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Basic knowledge and test details of IQ quadrature modulator
  • 更新日期： 2021-12-28
  • 浏览次数： 4069
1.Summary In recent years, mobile communication has been rapidly developed and popularized in China, and the transmitter and receiver technology of wireless ……
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How to solve the impedance mismatch in the field of high frequency signal transmission
  • 更新日期： 2021-12-28
  • 浏览次数： 3271
In the high frequency domain, the signal or electromagnetic wave must propagate along the transmission path with uniform characteristic impedance. In case of impedance mismatch or discontinuity, part of the signal is reflected back to the transmitting end
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Research on RF microsystem integration technology system and its development form
  • 更新日期： 2021-12-28
  • 浏览次数： 4826
The three-dimensional heterogeneous integration technology of micro system is the most promising technology to realize the requirements of higher integration, higher performance and higher working frequency of RF electronic system in the future. This pape
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5g base station filter industry research collection
  • 更新日期： 2021-12-28
  • 浏览次数： 3275
The filter is the core RF device of the base station. The filter filters the electromagnetic wave signal and only allows the required signal to pass through. The main purpose is to solve the interference problem between different frequency bands and diffe
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Very detailed basic knowledge of impedance test
  • 更新日期： 2021-12-28
  • 浏览次数： 7606
一、Basic concepts of impedance measurement Impedance definition： Impedance is the total reaction of components or circuits to perio……
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Science spectrum: j-20 black technology -- conformal antenna, radar absorption, stealth, phase control, fire control, photoelectric aperture, Flight Helmet
  • 更新日期： 2021-12-28
  • 浏览次数： 6856
With the service of China's heavy stealth fighter j-20 and the formation of initial combat effectiveness, as well as the aircraft's increasingly high-profile participation in joint exercises and practical military training at sea, its high-definit
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Design method of RF circuit power supply and grounding
  • 更新日期： 2021-12-28
  • 浏览次数： 4092
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
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Dried food! How to design 5g array antenna with ANSYS HFSS
  • 更新日期： 2021-12-28
  • 浏览次数： 4697
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……
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Explain in detail the reasons for the fast charging of USB connector type C interface
  • 更新日期： 2021-12-28
  • 浏览次数： 4598
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
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Introduction to RF Engineers: how to design directional coupler circuits?
  • 更新日期： 2021-12-28
  • 浏览次数： 4444
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
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Several mainstream wireless technologies in industrial Internet of things
  • 更新日期： 2021-12-28
  • 浏览次数： 2698
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
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Faster than the star chain! China's Beidou satellite "short message" mobile phone will be listed at the end of the year!
  • 更新日期： 2021-12-28
  • 浏览次数： 2967
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
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