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Since United Technologies acquired the avionics and interiors transaction for $23 billion, United Technologies has become one of the world's largest suppliers of avionics components. In order to solve the situation that the large number of charging piles in the waiting room are in short supply, the airline has adopted a Qualcomm dual-channel WiFi technology, which not only solves the problem of too large coverage, but also improves the capacity and capacity of the public WiFi network to...
Radio Frequency Identification (Radio Frequency IdenTIficaTIon, RFID) is an automatic identification technology that emerged in the 1990s. The technology utilizes a contactless approach to obtain target information and communicates bidirectionally with the target information. Due to its contactless working characteristics, it is called the third generation automatic identification technology. An automatic identification system consists of two parts: a reader and an electronic tag. The antenna...
The non-stop electronic billing system (ETC) is a fully automatic electronic toll collection system for highways, bridges and tunnels. It is used to solve the congestion of highway toll gates, save highway land resources and save energy and reduce emissions. Effective means. Compared to the manual semi-automatic charging method being used, the electronic non-stop charging technology can increase the lane capacity by 3 to 5 times. The ETc system enables wireless communication between the vehicle...
Due to the unique physical properties of plasma, plasma antennas have an incalculable development potential in solving antenna stealth and mutual coupling, and are a major advancement in antenna technology today. Many large companies in the world are researching and developing plasma antennas. Based on the tracking and analysis of the development of plasma technology, based on the collected information and technical literature, the development of plasma antenna technology at home and abroad is...
Antenna designs for mobile applications are becoming more complex, requiring flexible MEMS technology to meet the requirements of integrating new features and new applications. New applications and new features such as TV reception are continually integrated into wireless devices. In addition, wireless technologies, including local area networks (Wi-Fi), broadband wireless access (WiMAX), digital television (DVB-H), global positioning system (GPS), ultra-wideband (UWB), and multiple input...
5G has become a huge business opportunity from the chip, module, solution IDH to all the upstream and downstream manufacturers of the product equipment vendors. Opportunities are accompanied by challenges. This paper discusses the principles of RF front-end antenna design, 5G multi-antenna design and antenna system design for 5G multi-mode terminals.
In the previous section, the USB interface and SDIO interface series network card type WiFi module are analyzed in seven sections. In fact, the network card class can be directly used as the PCIe interface; The package is basically a standard size of 51*30mm, and also has a stamp hole package and a 30*26.7 small size specification; Single channel with RTL8188EE solution, with Bluetooth with BCM43455 solution; Dual channel 11n has AR9287/AR9283 (2.4G high power version) / AR9280 (dual frequency...
introduction Global Position System (GPS) satellites transmit small signal power and weak ground signals, coupled with unpredictable harsh environments and the emergence of dedicated GPS jammers [1], which directly cause GPS signals to be interfered with. In severe cases, it may not even work [1-2]. Therefore, in order to enable the GPS receiver to cope with more complex environments and improve its own anti-interference ability, research on GPS anti-interference technology has received...
Recently, Nature News published an article describing a new antenna design scheme, which shows that it will be able to produce an antenna that is one hundred times smaller than current small antennas. The new miniature antennas can be used in the future for wireless communications, Internet of Things, wearable devices, smartphones, and more. Figure, current small antenna products At present, the existing small antennas are all based on electromagnetic resonance, so the size of the antenna needs...
Handheld Cable Fault Tester/Communication Cable Detector/Cable Fault Analyzer Model: DP-GZ-24 Product Features and Specifications: Intelligent Pulse Test Method No need to view waveforms to directly display fault distance Fault nature Intelligent decision Full Chinese operation menu, LCD Display intelligent operation with backlight function operation, just press the test button failure test to complete, the screen visually shows the fault distance can test the local cable, coaxial cable, iron...
1 Characteristics of the development of optical fiber technology 1.1 The development of the network puts new demands on optical fiber The Next Generation Network (NGN) has sparked many ideas and debates. Some experts predict that no matter how the next generation network develops, it will reach three worlds, namely the IP world at the service level, the world of light at the transport level, and the wireless world at the access level. The next-generation transport network requires higher speed...
The summer is getting hotter and hotter, and the heat is coming soon. It is also a test for all parts of the car, especially if the air conditioner is not turned on in the car, it is also very difficult to bear. The car has been outside for a long time. When entering the car, it is already unbearable. It is too hot. If the temperature outside the car is 30°, the temperature inside the car can reach 40°. It can be imagined that with children, Remember not to leave your child alone in the car. In...
The key to Kymeta's smart antenna technology is that it provides a stable Internet connection, whether the user is on the move or the satellite itself is moving. This article refers to the address: http:// Author Emily Calandrelli is the producer and presenter of Fox TV's Xploration Outer Space show. Kymeta has developed a new type of "smart" antenna, and the company has recently completed an important test of its core technology, mTenna. mTenna is designed to provide Wi-Fi...
The RF signal power output by the radio transmitter is transmitted to the antenna through the feeder (cable) and radiated by the antenna in the form of electromagnetic waves. After the electromagnetic wave arrives at the receiving location, it is followed by the antenna (only a small fraction of the power is received) and sent to the radio receiver via the feeder. Obviously, an antenna is an important radio device that emits and receives electromagnetic waves. Without an antenna, there is no...
"The more antennas you cover, the more antennas you use, the more signals you have, and the more antennas you have, the better." ——Friends who feel that they are “common sense” can continue to read down the text. They feel that this kind of topic is weak, and Xiao Bian’s estimate of what will not come in. Still in that sentence, most of our dry cargo posts are for literacy. You are welcome to the gods to supplement and correct them... First of all, we should also note that the antenna...
Loved hands are blessed, and if you are interested, you can follow the instructions below. Of course, if you have a better method, you are welcome to share it with everyone. A. Antenna production Material: >1.5mm copper wire, 2M, as shown below Wiring diagram There was no camera when the antenna was made. A lot of friends didn't know how to make this antenna and wiring. PS had one, and I didn't understand. 2 meter pairs are removed, then made into the shape above, made into 4 squares...
It was a good feeling to use a silver-coated curtain cloth to make a projection screen, so I felt that I should contribute it as a special post to all of you for reference and good advice. Well, first show what we just made: Do not look at the screen is gray, oh, the projection effect is better than the brightness of the white photo paper. Let's talk about the production of curtains and talk about other aspects. First, for wooden frame with wood: 4, 30 yuan. In addition, please master the...
Solid insulated filled cable is suitable for pipe laying in coal mine pipe network and is mainly used for pipe laying. The inner and outer surfaces of the cable core and the shielding layer are filled or poured with petroleum jelly to prevent the intrusion of moisture in the coal mine. Under the common 30~C 60~C environmental conditions in coal mines , the mechanical and electrical properties of coal mining communication cables remain unchanged. It is used for the communication lines of...
In order to ensure the communication quality and extend the service life of the equipment, it is required to do well the maintenance of the line, adopt advanced methods to keep the line equipment constantly in good condition and optimal performance, and detect and eliminate all impact on line safety before the obstacle is formed. External factors. Measures to prevent strong electricity: Measures taken on the communications line: 1. Relocation or diversion, away from strong lines or maintaining...
The quality of silicone rubber cable and mining rubber cable How to distinguish the mine electric drill cable conductor Tinned copper wire, insulation material is natural styrene butadiene rubber, sheath is neoprene. With oil resistance, flame retardant and impact resistance, tear resistance Sex. The following table is a detailed introduction of the mining drill cable: Model name Main application range MZ-0.3/0.5 drill cable for coal mines, connection cable for electric drill under mine...
Shearer cable, myp mining rubber cable insulation resistance Red outer sheath specific model: MYPT, MYPTJ; Yellow outer sheath specific model: MYP; MCP. Black outer sheath specific models: MCPT, MY, MC, MZ, MZP, MYQ. Shearer cables, rubber insulation resistance of rubber mine cables for myp mine inquiry As a result of advances in science and technology, the production of brightly coloured outer sheaths has become a reality. Downhole cables have been used to differentiate the voltage levels and...
1. When laying cables, a safety officer shall be provided to ensure the safety of the entire laying process. 2. The laying of the cable project shall be specifically directed at the site to conduct unified command and dispatch of the cable laying. 3. The construction personnel who participate in the laying of the cable shall listen to the command and dispatch of the on-site command. They shall be different from each other and shall not leave the post without permission during the operation. 4....
Introduction: In recent years, frequent fire accidents have brought great challenges to the cable industry. When the cable encounters a fire, what steps should be taken? Or what should we do to prevent a cable fire accident before we encounter a fire? In order to prevent cable fire accidents, the following precautions should be taken: (1) Select cables that meet the thermal stability requirements. The selected cable, under normal conditions, can meet the heat requirements of the long-term rated...
Explosion-proof cable tray is a kind of safety cable tray used for flammable and explosive gas in the environment. It is commonly used in mines, oil fields, or other environments where flammable gas mixtures exist. In general cable discs, slight friction between plugs and sockets creates even dangerous sparks. Explosion-proof cable trays prevent this phenomenon from occurring. Explosion-proof cable drum is a professional safety cable disc manufactured by professional technicians combining these...
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.