5G Antenna Solution for Tunnel Scenarios
4.1 New leaky cable
High-speed rail and subway tunnels are small and closed, with severe multipath reflection. Traditional 13/8 leaky cables do not support fre...
Entering the era of network convergence, the era of traditional telecom operators dominating the communications industry will be gone forever, and 3G operations are no exception. The Economist asked...
[color=#000][font=Helvetica, Arial, sans-serif]R87/G14 has powerful performance and rich on-chip resources. Using it as the main control of the reversing system can save a lot of extra chips, save spa...
0; clk_bit<='0'; begin process(clk_in,reset) begin if(reset='1') then clk_cnt<="0000"; clk_bit<='0'; elsif rising_edge(clk_in) then if (clk_cnt=4) then clk_cnt<="0000"; clk_bit<=not clk_bit; else clk_...
Question: I added the header file using the "scan all file dependencies" method, and the "include" of the current project already shows the "board.h" header file. However, when I "build all", it shows...
Abstract: The structure and working principle of the monolithic switching power supply chip TOPSwitch are introduced, a complete application circuit example of an ultra-wide input isolated regulated s...
From being a global leader to losing the market, Korean battery manufacturers have always wanted to regain the lost market and dignity, but facing Chinese battery manufacturers represented by CAT...[Details]
EtherCAT (Ethernet for Control Automation Technology) is a real-time industrial fieldbus communication protocol based on an Ethernet-based development framework. EtherCAT is one of the fastest indu...[Details]
introduction
Bluetooth technology is a short-range wireless communication technology designed to replace wired cables. It is a wireless communication technology standard developed by the SIG, ...[Details]
1 Introduction
In the mid-1960s, American scientist Maas conducted extensive experimental research on the charging process of open-cell batteries and proposed an acceptable charging curve for ...[Details]
According to foreign media reports, secondary battery materials company POSCO Future M announced that it has successfully developed two experimental (prototype) positive electrode materials for the...[Details]
Since the beginning of this year, price wars have intensified, new models have been launched one after another, used cars with zero kilometers have become a hot topic, and the industry's internal c...[Details]
On August 22, the National Energy Administration released the latest data, showing that by the end of July 2025, China's total number of electric vehicle charging infrastructure will reach 16.696 m...[Details]
This paper proposes a temperature real-time transmission and display solution based on LED optical data transmission, with Jingwei Yager low-power FPGA HR (Yellow River) series as the main controll...[Details]
While the current industry consensus is that autonomous vehicles are robots and that their systems are managed using robotics-developed thinking, there are also cases where autonomous driving is ac...[Details]
Teletrac Navman has launched the Multi IQ dashcam, a cloud-based solution designed for large commercial vehicle operators. It connects up to five cameras to cover the vehicle's interior, sides, and...[Details]
Over the past decade, the narrative surrounding fuel vehicles has been one of decline and replacement. Under the onslaught of new energy vehicles, traditional automakers have been forced to acceler...[Details]
There are many motors that can use thyristor speed control, and they can be used in almost all industries. Various types of motors, such as fans, pumps, AC motors, DC motors, torque motors, single-...[Details]
For self-driving cars, LiDAR is the sensory organ that allows them to "see the road." Simply put, its operating principle involves sending out a laser beam, receiving the echo, and ultimately gener...[Details]
Compiled from semiengineering
The industry is increasingly concerned about power consumption in AI, but there are no simple solutions. This requires a deep understanding of software and ...[Details]
0 Introduction
Portable terminals integrate a computer and display screen into a single device. Due to limited space in portable devices, previous designs often used a single-chip microcompute...[Details]