Latest Wireless/RF Education

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Coax Impedance Calculator

Tools

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

Coax Inductance Calculator

Tools

A calculator for computing the inductance of a coaxial cable.

Inverting and Noninverting OpAmp Voltage Amplifier Circuits

Worksheets - Wireless/RF

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

Principles of Radio

Textbook

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

Other Diode Technologies

Textbook

Varicap or varactor diodes A variable capacitance diode is known as a…

Link Budget Calculator

Tools

A Link Budget puts into account all gains and losses a signal goes through in a system as it is transmitted. The calculator calculates the power of the received signal given amplifier and antenna gains, and medium loss.

More on Spectrum Analysis

Textbook

Computerized Fourier analysis, particularly in the form of the FFT…

Microstrip Inductance Calculator

Tools

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

Microstrip Wavelength Calculator

Tools

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

Attenuators

Textbook

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

AC Instrumentation Transducers

Textbook

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

Characteristic Impedance

Textbook

The Parallel Wires of Infinite Length Suppose, though, that we had a…

Introduction to Digital Communication

Textbook

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

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.

Harmonic Phase Sequences

Textbook

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

EIRP Calculator

Tools

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

Absolute dB scales

Textbook

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

Polar Form and Rectangular Form Notation for Complex Numbers

Textbook

In order to work with complex numbers without drawing vectors, we…

Other Waveshapes

Textbook

As strange as it may seem, any repeating, non-sinusoidal waveform is…

Battery Ratings

Textbook

Because batteries create current flow in a circuit by exchanging…

Hysteresis

Textbook

Thyristors are a class of semiconductor components exhibiting…

OpAmp Oscillator Circuits

Worksheets - Wireless/RF

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

Inductance, Reactance, and Admittance Calculator

Tools

This calculator gives the reactance and admittance of an inductor or the inductance given the reactance of an inductor

Clipper and Clamper Circuits

Worksheets - Wireless/RF

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

DC Lab - Thermoelectricity

Textbook

In this hands-on electronics experiment, you will build a thermocouple to measure temperature changes and learn about the Seebeck effect.

Time Constant Equations

Textbook

Value of time constant in series RC and RL circuits   Time…

Factoring Equivalencies

Textbook

Factoring Identities :   a2 - b2 = (a + b) (a - b) a2 + 2ab + b2…

Complex Voltage and Current Calculations

Textbook

There are circumstances when you may need to analyze a DC reactive…

Relay Construction

Textbook

Electricity and Magnetism An electric current through a conductor will…

Solid-state Relays

Textbook

Limitations of Electromechanical Relays As versatile as…

“Long’’ and “Short’’ Transmission Lines

Textbook

In DC and low-frequency AC circuits, the characteristic impedance of…

Safety Grounding

Worksheets - Wireless/RF

In simple AC power systems, one of the two conductors is typically…

Edge-triggered Latches: Flip-Flops

Textbook

So far, we’ve studied both S-R and D latch circuits with enable…

Regulated Power Sources

Worksheets - Wireless/RF

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

Protective Relay Circuits

Worksheets - Wireless/RF

Protective relays are special power-sensing devices whose job it is to…

Logarithms

Textbook

Definition of a Logarithm     “log” denotes a…

Tesla Polyphase Induction Motors

Textbook

Most AC motors are induction motors. Induction motors are favored due…

Simple Vector Addition

Textbook

Remember that vectors are mathematical objects just like numbers on a…

Octal and Hexadecimal Numeration

Textbook

Because binary numeration requires so many bits to represent…

Voltmeter Impact on Measured Circuit

Textbook

Every meter impacts the circuit it is measuring to some extent, just…

Factorials

Textbook

Definition of a Factorial Denoted by the symbol “!” after…

Introduction to Bipolar Junction Transistors (BJT)

Textbook

The invention of the bipolar transistor in 1948 ushered in a…

Complex Number Arithmetic

Textbook

Since complex numbers are legitimate mathematical entities, just like…

AC Resistor Circuits (Capacitive)

Textbook

Pure resistive AC circuit: voltage and current are in phase.  …

Lock-out / Tag-out

Worksheets - Wireless/RF

In this motor control circuit, how would you ensure that there is no…

Building Series-Parallel Resistor Circuits

Textbook

Once again, when building battery/resistor circuits, the student or…

Digital Lab - 7-segment LED Display

Textbook

In this hands-on electronics experiment, you will control a 7-segment binary-coded decimal (BCD) display and learn about active-low and active-high logic inputs.

Clamper Circuits

Textbook

The circuits in the figure below are known as clampers or DC…

Contributors (2)

Textbook

Contributors to this chapter are listed in chronological order of…

Time Constant Equations

Textbook

Value of time constant in series RC and RL circuits   Time…

Basic Ammeter Use

Worksheets - Wireless/RF

Show how this ammeter would be connected to the light bulb circuit to…

Si Lab - Full-wave Bridge Rectifier With Output Filtering

Textbook

In this hands-on semiconductor experiment, build an improved full-wave rectifier with output filtering and learn about capacitive filtering in AC-to-DC power converters.

Coefficients of Specific Resistance

Textbook

Specific resistance at 20o C:  Material Element/Alloy ohm-cmil/ft…

Introduction to AC Motors

Textbook

After the introduction of the DC electrical distribution system by…

Four-Channel Audio Mixer

Worksheets - Wireless/RF

A very common misconception students have about potentiometers is the…

Current Divider Circuits

Worksheets - Wireless/RF

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

Scientific Notation

Textbook

In many disciplines of science and engineering, very large and very…

Operational Amplifier Models

Textbook

While mention of operational amplifiers typically provokes visions of…

Broadside Coupled Trace Inductance Calculator

Tools

This calculator helps you compute the inductance of a broadside coupled trace.