Guide to Distinguishing, Comparing, and Selecting Omnidirectional FRP Antennas

Omnidirectional FRP (Fiber Reinforced Plastic) antennas can be categorized into four types based on their external design. Each type differs in structure, parameters, and applicable scenarios. The following details the distinction, comparison, and selection method of these products to facilitate the accurate selection of suitable antennas.

The four types of antennas vary significantly in external structure, dimensions, and core features, as detailed below:

All antennas maintain consistency in core basic performance to ensure stability in general scenarios, including:

• Power Bearing Capacity: 100W for all, compatible with medium and high-power output devices (e.g., medium-power base stations, countermeasure devices).
• VSWR (Voltage Standing Wave Ratio): ≤1.5, resulting in low signal transmission loss and ensuring signal stability.
• Horizontal Lobe: 360° for all, meeting the requirement of omnidirectional signal coverage without horizontal signal blind spots.
• Connector Type: Inset N-J connector, which enables aesthetic installation, secure connection, and reduces signal contact loss.
• Material: All adopt FRP housing + large copper tube vibrator, featuring strong outdoor durability and adaptability to various temperature and climate conditions.

Antennas of different types and frequency bands vary in key parameters, which directly determine their applicable scenarios. The core differences are as follows:

Antennas of different frequency bands have different gains. The higher the frequency band, the greater the gain and the farther the signal transmission distance. The specific correspondence is as follows:

Screen antennas corresponding to the operating frequency band of the device, which is the core prerequisite.

• Example 1: For a 2.4G WIFI router or Bluetooth device, an antenna with a frequency band of 2400-2500MHz should be selected.
• Example 2: For UAV countermeasures (requiring coverage of flight control and image transmission frequency bands), priority should be given to antennas with frequency bands of 5.2G (5150-5350MHz) or 5.8G (5700-5900MHz).

Determine the antenna type by considering the device installation environment, whether it is mobile, and whether there are special requirements (e.g., shock absorption, color).

• Scenario 1: Vehicle-mounted equipment and outdoor mobile backpack-mounted equipment (susceptible to vibration) → Prioritize the shock-absorbing drum spring type (the spring structure resists vibration and ensures signal stability).
• Scenario 2: Fixed installation (e.g., medium-power base stations, regional security) with the need for hidden colors (e.g., military green) → Select the funnelshaped type (supports color customization, and the 20mm tube diameter is suitable for narrow spaces).
• Scenario 3: Portable trolley cases and suitcase-built-in equipment (pursuing compactness) → Choose the batonshaped/microphoneshaped type (short length of 600mm, 25mm tube diameter for easy storage).

Select the appropriate tube diameter according to the internal space of the device or the installation location.

• Sufficient Space (e.g., base station computer rooms, large trolley cases) → 32mm tube diameter (larger built-in copper tube, higher power-bearing efficiency, and more stable performance).
• Narrow Space (e.g., suitcases, small backpack-mounted equipment) → 25mm or 20mm tube diameter (the 20mm diameter is unique to the funnelshaped type and is the most compact).

Select the antenna with corresponding gain and length according to the signal coverage distance and penetration requirements.

• Short-distance Coverage (e.g., within 100 meters, indoor security) → Low gain (3±1dBi, such as 433M/900M frequency bands) + 600mm length (batonshaped/microphoneshaped/funnelshaped types).
• Long-distance Coverage (e.g., over 300 meters, outdoor base stations) → High gain (10±1dBi, such as 5.2G/5.8G frequency bands) + 900mm length (shock-absorbing drum spring type, longer structure enhances signal transmission).

The core logic for selecting omnidirectional FRP antennas is "frequency band matching → determine type based on scenario → select tube diameter based on space → determine gain based on requirements". Priority should be given to ensuring the antenna frequency band matches the device, then select the type according to the scenario (vibration, color, portability), determine the tube diameter based on the installation space, and finally confirm the gain and length according to the signal coverage requirements. Through these four steps, you can accurately select a suitable omnidirectional FRP antenna product to ensure stable and efficient signal transmission of the device.