Categories

Fundamentals of Radio Communication

Worksheets - Software-Defined Radio

What does the acronym RF stand form, in reference to radio-related…

Principles of Radio

Textbook

One of the more fascinating applications of electricity is in the…

Design Project: Radio Transmitter

Worksheets - Software-Defined Radio

Research the FCC (Federal Communication Commission) guidelines on…

Selsyn (Synchro) Motors

Textbook

Normally, the rotor windings of a wound rotor induction motor are…

Microstrip Inductance Calculator

Tools

This calculator computes the inductance of a microstrip etched on a PCB.

Design Project: Pulse-Width Modulation (PWM) Signal Generator

Worksheets - Software-Defined Radio

What shape of voltage waveform would you expect to measure (using an…

Electromagnetism

Textbook

The discovery of the relationship between magnetism and electricity…

Friis Transmission Calculator

Tools

This calculator computes the power received by an antenna using Friis formula

Finite-length Transmission Lines

Textbook

A transmission line of infinite length is an interesting abstraction,…

RF Power Ratio Conversion Calculator

Tools

This tool is designed to convert power ratios to decibel

Coax Impedance Calculator

Tools

A helpful tool for calculating the impedance of a coaxial cable.

Three-phase Transformer Circuits

Textbook

Since three-phase is used so often for power distribution systems, it…

Q Factor and Bandwidth of a Resonant Circuit

Textbook

The Q, or quality, factor of a resonant circuit is a measure of the…

Microstrip Wavelength Calculator

Tools

A tool designed to calculate the guided wavelength inside a microstrip.

Coax Inductance Calculator

Tools

A calculator for computing the inductance of a coaxial cable.

Mixed-Frequency Signals

Worksheets - Software-Defined Radio

What is a harmonic frequency? If an oscillator circuit outputs a…

Absolute dB scales

Textbook

Decibel as Absolute Unit of Power It is also possible to use the…

Data Flow

Textbook

Buses and networks are designed to allow communication to occur…

Mutual Inductance

Worksheets - Software-Defined Radio

When an electric current is passed through a coil of wire, what…

Frequency and Phase Measurement

Textbook

An important electrical quantity with no equivalent in DC circuits is…

Attenuators

Textbook

What is Attenuators? Attenuators are passive devices. It is…

Pi Attenuator Calculator

Tools

This calculator helps you determine the values of the resistors R1 and R2 to be used for a Pi Attenuator.

Magnetic Fields and Inductance

Textbook

Whenever electrons flow through a conductor, a magnetic field will…

Atomic Structure

Worksheets - Software-Defined Radio

Shown here is a simplified representation of an atom: the smallest…

Meter Check of a Diode

Textbook

The Functionality of Diode Polarity Being able to determine the…

Harmonic Phase Sequences

Textbook

In the last section, we saw how the 3rd harmonic and all of its…

Bit Grouping

Textbook

The singular reason for learning and using the binary numeration…

Transistors, Hybrid

Textbook

Electromagnetic Induction

Textbook

While Oersted’s surprising discovery of electromagnetism paved…

Superconducting Devices

Textbook

Superconducting devices, though not widely used, have some unique…

Design Project: Dual-output AC-DC Power Supply

Worksheets - Software-Defined Radio

Safety is very important when designing and/or building a device…

Transistor Ratings and Packages (BJT)

Textbook

Like all electrical and electronic components, transistors are limited…

DC Branch Current Analysis

Worksheets - Software-Defined Radio

Don’t just sit there! Build something!! Learning to mathematically…

Shift Registers: Serial-in, Serial-out

Textbook

Serial-in, serial-out shift registers delay data by one clock time for…

AC Circuit Equations

Textbook

Inductive reactance Capacitive reactance Impedance in relation to R…

Ionization (gas-filled) Tubes

Textbook

So far, we’ve explored tubes which are totally “evacuated” of…

Design Project: Arbitrary Waveform Generator

Worksheets - Software-Defined Radio

What, exactly, is an arbitrary waveform generator, and for what…

Antenna Downtilt and Coverage Calculator

Tools

This calculator will determine the correct antenna downtilt angle given the heights of the antennas and distance between them.

Asynchronous Counters

Textbook

In the previous section, we saw a circuit using one J-K flip-flop…

Phase Rotation

Textbook

Three-Phase Alternator Let’s take the three-phase alternator…

Finite-state Machine

Textbook

Feedback is a fascinating engineering principle. It can turn a rather…

Electrical Signal Types

Textbook

With BogusBus, our signals were very simple and straightforward: each…

555 Timer Monostable Circuit Calculator

Tools

This calculator computes for the output pulse width of a 555 timer monostable circuit