cable lmr200

　　LMR200 cable: a key link in the field of RF transmission

　　In the context of the continuous expansion of modern wireless communications and RF applications, it is crucial to ensure that signals can be transmitted efficiently and stably. As a coaxial cable with excellent performance, LMR200 cable plays a key role in many fields and meets the stringent requirements for signal transmission in different scenarios.

　　1. Structural design analysis

　　LMR200 cable adopts a carefully designed coaxial structure, which consists of multiple key parts from the inside to the outside. The center conductor is made of solid bare copper. This choice gives the cable excellent conductivity, which can ensure that the RF signal is stable and efficient during transmission, and minimize the attenuation and distortion of the signal. Surrounding the center conductor is a dielectric composed of PE (F), which not only physically isolates the center conductor from the outer structure, but also has an important impact on signal transmission in terms of electrical performance, ensuring the stability and accuracy of signal transmission.

　　The shielding layer design of the LMR200 cable is very sophisticated, using a double shielding structure of aluminum tape and tinned copper wire braid. The aluminum tape shielding can effectively resist external electromagnetic interference and reduce the impact of stray signals on the transmission signal; the tinned copper wire braiding layer further enhances the shielding effect and gives the cable good flexibility, making it easy to cope with various complex wiring environments during installation. The two complement each other and provide the cable with a radio frequency shielding efficiency of up to 90dB, ensuring the purity of the signal during transmission. The outermost black PE sheath plays an all-round protective role. It can prevent the internal structure of the cable from physical damage, whether it is friction during installation or collision in daily use. In addition, the PE sheath also has excellent weather resistance, can maintain stable performance under different environmental conditions, adapt to high temperature, humidity, ultraviolet radiation and other harsh environments, and greatly extend the service life of the cable.

　　2. Electrical performance highlights

　　(I) Stable impedance matching

　　The characteristic impedance of the LMR200 cable is precisely set to 50 ohms. This value is not determined arbitrarily, but has been verified by a lot of theoretical research and practice. In actual RF application scenarios, many devices such as antennas and RF modules are designed according to the 50 ohm impedance standard. When the LMR200 cable is connected to these devices, the 50 ohm characteristic impedance can achieve good impedance matching, ensuring that the signal is reflected as little as possible during transmission. Signal reflection will cause energy loss, reduce transmission efficiency, and may even cause signal distortion, affecting communication quality. The LMR200 cable, with its stable impedance matching performance, effectively avoids these problems, improves the efficiency of signal transmission, ensures the integrity of the signal, and enables various RF devices to work together efficiently. In wireless communication base stations, LMR200 cables are used to connect base station antennas and RF transceivers. Its 50 ohm characteristic impedance ensures that the transmission loss of signals between the base station and the antenna is minimized, thereby improving the coverage and communication quality of the base station.

　　(II) Wide frequency response

　　LMR200 cables have an extremely wide frequency response range, supporting frequency signal transmission from direct current (DC) to up to 5.8GHz. This feature enables them to be widely used in RF communication scenarios of various frequencies. In today's wireless communication field, multiple communication technologies and frequency bands coexist, such as 2.4GHz and 5GHz wireless local area networks (WLAN), 4G/5G cellular communication networks, global positioning systems (GPS), and emergency service radios. LMR200 cables can maintain stable electrical performance at these different frequencies, and can handle both low-frequency signal transmission and high-speed data communication at high frequencies. On the automated production lines of smart factories, a large number of wireless sensors and devices transmit data through the 2.4GHz frequency band. LMR200 cables can stably connect these devices to ensure real-time and accurate data transmission, providing guarantees for the efficient operation of the production line. In some scientific research and testing equipment with high requirements for communication frequency, LMR200 cables can also meet their signal transmission needs in the high frequency band, ensuring the accuracy and reliability of the test results.

　　(III) Low signal attenuation

　　Signal attenuation is one of the important indicators for measuring cable transmission performance, and LMR200 cables perform well in this regard. At a frequency of 1GHz, its attenuation is only 10.5dB/100 feet. Lower attenuation means that when the signal is transmitted in the cable, the energy loss is small, and the signal strength can be maintained at a high level over a long distance. This feature makes LMR200 cable suitable for application scenarios that have certain requirements for signal transmission distance. Although there may be cable products with better performance in some ultra-long-distance transmission scenarios with extremely stringent attenuation requirements, in many practical applications, the attenuation characteristics of LMR200 cable can provide a cost-effective solution while ensuring signal quality. In indoor distributed antenna systems (DAS), LMR200 cables are used to connect each antenna unit to the signal source. Due to the relatively limited indoor space and short transmission distance, the low attenuation characteristics of LMR200 cables can meet the signal transmission requirements, and its relatively low cost helps to reduce the construction cost of the entire system. In some small outdoor wireless communication base stations, LMR200 cables can also be competent for the connection between antennas and base station equipment, ensuring stable signal transmission within a certain distance and providing reliable communication services for surrounding areas.

　　III. Physical performance advantages

　　(I) Excellent flexibility

　　LMR200 cables are highly favored for their excellent flexibility. During the design and manufacturing process of the cable, the material selection and internal structure optimization are rationally selected to enable it to have excellent bending performance. The tinned copper wire braid and the soft PE sheath play a key role in this feature. While providing good shielding performance, the tinned copper wire braid can flexibly deform with the bending of the cable and will not break due to bending, ensuring the integrity of the cable's internal structure; the soft PE sheath further enhances the flexibility of the cable, allowing the cable to be easily bent into various shapes during installation to adapt to complex wiring environments. Its minimum bending radius is only 0.5 inches and the repeated bending radius is 2 inches, which means that even in the case of multiple bends, the electrical performance of the cable will not be significantly affected and it can still transmit signals stably. In some electronic devices with limited space and complex wiring, such as small RF test instruments, portable communication equipment, etc., LMR200 cables can be easily wired, which is convenient for the assembly and maintenance of equipment. In the integrated wiring system inside the building, LMR200 cables can also flexibly pass through various pipes and trunkings to achieve connections between different devices, providing convenience for building an efficient communication network.

　　(II) High durability

　　Durability is another significant advantage of LMR200 cable. Its outer black PE sheath not only provides good flexibility for the cable, but also gives it excellent durability. The PE sheath has multiple characteristics such as waterproof, dustproof, and UV resistance, which can fully protect the internal structure of the cable from erosion by external environmental factors. In terms of waterproofing, the PE sheath can effectively prevent moisture from entering the cable, avoid electrical short circuits and corrosion problems caused by moisture, and ensure that the cable can still work normally in a humid environment. Whether in the outdoor environment on rainy days or in the indoor environment with high humidity, such as basements and computer rooms, LMR200 cables can reliably transmit signals. In terms of dustproofing, the PE sheath can block dust particles from entering the cable, prevent dust accumulation from affecting signal transmission, keep the inside of the cable clean, and extend the service life of the cable. The UV resistance ensures that when the LMR200 cable is used outdoors for a long time, the material will not age and the performance will not deteriorate due to ultraviolet rays in the sun. In the antenna wiring of outdoor wireless communication base stations, LMR200 cables can withstand long-term sunlight exposure, always maintain stable performance, and ensure stable transmission of communication signals. In addition, the PE sheath also has a certain chemical corrosion resistance, which can resist the erosion of common chemicals to a certain extent, further broadening the application scenarios of the cable.

　　IV. Application field display

　　(I) Wireless communication field

　　Small base stations and distributed antenna systems: With the explosive growth of mobile data demand, a large number of small base stations and distributed antenna systems (DAS) are densely deployed in cities. LMR200 cables play an indispensable role in this field with their flexibility and excellent electrical properties. During the installation of small base stations, due to limited space, cables need to be flexibly wired. LMR200 cables can easily meet this requirement and achieve efficient connection between base station equipment and antennas. In the DAS system, signals need to be distributed to multiple antennas for coverage to ensure that all areas indoors can obtain stable signals. The low loss and good shielding performance of LMR200 cables can ensure the stability of signals during distribution and transmission, effectively reduce signal attenuation and interference, and improve the coverage quality and signal strength of indoor wireless communications. In crowded places such as large shopping malls and office buildings, the DAS system connects various antennas through LMR200 cables to provide high-speed and stable wireless network services to a large number of users, meeting people's needs for mobile data indoors.

　　Wireless access point expansion: In large buildings such as corporate offices, shopping malls, and hotels, in order to achieve full coverage of wireless networks, it is often necessary to deploy multiple wireless access points (APs). LMR200 cables can be used to connect wireless APs to network switches or routers to achieve remote power supply (PoE) and data transmission of APs. Its flexibility makes it easy to install and wire in complex wiring environments inside buildings without worrying about difficult operation due to hard cables. Moreover, the good frequency response of LMR200 cables in the 2.4GHz and 5GHz frequency bands can perfectly meet the needs of high-speed data transmission of wireless APs. With the advancement of digital office work in enterprises, employees are increasingly dependent on wireless networks. LMR200 cables ensure that wireless APs can stably provide employees with high-speed and reliable network connections and improve office efficiency. In hotels, guests' requirements for the quality of wireless networks are also increasing. LMR200 cables help hotels achieve full coverage of wireless networks, provide guests with high-quality Internet experience, and improve the service quality of hotels.

　　(II) Amateur radio and communication testing

　　Amateur radio enthusiasts' equipment connection: Amateur radio enthusiasts are keen to build their own communication equipment and explore the fun of wireless communication. LMR200 cables are very popular in this field and are often used to connect amateur radio transceivers to outdoor antennas. During the connection process, the low loss characteristics of LMR200 cables can ensure the signal transmission quality between the transceiver and the antenna, reduce signal attenuation, and enable enthusiasts to communicate at a longer distance. Its flexibility also brings great convenience to installation. Whether it is installing an antenna on the roof or arranging a transceiver indoors, LMR200 cables can easily cope with various complex wiring requirements. Amateur radio enthusiasts can use LMR200 cables to build a stable communication link, conduct voice communication, data transmission and other activities with other enthusiasts, expand their communication range, and share the experience and fun of wireless communication.

　　Communication test equipment connection: In the process of research and development, production and quality inspection of communication equipment, various high-precision test equipment is needed to evaluate the performance of the equipment. LMR200 cables are often used to connect test equipment and the device under test, such as the connection between RF signal generators and power meters. In these test scenarios, the accuracy of signal transmission is extremely high, and any distortion or attenuation of the signal may cause deviations in the test results. The stable electrical performance of the LMR200 cable can ensure the accuracy of the test signal during transmission and provide reliable data support for the performance test of communication equipment. When performing RF performance tests on mobile phones, wireless modules and other devices, the LMR200 cable can accurately transmit the test signal to the device under test, ensure the reliability of the test results, and help R&D personnel accurately evaluate the performance of the equipment and optimize product design.

　　(III) Other RF applications

　　Industrial automation and SCADA systems: Under the wave of Industry 4.0, industrial automation and monitoring systems (SCADA) have been widely used. Inside the factory, a large number of sensors are deployed to monitor the operating status of equipment, production environment parameters and other information in real time. These sensors need to transmit the collected data to the control center for real-time monitoring and decision-making. LMR200 cables can be used to connect wireless sensor nodes with data aggregation devices. In complex industrial environments, various electrical equipment will generate a large amount of electromagnetic interference, which seriously affects the accuracy and stability of data transmission. The 90dB RF shielding effectiveness of LMR200 cables can effectively resist these interferences, ensure that sensor data is transmitted to the control center without interference, and realize real-time monitoring and control of industrial production processes. In smart factories, the sensor network connected by LMR200 cables can collect the operating data of various equipment on the production line in real time, such as temperature, pressure, speed, etc., to provide data basis for the optimization of the production process, improve production efficiency and reduce production costs.

　　In-vehicle communication and navigation system: With the rapid development of Internet of Vehicles technology, in-vehicle communication and navigation systems have become an important part of modern automobiles. LMR200 cables play a key role in this field and can be used to connect in-vehicle antennas with communication modules, navigation modules and other equipment. Inside the car, the space is limited and the wiring is complex. The flexibility of the LMR200 cable allows it to be easily installed and adapt to the complex wiring environment inside the car. Moreover, during the driving process of the vehicle, it will face various harsh conditions such as vibration and temperature changes. The durability of the LMR200 cable can ensure the stability of signal transmission. Whether it is the signal transmission between the vehicle-mounted GPS antenna and the navigation system, or the data interaction between the vehicle-mounted 4G/5G communication module and the antenna, the LMR200 cable can ensure the stable transmission of the signal, provide the driver with accurate navigation information and stable communication connection, and improve the driving experience and driving safety. During long-distance driving, the vehicle-mounted communication system connects the antenna through the LMR200 cable, which can obtain road conditions information in real time, plan the best route for the driver, and avoid congestion; the vehicle-mounted entertainment system also relies on the LMR200 cable to connect the antenna to provide passengers with smooth online music, video and other entertainment services.

　　V. Market products and purchase guide

　　(I) Common product models and brands

　　Many brands on the market have launched a wide variety of LMR200 cables and related components. As a well-known brand in the industry, Pasternack's LMR-200 series products have a high market recognition. This series provides different lengths and a variety of connectors.