/
/
/
- Gain - Low Frequency: 30.5 ± 1 dBi
- Gain - High Frequency: 32.2 ± 1 dBi
- Beam width: 4.1°
- Input/output: Circular waveguide Ø 26 mm
- Dimensions: Ø 68 cm
- Gain - Low Frequency: 33.0 ± 1 dBi
- Gain - High Frequency: 35.1 ± 1 dBi
- Beam width: 3.4°
- Input/output: Circular waveguide Ø 26 mm
- Dimensions: Ø 90 cm
- Gain - Low Frequency: 35 ± 1 dBi
- Gain - High Frequency: 37.2 ± 1 dBi
- Beam width: 2.3°
- Input/output: Circular waveguide Ø 26 mm
- Dimensions: Ø 120 cm
- Gain - Low Frequency: 38.6 ± 1 dBi
- Gain - High Frequency: 39.8 ± 1 dBi
- Beam width: 1.6°
- Input/output: Circular waveguide Ø 26 mm
- Dimensions: Ø 180 cm
- Connectors: 2x N female
- Polarization: Linear - horizontal and vertical
7/8 GHz antennas are specialized radio communications equipment designed to operate in the microwave bands around 7 GHz (often from 6.4 GHz to 7.1 GHz) and 8 GHz (often from 7.1 GHz to 8.5 GHz). These are licensed bands used primarily for building professional, high-performance point-to-point (PtP) radio links, often used in telecommunications, energy, and military applications, as well as by Internet service providers (ISPs) for building backbone transmission networks.
Applications and Advantages of 7/8 GHz Antennas:
-
High Throughput: The main advantage of operating in the 7/8 GHz bands is the ability to achieve very high throughputs, in the order of hundreds of megabits or even gigabits per second. This enables the transmission of large amounts of data, high-definition video streams, and the handling of multiple voice channels simultaneously
-
Link Stability and Reliability: Due to the licensed nature of these bands, the risk of interference is significantly lower compared to unlicensed bands (e.g., 2.4/5 GHz). These antennas are designed to operate in harsh environments, ensuring a stable and reliable connection
-
Long Range: Properly selected antennas combined with powerful transmitters allow for the construction of links over significant distances, often tens of kilometers
-
High Directivity: 7/8 GHz antennas are highly direct, minimizing interference with other systems and enabling efficient use of the available bandwidth. This is particularly important in densely built-up areas or areas with a large number of radio links
-
Transmission Security: Licensed bands and dedicated devices often require higher security standards for data transmission
-
Professional Applications: Ideal for telecommunications operators, internet service providers, energy companies, and public utilities that require reliable and fast connections for transmitting data, voice, and video
What to Consider When Choosing 7/8 GHz Antennas:
Choosing the right 7/8 GHz antenna is crucial for optimal radio link performance. Consider the following factors:
-
Antenna Gain: Expressed in dBi, it determines the antenna's ability to focus energy in a specific direction. The higher the gain, the greater the range and better the signal quality, but also the narrower the beam. The choice of gain depends on the distance between the points and the required fade margin
-
Beamwidth: The narrower the beam, the more directional the antenna and the greater the immunity to interference, but also the more difficult it is to precisely align
-
Radiation Pattern: It is important that the antenna has the smallest possible sidelobes, which minimizes interference and increases energy efficiency
-
Polarization: Antennas can be vertical, horizontal, or dual-polarized. Dual-polarization antennas allow for simultaneous data transmission in two planes, doubling the link capacity
-
Parabolic (Dish) Antennas: Most common in the 7/8 GHz bands due to their high gain and excellent directional properties. They come in various sizes
-
Panel (Panel) Antennas: Less common in these bands, but can be used for shorter distances or in specific applications
-
Front-to-Back Ratio (F/B): Determines how well the antenna attenuates signals coming from behind. A high F/B is crucial for minimizing interference
-
Weatherproofing: The antenna will be exposed to rain, snow, wind, and sun. It is important that it is made of durable, corrosion-resistant materials and has an appropriate IP rating
-
Connector Type: Ensure the antenna has a connector compatible with your radio (e.g., N-type, SMA, etc.)
-
Manufacturer and Build Quality: Choose reputable manufacturers who offer certified products and technical support. Build quality directly impacts the durability and reliability of the antenna
-
Regulatory Compliance: Ensure the antenna you choose complies with local regulations regarding the use of the 7/8 GHz bands and EIRP (Effective Isotropic Radiated Power) power limits
