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Under the trend of the Internet of Everything, wireless communication modules have become an integral part of all types of electronic devices, and the quality of communication of modules depends to a large extent on the rationality of antenna design. This article describes how to choose the right antenna and to play the best performance of the antenna. With the advancement of technology, in order to save the development cycle, many manufacturers have introduced a variety of finished antennas....
Into August, we are closer to 2015. As women's brand one of Ann Tina , there are still a lot of things are not done during the year. Now, in the second half of 2014, Anjina Women's Brand Investment Season is underway. Interested distributors can now enter the family of the Anjina brand and grow together with the brand enterprises. You will reap more ... ANTENNA ANTIENA WOMEN FROM MILAN, ITALY, CHINA SINOTRANSK SINOCHEMISTRY invested heavily in the establishment of ANTINA FASHION...
This article describes an easily fabricated 802.11b/g vertically-polarized omnidirectional antenna that is extremely rugged and has a gain of approximately 5-6 dBi. Many sites have detailed instructions for making 2.4 GHz omnidirectional antennas. However, these antennas are quite complex to implement, and many small coaxial cables with very precise cuts are used. At the same time you must also know the data of the coaxial cable used, because most of the dimensions are based on this. Some...
In the 4G LTE system, since the antenna introduces MIMO technology, a well-known term “antenna port” in the daily work of network optimization is often mentioned, then what is the use of this antenna port or what is the original intention of the design? Consider it? Don't worry, listen to Xiao Bian slowly. In the 23G system, there is no concept of an antenna port, and the concept of the channel is often mentioned. For example, one of the most proud technologies of the 3G TD-SCDMA system is...
1. RFID antenna manufacturing method The antenna manufacturing technology mainly uses the coil winding method in the low frequency range. The general UHF and high frequency antenna manufacturing methods mainly include the etching method, electroplating method, and printing method. 1.1 Etching First, a resist ink was printed on a metal foil-covered PET film to protect the antenna circuit pattern from being etched away during etching, followed by baking, etching, and cleaning to obtain the...
With the rapid development of wireless communication technologies, miniaturization and large-capacity communication systems have become the main development goals that have come so far. Because dual-polarized antennas have dual-channel communication with the same frequency band, improve communication capacity, achieve duplex operation, can improve system sensitivity, and resist multi-path effects, they are increasingly favored by people. Because the microstrip patch antenna has many advantages...
The core of the active phased array antenna design is the T/R component. The main factors considered in the T/R module design are: the number of different types of integrated circuits, the level of power output, the size of the received noise figure, and the accuracy of amplitude and phase control. At the same time, the design of the array of radiating elements is also crucial. 1 chip design Ideally, the circuitry of all modules needs to be integrated on a single chip. In the past few decades,...
With the rapid development and maturity of the Internet of Things technology, ultra-low power wireless sensors have become an important component of the Internet of Things. Wireless sensor networks deploy a large number of sensor nodes in the monitoring area and use radio communication to form a multi-hop self-organizing network system with dynamic topology, which has been widely used. However, if the sensor node with the traditional power supply mode runs out of battery, it needs to replace...
1 Introduction In some wireless sensor network systems that need to search and locate ground and near-ground targets, such as ground penetrating radar systems for border detection and recognition, Vehicle AnTI-Collision systems, etc., It is required that the antenna be highly radiated within a certain angle with the ground. The top of the antenna is not in the detection service area. The radiation in these areas causes waste of energy. External signals also interfere with the system and need to...
Over the past two decades, we have witnessed a shift in mobile communications from 1G to 4G LTE. During this period, the key technologies of communications are changing and the amount of information handled has multiplied. The antenna is an indispensable component to achieve this leap-forward promotion. According to the definition of the industry, an antenna is an inverter that transforms a guided wave propagating on a transmission line into an electromagnetic wave that propagates in an...
Because of personal preference and professional reasons, I have written this article with you, and I would like to thank you for your enlightenment and support. As the demand for war changes and advances in science and technology, the "gold content" of air combat is also getting higher and higher. The development of fighter airborne radar is a typical example. In terms of appearance, the most intuitive part of the "evolution" of radar equipment is the change of the antenna....
1 Introduction This paper describes a new type of microwave broadband single-pulse antenna system working in the C~X band, including a sum comparator and a slot antenna array and a broadband power splitter. The research on broadband antennas is relatively early in the world, and there are many types of antennas for implementing broadband antennas, but they are mostly used for phased-array antenna arrays or single-beam antenna arrays, and there are few reports on broadband antennas for...
GPS and Beidou antennas can be manufactured with different technologies. Civil systems generally adopt a planar structure. For example, in mobile phones, linear polarization is mostly used. The military system uses a circular-polarized 3D structure and adapts to the installation environment where the terminal changes its position drastically. The comparison of antenna performance involves many factors. The best recognized in the industry is a four-arm spiral antenna loaded with a...
Central issues: The three most common antenna introduction Describe several parameters that must be considered when selecting an antenna solution: For applications where space is limited, chip antennas are a good choice, especially for frequencies below 1 GHz. Whip antennas perform best, quarter-wave antennas provide an efficient solution Antennas are an important component of an RF system and have a significant impact on performance. High performance, small size, and low cost are the most...
Center topic: Analyze UWB antenna performance and design requirements Introduce several common new ultra-wideband antennas solution: Requires ultra-wideband antenna bandwidth, high transmission rate, low power, low power consumption, accurate positioning, and strong anti-multipath capability High requirements for UWB antennas in terms of dispersion, volume and directionality In recent years, ultra-wideband short-range wireless communication has attracted great attention in the field of global...
I. Overview Constantly increasing the communication capacity and quality of communication systems is the eternal theme of wireless communication. With the rapid development of wireless communication technology, people have put forward more and more requirements on the design of the antenna. Using ultra-wideband (UWB) technology and multiple-input multiple-output (MIMO) technology has great potential in improving data transmission rate. MIMO technology can improve the signal-to-noise ratio of...
In the second half of the year, the electronics industry entered the peak season for demand, and the industry boomed. After 2009, the electronics industry entered a new round of economic cycle. In 2011, the electronics industry will maintain relatively stable growth, and the growth rate is expected to remain in single digits. With the arrival of the peak sales season in the second half of the year, the entire electronics industry will show a trend of low and high prices. The connector segment...
China Optical Fiber (03777) announced its interim results as of the end of June this year. During the period, the production capacity of fiber optic connectors was 9 million units, while the machine utilization rate was 118.9%, and the annual production capacity of soft optical cables was 13,000 kilometers. As for the wiring and The annual production capacity of auxiliary equipment in the engine room is 1,300 tons. Kong Jingquan, executive director and chief financial officer, said that due to...
Wifi module summary The Wi-Fi module, also known as serial Wi-Fi module, belongs to the Internet of Things (IoT) transport layer. Its function is to convert the serial port or TTL level to an embedded module that conforms to the Wi-Fi wireless network communication standard. The built-in wireless network protocol IEEE802.11b.gn Protocol stack and TCP/IP stack. The traditional hardware device embedded in the Wi-Fi module can directly use Wi-Fi to connect to the Internet, and is an important part...
Smart wearable devices with positioning capabilities, some will choose to provide a separate GPS module to provide location information, of course, another part is more inclined to use the antenna integrated positioning module. Engineers who have learned about IoT smart wearable products should all be aware that smart wearable products are generally small in size, and in order to increase their standby length, modules that need to be powered in smart wear will be preferred for low power...
Connectors that connect different circuit boards together. Whether it is a mobile phone or a smart hardware device, a large number of connectors are used. As a hardware engineer, you need to be familiar with the characteristics of various connectors and be able to properly plan what kind of connectors to use. The main categories and characteristics are as follows: (This article focuses on internal connectors for smart hardware products and does not involve external connections.) Board-to-board...
WIFI Probe Overview When one device sends information to another device through wireless transmission technology, other nearby devices of the same type can receive wireless information. WiFi probe technology is based on this principle. Specifically, when the WiFi device is in the listening range of the WiFi probe and the WiFi device (whether it is a terminal, a router or other WiFi device) sends any frame, no matter who the probe is, the probe can intercept it. It also analyzes some information...
Var videoObject = { container: '.video', variable: 'player', autoplay:true, html5m3u8:true, video:'http://media.elecfans.com/topic/gongkaike/2018/05/5965b161-529d- 11e8-ad6a-408d5c8db401/1/hls/index.m3u8' }; if (!!window.ActiveXObject) { videoObject.html5m3u8 = false } var player=new ckplayer(videoObject); Connection Types and Methods of Microchip's WiFi Module (MRF24WB0Mx Series) — Unraveling WiFi and Infrastructure Mode In today's connected world, the Microchip MRF24WB0Mx series of WiFi...
The communication distance of the wireless module is an important indicator. How to maximize the effective communication distance has always been a question of doubt. This article gives some explanations based on the debugging experience and the selection and use of the antenna. It is hoped that it will help the engineer to quickly debug the communication distance. First, the type of antenna With the advancement of technology, in order to save the development cycle, many manufacturers have...
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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.