Basic knowledge of base station antennas and network applications
1. Antenna system and base station antenna composition
2. Antenna performance indicators
3. Antenna performance index test
4. Applicat...
Scanning tunneling microscope (STM) may sound unfamiliar at first.
But its status in the scientific community is extraordinary - it allows humans to observe the local structure image of the surface la...
When I convert AD to gerber file and import it into CopperCam, the imported circuit diagram is wrong. The circuit diagram imported by CopperCam is not the circuit diagram drawn by AD. Can any expert s...
[i=s]This post was last edited by jinglixixi on 2021-9-25 13:15[/i]The ESP32-Audio-Kit audio development board, together with the library file FastLED.h, can easily control the display effect of the W...
The previous article ( 【i.MX6ULL】Driver Development 4--Lighting up LED (Register Version) ) introduced how to directly operate the register in the driver to light up the LED. This article introduces a...
Signal integrity design is increasingly valued in product development, and there are many types of signal integrity testing methods, including frequency domain, time domain, and some comprehensive ...[Details]
On August 5, 2023, the 2023 Huawei Smart Travel Ecological Summit was successfully held. Huawei officially released HUAWEI HiCar 4.0, with the deep integration of mobile phones and cars as the core h...[Details]
According to foreign media reports, the US Department of Commerce has begun an investigation into Seagate for allegedly illegally selling hard drives to Huawei. Last year, the US government further t...[Details]
/* * Copyright (c) 1988 Regents of the University of California. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provi...[Details]
On June 25-26, the 2021 Fifth Jiwei Semiconductor Summit with the theme of "The Heart and the Core are Imprinted, and the Changes are Kunpeng" was officially held in Haicang, Xiamen, and lasted for t...[Details]
In today's rapidly changing era, the innovative technology of electric vehicles is not limited to improving performance or increasing mileage. Its deeper impact is changing our fundamental view and...[Details]
1. Component and circuit board measuring instruments
Electronic components are the most basic parts used in the information industry and are of great importance. Components mainly include R, L, C...[Details]
Using LCD panels, information can be displayed in many ways. For example, how to draw the user's attention to a specific part of the LCD panel? One way that does not require any additional segments...[Details]
1. Types of abnormal interrupts in ARM: Abnormal interrupt name Meaning Reset When the processor reset pin is valid, the system generates a reset exception interrupt, and the program jumps to th...[Details]
On December 19, Redmi K30 product manager and Redmi ID designer @画东画西MI revealed the Redmi K30 Pro for the first time when interacting with Mi fans. A Mi fan asked a question, hoping that the...[Details]
As one of the current battery types for electric vehicles , lithium iron phosphate batteries are characterized by relatively stable thermal stability, low production cost, long service life, etc. H...[Details]
1. RS485 technical parameters The voltage difference between the two lines is 2~6V, compatible with TTL level 10m distance, maximum speed 35Mbps. 1km distance, 100Kbps Generally supports up to 32 nod...[Details]
OFweek Cup 2022 China
Robot
Industry Annual Awards (abbreviated as OFweek Robot Awards 2022) is jointly organized by OFweek, China's high-tech industry portal, and its authoritative robo...[Details]
introduction A voltage transformer is a special transformer used to convert high voltage into low voltage. Under normal use conditions, the secondary voltage is substantially proportional to the pri...[Details]
【Abstract】
The interference path of
switching
converter noise provides coupling conditions for the interference source and the interfered equipment, and the study of its common mode inte...[Details]