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The continuous updating and advancement of optical communication technology has led to the large-scale development of FTTH (Fiber to the Home), which has promoted the expanding market size of optical fiber quick connectors. In the fiber-optic wiring process, the fiber continuation method is generally divided into two types, one is fiber-optic hot-melt. This continuation method is more complicated, and is mostly used for long-distance optical signal transmission in large-scale laying; the other...
Card sleeve connector and card sleeve connector installation steps First, the card sleeve connector installation method: 1. Saw a suitable length of seamless steel pipe to remove burrs at the port. The end face of the pipe should be perpendicular to the axis with an angular tolerance of no more than 0.5°. If the pipe needs to be bent, the length of the straight section from the end face of the pipe to the curved portion must not be less than three times the length of the nut. 2. Put the nut and...
What is a wifi eyebrow? Wu Yifan perfectly controls the wifi eyebrows, this eyebrows, the ultimate value of the lack of value, like his handsome man. WIFI eyebrows can also be called broken eyebrows. Broken eyebrows are popular among European and American rap lovers. Their original intention is to use this kind of eyebrows to imitate scars, which can make them appear more aggressive and more cool. They use their own preferences, just break one or want to break a few breaks to strengthen their...
Harwin has announced the introduction of a new female-side contact connector for the Datamate connector that significantly increases the power level of the transmission. The T-Contact contact connector features a unique patented 6-finger design that is machined from a beryllium copper to increase the current capacity of a compact 2mm pitch interconnect system with up to 8.5A per contact. The new product, T-Contact, further improves the size, weight and power (SWaP) parameters of Harwin's...
In systems such as power systems, CDMA2000, DVB, and DMB, high-precision GPS clock systems (GPS synchronous clocks) are critical to maintaining proper system operation. This article refers to the address: http:// How to use GPS OEM for secondary development, generating high-precision clock generator is a hot issue. For example, in the DVB-T single frequency network (SFN), the synchronization accuracy reaches several tens of ns for the time synchronization requirement. How to carry out...
Texas Instruments (TI) today announced the launch of the SimpleLink GPS CC4000 solution, TI's first widely available GPS solution, further expanding the product line of easy-to-use SimpleLinkTM connectivity solutions. This stand-alone module minimizes complexity while adding GPS functionality to the product. For example, one-button positioning can be controlled by a single general purpose input/output (GPIO) hardware, and the National Marine Electronics Association (NMEA) data string...
Modern navigation has the requirement that the system can obtain the motion information of the carrier in real time and accurately. In the field of integrated navigation, the navigation system combined with satellite navigation (currently the most commonly used GPS) and strapdown inertial navigation (SINS) can make up for the shortcomings of individual navigation, and has the advantages of high precision, low cost and simple structure. It has become the most popular research direction. The...
BD/GPS (or GPS/GLONASS) dual-mode navigator is a navigation and positioning device based on navigation and positioning technology, GIS, wireless communication technology, and advanced technologies such as computer software and network. The navigator can display the dynamic position (longitude and latitude), time, status and other information of the carrier on the screen, navigate according to the user's needs, and simultaneously transmit the short message by position or other information...
GPS has evolved from an integrated product to a part of a comprehensive system solution. Original equipment manufacturers (OEMs) can choose to implement system integration with GPS chipsets, GPS modules or smart antenna modules. Each option has its own pros and cons, and the OEM needs to evaluate it based on the requirements of its entire system before making a choice. This paper provides a smart antenna solution selection idea, and discusses the performance comparison between the chip antenna...
GPS navigation market personal application products are divided into portable PND, car GPS and GPS navigation mobile phone several categories, and follow the law of your rise and fall, portable GPS and car GPS market share growth is bound to compete for the GPS navigation mobile phone market. Occupation rate. Although many research institutions have reported that the global PND will slow down in the future, GPS navigation mobile phones will grow at a faster rate. However, considering that...
1 Introduction This article refers to the address: http:// GPS attracts many users around the world with its high precision, all-weather, global coverage, convenience and flexibility, and high quality and low price. The wide application of GPS has changed the way people work, improves work efficiency, and brings huge economic benefits. Here, a design scheme of a handheld GPS positioning system based on the EM411 GPS receiving module and the PIC18F2550 microcontroller is proposed. The system...
With the rapid development and application of mobile communications, China's mobile phone industry has also continued to grow and develop. Of course, China's mobile phone users are also growing rapidly. In the RF devices of mobile phones, the mobile phone antenna is a passive device, and the mobile phone antenna is the only “tailor-made” device on the mobile phone. Its speciality and importance inevitably require that its R&D process requires very strict testing of the antenna...
GPS knowledge entry - features - classification articles: GPS core chip basic knowledge outlined. The following content is organized by the purchase network. For your reference. GPS core chip basic knowledge introduction Here we introduce some basic knowledge of the GPS core chip, I hope you can help. 1. The Development and Prospect of GPS Chips After 2003, the GPS chip industry has mushroomed. At present, there are more than 10 manufacturers that design and produce GPS chips, including SiRF,...
Double star positioning, large screen color map information comprehensive, NAVA color way F82 professional outdoor Beidou GPS handheld data collector evaluation feedback report (evaluation experience is easy,) This is a handheld data acquisition device for satellite positioning system. From the technical point of view, no matter how the results of the discussion, it will inevitably become a fur in the face of progressive scientific data; simply throw away the so-called fine research as the goal...
With the advancement of technology, network security has become the biggest concern today. In the last year, the encrypted WPA2 protocol was exploding security holes, which is really worrying. Nowadays, WiFi security has been saved. In order to enhance security, the WiFi Alliance has launched the WPA3 network protocol, which will be applied in 2018. The 2018 International Consumer Electronics Show (CES) is in full swing in Las Vegas, USA. The WiFi Alliance also participated in the show and...
There is no communication tool with the outside world except for one notebook. How long can you stay in a hotel room with only one bed? This is a reality show that was very hot before. At that time, the computer was connected by a network cable. How can the current "low-headed family" and "WiFi control" be bound by the network cable? What they need is more free and free network access. If this program is released today, I think that in addition to mobile devices and WiFi,...
Finally the plane can go online! As early as 7 am on January 18, the Eastern Airlines flight MU5137 took off from Shanghai Hongqiao Airport and the destination was Beijing, which is a flight that can use air Wi-Fi. Below the luggage rack, the logo for the WiFi that can be used on the aircraft has been marked. After the plane took off for 20 minutes, the reporter connected to WiFi. Experience discovery, in the air connection Wi-Fi, you must first open the flight mode, turn off the cellular data,...
With the rapid increase of the network, the demand for WiFi is increasing, and the quality requirements of WiFi are also rising. Nowadays, routers have entered the 11AC dual-band era. The 2.4GHz WiFi transmission distance is far, and the 5GHz WiFi transmission speed is fast. The two complement each other to improve our WiFi experience. However, in the face of some large-sized or complex-structured units, routers with more powerful performances will feel powerless. To this end, Tengda launched...
According to foreign media reports, HARMAN International (HARMAN InternaTIonal) announced on June 6 local time to launch a new 5G multi-frequency conformal antenna, which can be combined in a module and installed under the vehicle body panel. Modern intelligent networked cars may require up to 18 antennas to provide all relevant services to consumers, and they face many design and aesthetic challenges for automakers who want to make their products connectable while being simple and beautiful....
U-blox, a positioning and wireless chip and module manufacturer in Switzerland, announced that its global positioning and embedded 2G/3G wireless technology has been adopted by MobileHelp, a leading technology provider for M-PERS (Mobile-Personal Emergency Response System). Based on u-blox's LISA 2G/3G wireless modem module and MAX GPS module, MobileHelp's complete system includes a sophisticated portable alarm device that can be used in addition to home and home use. Features. Robert...
Since 2013, the global TD-LTE network has entered a period of vigorous development, and the deployment and development of domestic TD-LTE networks are also in full swing. Currently deployed in China, TD-LTE mainly uses the most advanced 8-channel technology in the world, and the impact of antennas on network performance is getting more and more attention. This paper summarizes and analyzes the problems in the first phase of TD-LTE deployment, and combines the latest developments in the current...
1 Introduction GPS attracts many users around the world with its high precision, all-weather, global coverage, convenience and flexibility, and high quality and low price. The wide application of GPS has changed the way people work, improves work efficiency, and brings huge economic benefits. Here, a design scheme of a handheld GPS positioning system based on the EM411GPS receiving module and the PIC18F2550 microcontroller is proposed. The system uses a dot matrix character LCD to display and...
As market competition intensifies, hardware devices are developing in an integrated direction. Antennas have also evolved from external evolution to embedded, and we will first introduce the types of antennas for this type of application : (1) On Board onboard: integrated with PCB etching, limited performance, very low cost, used in Bluetooth, WIFI module integration; (2) SMT mount type: the material is ceramic, metal sheet, PCB, and the performance cost is moderate, suitable for high-volume...
The antenna, as defined by Wikipedia, "is a device used to transmit or receive radio waves - or more broadly - electromagnetic waves." For example, in a wireless communication system, an antenna is used to transmit and receive electromagnetic waves in the radio frequency and microwave bands. In our smartphones, there is a built-in planar inverted-F antenna (PIFA) for receiving and radiating electromagnetic signals at 2.4 GHz and 5 GHz. Dipole antenna Since the antenna's regulation...
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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.