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What is the role of the GPS antenna
Author:admin    Released in:2018-06-06 09:45:02    Written words:【Big】【In the】【Small
Abstract:I believe everyone knows that gps is mainly used to receive satellite signals and then to locate or navigate the terminal products. In the process of receiving the antenna signal by gps, the antenna must be used. The GPS satellite signals are divided into L1 and L2, and the frequencies are 1575.42 MHz and 1228 MHz, respectively. L1 is an open civil signal and the signal is circularly polarized. The signal strength is about -166dBW, which is a relatively weak signal. It is because of these characteristics that it is decided that a special antenna is required for gps signal reception. So what is the role of the GPS antenna? Here I will introduce you to the role of the GPS antenna.

I believe everyone knows that gps is mainly used to receive satellite signals and then to locate or navigate the terminal products. In the process of receiving signals by gps, the antenna must be used. The GPS satellite signals are divided into L1 and L2, and the frequencies are 1575.42 MHz and 1228 MHz, respectively. L1 is an open civil signal and the signal is circularly polarized. The signal strength is about -166dBW, which is a relatively weak signal. It is because of these characteristics that it is decided that a special antenna is required for gps signal reception. So what is the role of the GPS antenna? Here I will introduce you to the role of the GPS antenna.

 The first role: used to capture satellites, receiving satellite positioning information. That is, radiating and receiving electromagnetic waves; any high-frequency circuit, as long as it is not completely shielded, can radiate electromagnetic waves more or less to the surrounding space, or more or less receive electromagnetic waves from the surrounding space. According to the different GPS antennas, it can be divided into a flat antenna and a spiral antenna. The spiral antenna has a stronger star search capability. Not transmitting cell phone signals.
The second role: the electromagnetic wave energy of the radio signal transmitted from the satellite is converted into the current that the receiver electronics can ingest, that is, the energy conversion; usually for the dedicated device or the in-vehicle device, since the device and the GPS receiving module are often There is a certain distance, so in the real environment, more than 1 meter of broken line may be used; but because the feeder has a lot of loss to the signal, in this case only the active GPS antenna can be selected.
After reading the above, what is your role in the GPS antenna, there should already be a simple understanding.

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