In the frequency band greater than 10GHz, PCB microstrip printed antenna has obvious advantages over waveguide slot antenna, lens antenna, reflector antenna and other antennas. Mature PCB processing technology can effectively control the production cost of microstrip antenna. The multilayer hybrid technology of microstrip antenna circuit board, microwave RF board and low-frequency digital analog circuit [...]
Microwave usually refers to the electromagnetic wave in the frequency range of 300MHz ~ 300GHZ. Its wavelength is about 1m to 1mm. It can be further subdivided into decimeter wave, centimeter wave and millimeter wave radar plate. Its corresponding frequencies are UHF, ultra-high frequency, SHF and EHF. With the development of modern microwave technology, submillimeter [...]
Semiconductor materials are a kind of electronic materials with semiconductor properties (the conductivity is between conductor and insulator, and the resistivity is about 1m Ω· cm ~ 1g Ω· cm), which can be used to make semiconductor devices and integrated circuits. According to the type, it can be divided into element semiconductors and compound semiconductors. [...]
Looking at the current mobile phone brands, anyone who can develop their own chips can develop their own baseband. Only apple develops its own chips, but baseband needs to rely on a third party. Many people don't understand that Apple has developed mobile phones for more than ten years, and even the most difficult CPU [...]
Common devices on the circuit board include: resistance, capacitance, diode, triode, thyristor, touch switch, liquid crystal, light emitting diode, buzzer, various sensors, chips, relays, etc. Moreover, electronic components have different packaging types. The shapes of different types of components are the same, but the internal structure and uses are very different. For example, the components [...]
Technological advances drive us to create systems that interact with the environment and then make appropriate decisions. This level of automation requires powerful hardware, which is particularly suitable for sending and receiving signals from the surrounding environment. Radar PCBA is the key hardware of this work because they help detect objects or find targets. There's [...]
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1、 Solder paste stage 1.1 solder paste Solder paste (or solder paste) is the key material for welding. As Wikipedia, it is a material used in printed circuit board manufacturing to connect surface mount components to pads on the board " The paste is initially viscous. After heating, it is pasted on the components on [...]
The stability of multi-layer PCB material standard is the primary factor affecting the positioning accuracy of the inner layer. It is also necessary to consider the influence of the thermal expansion coefficient of substrate and copper foil on the inner layer of Multilayer PCB. From the analysis of the physical properties of the substrate used, [...]
Modern has very high requirements for electrical appliances and electronics. It must be safe to use, otherwise it cannot enter the market in large quantities. In order to avoid power connection between circuit board and circuit, circuit board potting adhesive is generally used for potting. The potted circuit board is wrapped by adhesive layer, which [...]