RF Antennas: RG.02.02.3000W Application Field and Working Principle

RF antennas (or radio frequency antennas) are important components in wireless communication systems such as mobile radio, short-range wireless, and RFID. Among them, RG.02.02.3000W antennas, which are designed and manufactured by our company, have been widely used in practical radio system applications such as satellite and terrestrial radio signal transmission. In this paper, we discuss their application fields and working principle.

Application Field

RG.02.02.3000W antennas are mainly used in satellite and radio broadcasting systems. Its high gain and wide bandwidth provide good signal transmission performance. In addition, the unique structure design ensures low weight, small size and easy installation. Due to the characteristics of its transmission, it is used in a wide range of applications such as cable TV, digital television, digital multimedia broadcasting, digital audio broadcasting, high-definition television, and navigation systems.

Due to its high gain, wide frequency response, low intermodulation, and excellent beam-forming properties, RG.02.02.3000W antennas provide excellent radio performance and support standardization technologies such as Wireless Fidelity (Wi-Fi). It is also used in military fields such as air combat systems. The high durability, immunity of high-density electromagnetic fields, and its radiated pattern stability makes it very suitable for the application in unmanned aerial vehicles (UAV) and other mission critical communication in the military.

Working Principle

RG.02.02.3000W antennas consists of a number of elements placed in an array to form a particular directional pattern, while providing gain of 10 dB. The antenna utilizes crossed stick elements to achieve a wider, more uniform beam width and lower sidelobe level. Each element is fed individually from a low noise amplifier. The antenna system is connected to the feeder system and the power amplifier. The feeder system provides power to the antenna system and also delivers the input signal. Power is distributed to the antenna elements by a wideband power divider.

The key component is the low noise amplifier (LNA). This is a high gain, low noise amplifier placed adjacent to each antenna element. It amplifies the received signal from -25 dBm to 0 dbm. The input impedance is matched to 50 ohms to ensure there is no signal loss. The LNA is electrically tuned to the antenna frequency. The low noise design ensures that the received signal is just above the system noise floor.

The power amplifier is a wideband amplifier connected to the antenna system and the feeder system. The amplifier amplifies the input signal and supplies the antenna elements with the required power. The output signal from the antenna system is delivered to the feeder system, which transmits the signal to the receiver.

The antenna system design provides an optimal combination of gain and radiation pattern together with stability over the operating frequency range. This ensures a high efficiency transmission system with the desired coverage and improved bit rate in radio communications.

Conclusion

RG.02.02.3000W antennas are highly versatile and have a wide range of application fields, such as satellite and terrestrial radio signals, digital multimedia broadcasting, digital audio broadcasting, military communication systems and unmanned aerial vehicles. Their main characteristics include high gain, wide bandwidth, low intermodulation, good beam-forming performance and low weight. The key components are the low noise amplifier and the power amplifier, which provide high radio performance and stability.