5 Minutes History of Electricity

Thales of Miletus Ever wonder what's the history of electricity, which has become a daily necessity to modern man? To start, we have to look into the history of electromagnetism. The history of Electromagnetism can be categorized into two eras; classical and modern eras. This covers from the classical era of the fundamental laws of …

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Transmission Line Filter Using Richard’s Transformation

Transmission Line (TL) In our previous article, we talked about the parasitic capacitance and inductance of circuits designed in lumped element. With majority of device and applications operating in high frequencies, especially with the introduction of 5G at millimeter wave, it is unfeasible to design filters using lumped elements. This is where transmission line type …

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Asymmetric Impedance Scaling and Frequency Transformation

https://youtu.be/acqtEmFCEjs Asymmetric filters are filters whose response are asymmetric in shape. They are useful for many applications that may require a different requirements between the upper and lower stopband. For example difference in upper/lower cut-off frequency, selectivity and insertion loss. This week video, see an example of an asymmetric filter design that applies impedance scaling …

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The Practical Applications of 5G in Medical: Remote Surgery and Earthquake Rescue

Previously, we had an article in the blog with the title “The 5G Point of View” and mentioned that 5G could revolutionize the services of health care and rescue operations. This week let’s look deeper into how this works. Here are 2 practical examples. 1. Remote Surgery Guangzhou, June 18. Two months ago, Guo Huiming, …

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