become the most commonly used solution.

Saluki’s S3871 series solid state power amplifiers have a wide frequency band and achieve full frequency coverage from 10kHz to 110GHz, with stable output power and high accuracy. Used in conjunction with the low noise amplifier and antenna of the corresponding frequency band, it can help users solve long-distance testing problems.