一、Basic concepts of impedance measurement Impedance definition： Impedance is the total reaction of components or circuits to perio……

The circuit board layout of radio frequency (RF) circuit shall be based on understanding the basic principles of circuit board structure, power wiring and grounding. This paper discusses the relevant basic principles, and provides some practical and verif

5g - the fifth generation wireless communication technology, as a global hot topic, is an indisputable fact. As many experts have said, this technology will bri……

There are two main reasons why the USB type interface of golden navigation mark charges fast. One is that the type interface developed by golden navigation mark kinghelm has four power lines. The power line is thick and the allowable current is large. Of

In radio frequency (RF) applications such as automotive radar, 5g cellular and Internet of things, the use of RF sources in electronic systems is increasing day by day. All these RF sources need to try to monitor and control the RF power level without cau

Large scale production scenarios involve a large number of equipment, production application systems, workers and products. Stable, high-speed and easy to manage wireless networks are essential requirements. Wireless communication technologies of i

If you still think that mobile phones can't communicate directly with satellites, you're really out of date! Mobile phones supporting beidou-3 satellite short message function will be available at the end of this year! Earlier this year, ordnance

5g has been fully commercialized. With the continuous penetration of 5g in the vertical industry, people's idea of 6G is gradually put on the agenda. Facing……

On April 14, Meng Fei and his partners boarded the ship again and headed east along the muddy yellow Yangtze River Estuary. The captain doesn't even need navigation. After all, he has run countless times for the "man" on the sea. From a dist

Recently, in order to implement the 14th five year plan for national economic and social development of the people's Republic of China and the outline of long-term objectives for 2035 and the national 14th five year plan for cultural reform and develo

Spectrum type Traditionally, cellular networks work in authorized spectrum and Wi Fi works in unauthorized spectrum. However, in the 5g era, this division has gradually become blurred. On the one hand, some countries, such as Germany, the United Kingdo

Antenna size and frequency Generally, the relationship between the size of the designed antenna and the operating frequency of the antenna is: Antenna length=C/(2f) where C is the speed of light and f is the operating frequency of the antenna