S5151290P12NF RF/IF and RFID

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RF antennas is a kind of essential device used in multiple wireless communication systems. Among all kinds of antennas, S5151290P12NF is a notably popular item. This article will discuss the application field and working principle of this item.

Application Field

S5151290P12NF is mainly used in wide band operation and some unfavorable operational environments. Especially, it is a preferred option for applications demanding broad frequency coverage and stable performance. Since this item is able to endure various kinds of adverse climate, it is widely applied in mobile communication vehicles and outdoor terminals. It is also frequently employed in incident command systems, tactical Internet, public safety and law enforcement systems.

Working Principle

S5151290P12NF is mainly miniaturized Yagi directional antenna based on 1x3 dipole array. It is composed of 5 sections, including radiation, feed, director 1, director 2 and reflector. The dipole antenna uses the length from 0.194λ to 0.6λ, while 70.3cm is the original wavelength. Radiation and feed sectors are made of dual-sided copper clad boards with air dielectric. The diodes are mounted to keep the antenna at 50 ohm impedance.

In order to minimize the back radiation and ensure the notional gain, every director should keep in correspondence with the driven part. The angle between the driver and reflector should keep at a specific distance. Determine the length and aspect of radiation, director 1, director 2 and reflector respectively to handle the side lobe directivity.

The high gain provided by S5151290P12NF is mainly attributed to the configuration of the directors, reflector and driven part. The radiation pattern of the antenna is similar to that of the traditional Yagi antenna. However, it has lower gain than that of the larger Yagi antenna due to the limitation of the size.

Conclusion

S5151290P12NF is an ideal antenna for general wireless communication applications, which provides users with great performance in a broad frequency range. With excellent capability to resist harsh environments and stability, it is suitable for mobile communication vehicles, outdoor terminals, incident command systems, etc. Thanks to the specific configuration of radiation, reflector, driver and directors, the antenna ensures the optimal outcomes, being able to radiate high gain.

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