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Introduction: Compared with optical fiber communication, microwave point-to-point communication has many advantages such as good portability, high cost performance, and no land property rights. In many countries, they have become an alternative technology for fiber-optic connections between base stations. For example, in the United States, the United Kingdom, Japan and other countries, more than 85% of base station backhaul communications have been used by operators. 1. Introduction to...
According to the US Daily Science website, recently, in order to make communication equipment more convenient and reliable, scientists at the Ohio State University have developed a new method that can use a plastic film and metal wire to directly sewn radio antennas into clothing, a new antenna system. The range of radio signals that can be received is 4 times that of conventional antennas. Scientists say that next-generation communication systems may rely on sewing machines. Related research...
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...
What is an antenna? As we all know, an antenna is a device that converts electric energy (electric signal) into electromagnetic waves and transmits them to space. There are various types of antennas out there. Here are some examples. These are just some examples, and there are many other types. See how many you are familiar with. Nowadays, in most mobile communication devices, antennas are embedded in a small space. In a relatively old mobile phone, you may have seen the picture of the antenna...
It is expected to make wireless communication more efficient and consume less power On August 29, Beijing time, scientists at the University of Boston in the United States first developed a nano-optical optical communication system that can operate in the visible light band. The shorter wavelength of visible light will greatly reduce the size of a computer chip. The core technology of the new system is a nano-antenna that allows photons to move in groups and to fine-tune the interconversion of...
The omnidirectional whip antenna of Sputnik 1, the Soviet Union's first man-made earth satellite, made signals available to ground monitoring and control stations and even radio amateurs. Although The United States and The Soviet Union were enemies of The Cold War, they were in close contact. Two young men at The Johns Hopkins University Applied Physics Laboratory (APL), William Guier and George Weiffenbach, who made the antenna and amplifier, easily received the 20.005MHz signal sent by the...
Whether it is a military aircraft or a civilian aircraft, there will be several sets of communication equipment. Some are connected to satellites, and some are connected to the ground. No matter what kind of connection, you need an antenna. Even a small quadrotor drone needs to be positioned through a GPS antenna. Likewise, there are more and more array antennas on smart cars, such as various cellular frequency bands, Wi-Fi, and even 5G and its MIMO requirements, V2V (vehicle-to-vehicle), radar...
The antenna is a passive body, it does not need to provide power or energy, and will not amplify the input wireless signal. On the contrary, due to the signal attenuation caused by the feeder and the connector, the wireless energy released will be less than the energy input to the antenna contact. In fact, the antenna only plays the role of a directional amplifier, so that the sending and receiving energy is concentrated in a specific area of the space, and changing the energy distribution area...
Microwave Communication, Microwave Communication in English, refers to the way of relaying Communication by using Microwave as carrier. Microwave, is the frequency range of 300MHz~3THz electromagnetic wave (1THz=1000GHz), that is to say, the wavelength range is 1 meter ~0.1 mm (light speed = wavelength x frequency). In fact, microwave communications do not use the full frequency of microwaves. It mainly uses the 3ghZ-40ghz range. Engineers have defined and named parts of the microwave band...
24GHz Microstrip Smile Design Experience The main research of this paper is to introduce the application of the feeding method of the antenna engineering by comparing the 24GHz antenna design and the matching network design of the antenna, and the unequal feeding method is adopted. It is necessary to replace the vehicle radar and network auxiliary system with the vehicle network to design the 24GHz vehicle radar and vehicle network. 24GHz; low sidelobe; matching network; matching network In the...
Look at the "Chinese Sky Eye" and listen to the "heart" of the universe It took ten years to sharpen a sword, and now it takes twenty years to create the "eye of the sky". After more than 20 years of unremitting struggle, the country's most important weapon, "China's Sky Eye", stands proudly in the mountains and mountains of Guizhou. 5G Parabolic Dish Antenna, 4G Parabolic Dish Antenna ,Base Station Dish Antenna, Parabolic Dish Antenna
This paper mainly studies the design of the matching network applied to the 24GHz vehicle radar antenna. According to the actual needs in the project, the classification and design of the feed network of the array antenna are introduced. The electrical network has lower side lobe level and higher main lobe width than the traditional feed network. A feed network is designed by the Chebyshev synthesis method, which meets the needs of 24GHz vehicle radar antenna through simulation and...
The chip generally refers to the carrier of the integrated circuit, and it is also the result of the design, manufacture, packaging, and testing of the integrated circuit. It is usually an independent whole that can be used immediately. If the central processing unit (CPU) is likened to the heart of the entire computer system, then the chipset on the motherboard is the torso of the entire body. For the motherboard, the chipset almost determines the function of the motherboard, which in turn...
Antenna classification We are antenna factory ,produce all kinds of antenna .But how can you know all the antenna classification ? Please read below : 1.According to the nature of work, it can be divided into transmitting antenna and receiving antenna. 2. According to the purpose, it can be divided into communication antennas, broadcast antennas, TV antennas, radar antennas, etc. 3. According to the directivity, it can be divided into omnidirectional antenna and directional antenna. 4....
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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.