Categories

Free Space Path Loss Calculator

Tools

This calculator calculates the free space loss, given the distance, frequency, and gain, between two antennas.

Mixed-Frequency Signals

Worksheets - Antennas

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

Digital Communication

Worksheets - Antennas

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

Radio Circuits

Textbook

(a) Crystal radio. (b) Modulated RF at antenna. (c) Rectified RF at…

What Is the Skin Effect?

Textbook

The Skin Depth of Copper in Electrical Engineering As previously…

Introduction to Digital Communication

Textbook

In the design of large and complex digital systems, it is often…

Fundamentals of Radio Communication

Worksheets - Antennas

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

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.

Principles of Radio

Textbook

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

Selsyn (Synchro) Motors

Textbook

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

Electrical Signal Types

Textbook

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

BJT Quirks

Textbook

An ideal transistor would show 0% distortion in amplifying a signal.…

Passive Filter Circuits

Worksheets - Antennas

In very simple, qualitative terms, rate the impedance of capacitors…

Optical Data Communication

Textbook

A modern alternative to sending (binary) digital information via…

EIRP Calculator

Tools

A helpful tool for computing the Effective Isotropic Radiated Power (EIRP) of an antenna

AC Instrumentation Transducers

Textbook

Just as devices have been made to measure certain physical quantities…

Friis Transmission Calculator

Tools

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

RF Power Ratio Conversion Calculator

Tools

This tool is designed to convert power ratios to decibel

Waveguides

Textbook

A waveguide is a special form of transmission line consisting of a…

Microstrip Patch Antenna Calculator

Tools

This tool calculates the dimensions of the microstrip patch antenna given the desired operating frequency.

Electromagnetic Induction

Textbook

While Oersted’s surprising discovery of electromagnetism paved…

Parallel Wire Inductance Calculator

Tools

This tool is designed to calculate the inductance of two parallel wires

Noise Figure Calculator

Tools

A tool designed to calculate the noise figure of cascaded amplifiers

What is a Filter?

Textbook

It is sometimes desirable to have circuits capable of selectively…

Friis Transmission Calculator

Tools

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

Susceptance and Admittance

Textbook

What is Conductance? In the study of DC circuits, the student of…

What is Network Analysis?

Textbook

Generally speaking, network analysis is any structured technique used…

Finite-length Transmission Lines

Textbook

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

Review of R, X, and Z (Resistance, Reactance and Impedance)

Textbook

Before we begin to explore the effects of resistors, inductors, and…

Pi Attenuator Calculator

Tools

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

Network Protocols

Textbook

Aside from the issues of the physical network (signal types and…

Decibels

Textbook

The Bel is Used to Represent Gain In its simplest form, an…

T-Pad Attenuator Calculator

Tools

This calculator helps you determine the values of the resistors R1 and R2 to be used for a T-pad attenuator.

Resonant Filters

Textbook

So far, the filter designs we’ve concentrated on have employed…

EIRP Calculator

Tools

A helpful tool for computing the Effective Isotropic Radiated Power (EIRP) of an antenna

Basic Electromagnetism and Electromagnetic Induction

Worksheets - Antennas

When lightning strikes, nearby magnetic compass needles may be seen to…

Impedance Matching With Transformers

Worksheets - Antennas

Suppose you were to take a 3 kW electric heater rated for 240 VAC and…

Harmonic Phase Sequences

Textbook

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

Reflection Attenuator Calculator

Tools

This tool is designed to calculate the value of resistance R1 in a reflection attenuator.

Electric Shock

Worksheets - Antennas

It is sometimes said regarding electrical safety that, Ït’s not the…

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.

Principles of Radio

Textbook

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

Active Filters

Worksheets - Antennas

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

LED Resistor Calculator

Tools

An LED resistance calculator is perfect for when you have a single LED and need to know which resistor you should use.

Active Versus Passive Devices

Textbook

Passive Devices Components incapable of controlling current by means…

Switches

Worksheets - Antennas

What is the purpose of the switch shown in this schematic diagram?

Simple Circuits

Worksheets - Antennas

Shown here is the schematic symbol for a resistor: What is the purpose…

Series-Parallel Combination AC Circuits

Worksheets - Antennas

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

CMOS 555 Long Duration Minimum Parts Red LED Flasher

Textbook

PARTS AND MATERIALS Two AAA Batteries Battery Clip (Radio Shack…

Special-purpose Diodes

Textbook

Schottky diodes Schottky diodes are constructed of a metal-to-N…

555 Ramp Generator

Textbook

PARTS AND MATERIALS Two 6 volt batteries One capacitor, 470 µF…

Boolean Relationships on Venn Diagrams

Textbook

The fourth example has A partially overlapping B. Though, we will…

The DIAC

Textbook

Like all diodes, Shockley diodes are unidirectional devices; that is,…

AC Waveforms

Textbook

When an alternator produces AC voltage, the voltage switches polarity…

Correct use of Ohm’s Law

Textbook

Reminders When Using Ohm’s Law One of the most common mistakes…

Capacitor Types

Textbook

A capacitor is a passive two-terminal electronic component that…

Transistors, junction field-effect (JFET)

Textbook

Note that the direction of the arrow at the gate indicates the…

Introduction to Insulated-gate Field-effect Transistors

Textbook

As was stated in the last chapter, there is more than one type of…

Light-Pulse Switch

Worksheets - Antennas

It is fairly important to use large value resistors (10 MΩ works…

What is a Meter?

Textbook

A meter is any device built to accurately detect and display an…