What is the function of radio frequency wire? Bian Xiao answers for you.

Cables, maybe everyone should know, there will be cables on poles. In fact, for things we don't know, cables are essential, and cables are one of the indispensable keys in many things. In a word, its function is really great and its application range is really too wide. But have you ever heard of RF cables? What is radio frequency? Let Bian Xiao introduce the RF cable and its functions to you today.

Radio frequency cable is a cable that transmits electromagnetic energy in the radio frequency range. Radio frequency cable is an indispensable part of various radio communication systems and electronic equipment, which is widely used in wireless communication and broadcasting, television, radar, navigation, computers and instruments.

Product features? ：

1. can transmit broadband.

2. Strong defense against external interference.

3. The antenna effect is small and the radiation loss is small.

4. Simple structure, convenient installation and economy.

product classification

RF cables have various structures and can be classified according to different ways and types.

(1) coaxial RF cable

Coaxial RF cable is the most commonly used structure type. Because the inner and outer conductors are concentric, the electromagnetic energy is confined in the medium between the inner and outer conductors, so it has obvious advantages such as small attenuation, high shielding performance, wide frequency band and stable performance. It is usually used to transmit radio frequency energy from 500 kHz to 18 GHz. At present, there are two kinds of RF coaxial cables in common use: 50Ω and 75Ω RF coaxial cables. Radio frequency coaxial cable with characteristic impedance of 75 Ω is often used in CATV network, so it is called CATV cable, and its transmission bandwidth can reach 1GHz. At present, the transmission bandwidth of ordinary CATV cable is 750MHz.

(2) Symmetric RF cable

The electromagnetic field of the symmetrical RF cable loop is open. Due to the radiation of high frequency electromagnetic energy, the attenuation increases and the shielding performance is poor. Coupled with the influence of atmospheric conditions, it is usually rarely used. Symmetric RF cable is mainly used for low RF or symmetrical feeding.

(3) Spiral RF cable? The conductors in coaxial or symmetrical cables can sometimes be made into spiral coils to increase the inductance of the cable, thus increasing the wave impedance of the cable and delaying the transmission time of electromagnetic energy. The former is called high resistance cable and the latter is called delay cable. If the winding density of the spiral coil is different along the length direction, a variable resistance cable can be made.

The wire and cable industry is the second largest industry in China after the automobile industry, with product variety satisfaction rate and domestic market share exceeding 90%. Worldwide, the total output value of wire and cable in China has surpassed that of the United States, making it the largest wire and cable producer in the world. With the rapid development of China's wire and cable industry, the number of newly-added enterprises is rising, and the overall technical level of the industry has been greatly improved. ? China's sustained and rapid economic growth has provided a huge market space for cable products. The strong allure of China market makes the world focus on China market. In just a few decades of reform and opening-up, China's cable manufacturing industry has made the world sit up and take notice. With the continuous expansion of China's power industry, data communication industry, urban rail transit industry, automobile industry and shipbuilding industry, the demand for wire and cable will also grow rapidly, and the wire and cable industry has great potential for future development.

Cable function:

Cables are used to transmit radio frequency (? RF？ ) signal. ? It has low emission loss and provides protection against electromagnetic interference, so the low power consumption of the signal will be transmitted over a longer distance. ? Coaxial cable consists of core wire, insulation layer, shielding layer and shell. ? This is the so-called coaxial cable because these chapters are coaxial. ? There are many different types of coaxial cables, each of which has different physical and electronic characteristics and is used for specific tasks. ? This is usually used to transmit cable TV signals along suburban streets and homes. ? Coaxial cable is used to transmit TV signals and connect video equipment. ? It can also be used to transmit radio signals and connect the receiver, transmitter and antenna together. ? Short coaxial cables are also used to connect equipment and test equipment, such as signal generators. ? Coaxial cable has been widely used to connect computer local area networks. Lan? )? , but it has replaced twisted pair. ? However, cable broadband is still very popular, and the same coaxial cable is used for cable TV networks. ? Most coaxial cable networks will eventually replace optical fiber networks.

The above is the RF cable and its function explained by Bian Xiao. After listening to Bian Xiao's introduction, do you have a deeper understanding of it? We must correctly understand the RF cable and use it correctly. In the future, its application will be more and more extensive. It is impossible not to know it. Let's talk about it today I hope you can understand it, absorb it and play its role!

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