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Sometimes signals need to be filtered to remove high-frequency contributions. An overview on passive filters, with calculations and magnitude/phase plots.
Author: Vanadium - Last modified: 2021-08-25
How noise affects traces and planes on a PCB? How can very high-speed signals be used to transmit data? Which is the theory behind high-frequency design in communication systems? Transmission line is the answer to those questions!
Author: Vanadium - Last modified: 2021-08-28
The whole transmission lines theory begins with the study of the telegraphists' equations, based on the RLC model
Author: Vanadium - Last modified: 2021-08-28
Usually, transmission lines are analysed in the frequency domain but, in some cases, it could be useful to do some calculation in the time domain. Let's see how this type of analysis is done.
Author: Vanadium - Last modified: 2021-08-28
As we already introduced, impedance changes along a transmission line. Let's find a way to calculate it at every section of a transmission line!
Author: Vanadium - Last modified: 2021-08-29
Smith's chart is a useful graphic tool to visually calculate the impedance and the reflection coefficient at any point of the transmission line
Author: Vanadium - Last modified: 2021-08-29
A ready-to-use set of trigonometry and prosthaphaeresis rules
Author: Vanadium - Last modified: 2024-06-16
Here, the simplest linear regulator is presented to start the analysis of such a type of device
Author: Vanadium - Last modified: 2023-01-08
A ready-to-use page about integrals rules, properties and notable cases
Author: Vanadium - Last modified: 2024-06-15
What is an attenuator? Nothing really complicated but something that deserves our attention when working with EMI receivers
Author: Vanadium - Last modified: 2023-02-01
Electromagnetism basic laws and useful formulas
Author: Vanadium - Last modified: 2024-04-13
Analysis of the main parameters affecting the operating mode of a buck converter
Author: Vanadium - Last modified: 2023-06-02
Power dissipation calculations for a buck operating in CCM
Author: Vanadium - Last modified: 2023-06-02
Boost converter CCM and DCM analysis
Author: Vanadium - Last modified: 2023-06-02
AC small signal model for a generic buck regulator controlled in voltage mode (VMC)
Author: Vanadium - Last modified: 2023-06-02
AC small signal model for a generic buck regulator controlled in current mode (CMC)
Author: Vanadium - Last modified: 2023-06-02
Which are the main TL properties and what is the reflection coefficient
Author: Vanadium - Last modified: 2024-01-01
What are T and VSWR and why they are so important
Author: Vanadium - Last modified: 2024-01-02
A ready-to-use cheat sheet with methods and formulas to solve electrical circuit
Author: Vanadium - Last modified: 2024-01-03
Linear model of a transformer, with analysis of parasitic elements
Author: Vanadium - Last modified: 2024-01-04
Useful formulas and theoretical compendium for magnetic problems
Author: Vanadium - Last modified: 2024-01-05
What is STA and how it is automatically performed by EDA tools
Author: Vanadium - Last modified: 2024-01-11
A quick overview of the most used operational amplifier configurations, without considering non-idealities and other apparently superfluous aspects. All equations and figures shown here refer to the ideal op-amp model!
Author: Vanadium - Last modified: 2024-01-26
Electrical conductivity of some common elements and compounds
Author: Vanadium - Last modified: 2024-02-03
AWG (American Wire Gauge) values, from 0000AWG to 50AWG
Author: Vanadium - Last modified: 2024-02-03
A ready-to-use page about derivatives rules, properties and notable cases
Author: Vanadium - Last modified: 2024-04-14
3-phase 2-levels inverter model and power calculations
Author: Vanadium - Last modified: 2025-04-08
Linear model of a transformer, with analysis of parasitic elements
Author: Vanadium
Transmission lines - Part IV: Time domain
Usually, transmission lines are analysed in the frequency domain but, in some cases, it could be useful to do some calculation in the time domain. Let's see how this type of analysis is done.
Author: Vanadium
How to run a test-bench simulation with GHDL and analyse signals through GTKwave
Author: Vanadium
RMS values - also known as quadratic mean - calculated for different type of periodic waveform
Author: Vanadium
In an age dominated by digital technologies and rapid information exchange, the field of informatics stands as a cornerstone, weaving a tapestry that connects computing, data, and human interaction.
Author: Vanadium
Transmission lines - Part IX: Examples
Some numerical example for transmission lines
Author: Vanadium
A ready-to-use table of Laplace transforms, with properties and notable cases
Author: Vanadium
What is the Q factor of a capacitor and why it should be considered during early design stages
Author: Vanadium
Transmission lines - Part I: Introduction
How noise affects traces and planes on a PCB? How can very high-speed signals be used to transmit data? Which is the theory behind high-frequency design in communication systems? Transmission line is the answer to those questions!
Author: Vanadium
How to run LTSpice in batch mode and automate simulations and post-processing
Author: Vanadium