Why is the active GPS antenna signal better? What is the reason?

Through the tracking and summary of user experience, it is found that the signal of the active GPS antenna is obviously better than the signal of the passive GPS antenna. Many people do not understand this conclusion. Why is there such an obvious difference between the two? Next, let’s discuss together why the signal of the active GPS antenna is better and what are the reasons?

　　1. External power supply for antenna

The biggest difference between active GPS antenna and passive GPS antenna is actually the difference in power supply method. The active antenna is powered by an external power supply. This kind of power supply is different from the household power supply we usually use. The function of this power supply is not only to supply power, but also to transmit enhanced signals. Passive GPS antennas do not have a special power supply, so they have no signal enhancement function, and their signal strength is not as strong as that of active antennas.

　　2. Contains signal amplifier

Another reason why the active GPS antenna has a strong signal is that it contains a two-stage low-noise amplifier. This kind of amplifier can amplify the signal from the front end of the active antenna. The amplified antenna can directly reach the receiving signal position through the transmission of the internal circuit, so that the signal reception effect is stronger than that of the passive antenna. And because the signal reception is completed inside the device, there is no other external interference, resulting in a very low attenuation rate of the signal, and the received signal effect is very good.

　　3. Antenna installation location

Since the installation position of the active GPS antenna signal is more ideal than that of the passive GPS antenna, the signal attenuation of the active antenna is weaker during actual use, while the signal attenuation of the passive antenna is very serious during use, resulting in a very weak signal received.

　　Active GPS antennaThey have different usage effects from passive GPS antennas, so their actual application environments are also different.