Technological breakthrough are often than not influenced by the politics of the world. With 5G coming soon, will the China-US Trade War affect the development of 5G?
Single Mode Filter
Microwave and RF filters are of immeasurable importance to wireless equipment because they are always located between the input and output stages of the RF and microwave active circuits. Microstrip planar filters are preferred for integration in low-power transceiver systems because they possess the properties of compact size, flexible layout, low cost, and easy fabrication …
The Inverter
In the process of designing a lumped element filter, the circuit layout that is usually used to realize the filter is known as the "ladder network". Why ladder? Simply saying, because the layout looks like a ladder. The picture below shows a ladder network that is consisting of only resistors. In a lumped element lowpass …
Microwave Filter in Satellite Communication
In the previous article, we learnt how microwave filters are used in military around the world in the form of electronic warfare. Today, lets look at how microwave filters are used in satellites. The emergence of satellite technologies in the 1970s has further driven the needs for microwave filters after the increase in importance during …
Continue reading Microwave Filter in Satellite Communication
Microwave Filter in Electronic Warfare
It has been shown in the past article "The 5G Liver" that microwave filter plays an extremely and equally important role as the human liver which remove interference in any wireless communications. But besides than removing interference, microwave filter is also a key component in creating interference. When is that needed? you would say. It …
Designing Interdigital Filter
There are many distributed line topology that can be used to design a filter. One of these is the Interdigital topology. The interdigital utilizes multiple cascading coupled lines arranged in such a way that the termination of each stub (or called resonator) is alternate between short and open circuit. As one of the planar transmission …
Why are Cell Towers Placed on Hilltops?
I'm sure we all notice it, on top of a hill, one would often see a lone solitary telecommunication tower stand amidst the surrounding vegetation and trees. Although not a must, a telecommunication tower is often built on higher elevations. This is due to the mode in which microwave propagate, which is called Line-of-Sight (LOS) …
