Designing a high-performance microwave filter can be a daunting task for RF engineers. The process involves analyzing stringent requirements such as center frequency, bandwidth, return loss, insertion loss, and more, which can become increasingly complex with higher-order filters or complex designs. The Problem During the designing phase, a RF engineer spent most of the time …
Continue reading Redefining Computer-Aided Tuning (CAT) with Reinforcement Learning
With the release of EDS HF v1.14, you may probably have notice a slightly different look. Many aspects of the software is improved on that aims to give a better experience to our users. Improvements are done to many aspects related to speed and performance when plotting, saving and drawing the schematic. We added more …
A high-performance filter is always desired for wireless communication systems and applications. However, its performance is limited by the technology used to realize the filter due to the inevitable losses inherited from each technology. For instance, microstrip filters experience higher loss compared to coaxial or waveguide types which have higher inherent quality factor (Q-factor) up …
Continue reading Designing Matched Bandstop Filter for Very High Frequency (VHF) Band
Its a long way since the first inception of the idea of our FILPAL EDS HF. Starting from the original Filter Design Software (no longer for sale), we at FILPAL starts to envision a DIY-like schematic drawing and simulation software that is both easy to use and affordable to both students and industry alike, which …
https://youtu.be/AoXyVn3Bz6A A resonant circuit is a circuit containing both an inductor and a capacitor – and therefore, both inductive and capacitive reactances. Its purpose is to produce a reflection zero that will ensure maximum transmission of the signal at a particular frequency. At this frequency, the impedance of the resonant circuit is at its lowest, allowing …
What is a resonator? In simple words, it is any circuit that produces a resonance at a particular frequency. A resonance frequency is when a frequency is exhibiting greater amplitude when compared to other frequencies. In some applications, resonance frequencies are undesirable as it could mean an anomaly in the response graph. For example in …
One of the distinctions that separates humans and animals is the ability of human race to create and use tools. From using flintstones to create fires, to cranes for building constructions, to software for designing. The invention of tools helps speed up and simplify the process of work, thus enabling more humans to handle more …
In many countries, the Covid outbreak has caused many setbacks in industries around the world. With the restrictions in movement and the slowing down of the economy, many due dates or releases of new products would have to be delayed. In FILPAL, we face similar challenge with the Movement Restriction Order (MCO) in place. However, …
Directional couplers are four-port circuits consists of through, isolation, coupling ports. An ideal directional coupler is lossless and has all ports are matched. One of the most common couplers is formed by a pair of coupled transmission lines. When two unshielded transmission lines are in close proximity, power can be coupled from one line to …
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 …
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