The antenna of the 4g long battery life gps tracker mainly converts the electromagnetic wave energy of the radio signal emitted by the satellite into the current that can be ingested by the electronics of the receiver. Therefore, the size and shape of the GPS antenna is very important, which determines the ability of the antenna to obtain weak GPS signals and the stability of the satellite signal reception. Generally, 4g long battery life gps tracker can be divided into vertically polarized antenna and circular polarized GPS antenna according to the polarization mode. It can be divided into internal antenna and external antenna from the way of placement.

So, what's the difference between a 4g long battery life gps tracker and an external antenna? Which is better?

1. Advantages and disadvantages of external antenna:

Advantages: The GPS antenna external type of work coverage is wider than the built-in type. Generally speaking, the signal receiving ability of the external antenna of the locator is stronger and more stable than that of the built-in antenna, and the signal range that can be received will be wider.

Disadvantages: Power consumption, so generally need a built-in power supply. And the external antenna of the equipment, so that people know that it is to receive the signal at a glance, as long as the antenna is cut off, the equipment is damaged, and the safety is low.

Two, the advantages and disadvantages of the built-in antenna:

Advantages: Generally speaking, because the GPS antenna built-in appearance is smaller than the external type. And it is simple and convenient to use, without connecting the power supply. In addition, the built-in antenna is not easy to be damaged because the antenna is "hidden". Devices with built-in antennas would also look much safer, smaller and more hidden.

Disadvantages: Because the built-in antenna is "hidden", the signal receiving ability of the built-in antenna will be worse than that of the external antenna, and the signal receiving range will be relatively narrow. If you do not pay attention to the installation, it is easy to cause no star search, or poor signal, inaccurate positioning.

In fact, in order to take into account the signal receiving ability of the equipment and avoid the destruction of the equipment antenna, many positioning equipment businesses will install external antennas and internal antennas for the positioning device at the same time, and give the equipment double-layer insurance. Users do not need to worry about the ability of the device to receive signals, only need to consider the function of the locator.

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