Generalized Chebyshev Filter

In this week article, lets discuss the Generalized Chebyshev class filter. Firstly, here's a video on a Generalized Chebyshev class filter constructed using our EDS HF software. https://www.youtube.com/watch?v=cYPvdXOXlW4 The Design The Generalized Chebyshev filters have equiripple passband characteristics and flexibility in placing transmission zeros arbitrarily. The synthesis of this type of filter is based on …

Continue reading Generalized Chebyshev Filter

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 …

Continue reading The Inverter

How to Design Impedance Matching

When designing schematics, impedance matching is an importance process to ensure minimum loss of the design. When a schematic is mismatched, it will result in high reflection of the input signal, this would translate into transfer loss. A schematic that is matched will ensure the lowest possible loss theoretically, that is maximum power transfer. When …

Continue reading How to Design Impedance Matching

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 …

Continue reading Transmission Line Filter Using Richard’s Transformation

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 …

Continue reading Asymmetric Impedance Scaling and Frequency Transformation

Designing Lowpass Lumped Element Filter

What are filters? Water filters? Usually that's the confusion by laymen when talking about filters. Electronic filters are components in an electronic system that is used for isolating a bandwidth of frequency either to be used as a channel for data throughput or noise removal. Ever wonder why a radio can have so many stations? …

Continue reading Designing Lowpass Lumped Element Filter