A Global Navigation Satellite Systems (GNSS) antenna is an essential component of a GNSS receiver system, which receives satellite signals and calculates the accurate position. The primary function of a GNSS antenna is to receive these signals and pass them along to the GPS receiver. This transfer allows the GPS receiver to calculate its position, speed, and direction. There are many types of GNSS antennas, each with its unique benefits.
In this article, we will discuss the primary functions of a GNSS antenna and how they work. We will also explore the benefits customers can expect when using a GNSS antenna in their applications.
What Is the Main Purpose of GPS Antenna Systems?
GPS antenna systems receive and amplify satellite signals. The amplified signal is passed to the GPS receiver, which uses the information to calculate the antenna's location. GPS polarized antennas only receive signals vertically or horizontally polarized. It has noise amplifiers that allow the GPS receiver to filter out noise and interference from other sources.
The primary purpose of GPS antenna systems is to provide a clear and accurate signal to the GPS receiver without interference.
How Does a Multi-GNSS Antenna Work?
A multi-GNSS antenna is an antenna that can receive signals from more than one GNSS constellation. The most common constellations from which a multi-GNSS antenna can receive signals are GPS, GLONASS, BeiDou, and Galileo. Multi-GNSS antennas can receive signals from all four GNSS constellations, which provides the user with the most accurate position possible.
Multi-GNSS antennas receive signals from several GNSS constellations and then pass the information to the GPS receiver. The GPS receiver uses the information from the antenna to pinpoint the antenna's location. The multi-GNSS L1/L2/L5 Precision High Gain Antenna is an excellent example of a multi-GNSS antenna.
Frequencies and Signals
The ground plane is an essential component in GNSS antennas. The plane reflects electromagnetic waves and helps send them toward your receiver so that you can receive stronger signals with less interference. GNSS antennas must receive radio signals for specific frequencies. The frequency bands are the frequency ranges that the antenna can receive. The most common frequency band for GNSS antennas is 1575.42 MHz, the frequency at which GPS signals are broadcast. The antennas can also receive signals on other frequency bands, such as 1227.6 MHz (GLONASS), 1176 MHz, and 1602 MHz (BeiDou).
Antenna Characteristics Based on Type
The four most common antennas are rugged, choke ring, helical, and patch antennas.
The rugged antenna is the most popular type of GNSS antenna. Rugged antennas are designed to withstand harsh environments in industrial and military applications. They are typically larger and heavier than other types but offer superior performance in challenging conditions.
Choke ring antennas have a circular shape and are often used in automotive applications because they can be mounted on the roof of a vehicle. The antenna design reduces multipath interference, which can degrade GNSS performance. They are typically smaller and lighter than rugged antennas but may not perform well in challenging conditions.
Helical antennas have a cylindrical shape used in various applications, including base stations, handhelds, and vehicles. Helical antennas are often used in GNSS applications because they have a wide beam width and high gain. They have wider bandwidth, allowing for broadband applications. HF/VHF transmission and reception are possible with these types of antennas.
Patch antennas are flat and mounted on a variety of surfaces. They are often used in portable applications because they are lightweight and easy to install. Patch antennas have a good signal-to-noise ratio and are resistant to interference. On antenna orientation, they should all point upward from the sensor.
Active Antennas vs. Passive Antennas
Active antennas have a built-in amplifier that boosts the signal before being sent to the GPS receiver. This helps improve the accuracy of the position calculation and reduces coax cable losses. Active antennas typically have a higher gain than passive antennas, which means they can receive weaker signals.
Passive antennas do not have a built-in amplifier and rely on the GPS receiver to amplify the signal. Passive antennas are typically smaller and lighter than active antennas. Still, they may not perform as well in areas with signal challenges. Active antennas need an external power supply, but passive antennas don't.
What Benefits Can You Expect From Your Antenna of Choice?
GNSS antennas are the top choice for seamless wireless connections and a wide range of applications. They provide superior performance in challenging environments and are customizable to meet the specific needs of any application. Some benefits you can expect from your antenna of choice include;
- access to a wide range of applications,
- seamless wireless connections,
- and full customization to fit every need.
Access to a Wide Range of Applications
One benefit of antennas is access to a wide range of applications. The most common application for GNSS antenna is GPS. GLONASS, BeiDou, and Galileo also use Antennas. Lastly, Wi-Fi, cellular, and satellite communications leverage antennas.
Seamless Wireless Connections
Another benefit of antennas is seamless wireless connections. Antennas enable devices to communicate wirelessly with each other without the need for wires or cables. It allows for a more convenient and efficient way to connect devices.
Fully Customizable To Fit Every Need
Antennas are also fully customizable to fit every need. There are many antenna designs and sizes available. And custom solutions are tailored to the application's specific needs. For instance, antenna design is crucial for operating UAVs across long distances with obscured vision. Long-range Wi-Fi antennas optimize signal strength and let you use linked gadgets in a broader range of places.
Optimize Your Business With Exceptional Performance From Top-Tier GNSS Antennas
GPS antennas are used in various applications to provide accurate positioning information. They come in multiple shapes and sizes, and each has its benefits.
Novotech offers powerful, low-profile antennas designed for exceptional performance. Our top-tier GNSS antennas are available in various sizes and styles to suit your needs. Contact us today to learn more about our products and how we can help you optimize your business.