by 水御龙神

Article by Heinz Golz

A Gps is only as good as the Gps signals it might receive, so why not make sure that you are receiving the best possible signals Gps antennas are invaluable pieces of electronic equipment but field situations are often tough and can adversely have an effect on them. Gps antennas are becoming better, and you can certainly get Gps signal indoors, nevertheless it is not always certain.

Gps antennas are devices that helps to increase the reception signal to a Gps receiver, whether it is a standalone receiver or an embedded receiver. Typically a Gps antenna is used in a situation where the Gps receiver itself is somehow removed from a line of sight to the sky, (as in a car), to assist the Gps receiver see the sky without having to be moved. Gps antenna may be bought for a variety of budgets. Cheaper home kinds might be made with fairly widespread components.

Gps reception can solely be reliable in case the antenna has a free sight of the sky. Passive Gps antennas do not include a Low Noise Amplifier (LNA). When connected to a Gps, it’s the internal amplifier within the Gps that strengthen the weak signal of the passive antenna.

So when must one employ a passive external antenna? In conditions you have got a clear view of the open sky, however when your Gps receiver has somewhat, obstructed view of the sky which means it is put inside the car or buried somewhere.

A number of types of inside Gps Antennas are available.Inner Gps antennas:

When Gps antennas are connected to a Gps, it is the internal amplifier within the Gps receiver that amplifies the weak signal of the passive antenna.Internal Gps antennas indicates they’re built into the Gps receiver itself. External antennas are an option on several models. All Gps come with an inner built antenna. The efficiency of the receiver is straight connected to the antenna size ( the larger the better).

One type is the internal Patch antenna, which is a square conductor fixed over square piece of metal. The benefit of the Patch antenna is that it reacquire the satellite signal quicker if it has been lost. For greatest performance with internal patch antenna, maintain the Gps units face up and parallel to the earth.The second kind is internal Quad helix which is a round tube wrapped with wire. They are more sensitive to Gps signals. For best performance hold the Gps in order that the antenna is indicating to the sky.

External Gps antennas:External means it isn’t built into or onto the Gps receiver. External Gps antennas are useful when the Gps is situated in a spot where the view of the sky is blocked like in a car, boat or an airplane.

Reradiating Gps antennas :I f the Gps receiver doesn’t have a connecting jack for external antenna you need to use a reradiating Gps antenna which include two antennas : One receives the Signal from the satellites and the other one is connected to the primary one and is situated near the Gps receiver. The effect is like an external antenna connected to the Gps receiver.

More GPS Articles