In this course, we will cover some mathematical principles that are important for RF and communications engineering.
The topics covered include:
Included with the course are a Quick Reference Guide, containing all formulas and constants, plus access to the SatProf Toolkit desktop app which contains RF calculators and single- and dual-segment link budget simulators.
If you had these topics in high school or university, these lessons will be a review. If you have not seen these topics before and you are having trouble with this lesson, there are many excellent textbooks and Internet resources which can help answer your questions or explain the topics in depth and in different ways.
In this lesson we will review: Algebra: rearranging equations, solving simultaneous equations. Linear equations; fitting an equation to two points. The quadratic equation and parabolas. Working with logarithms and exponentials, deciBels (dB), and power ratios. Triangles and Pythagoras's theorem. Trigonometry basics: radians and degrees; sines, cosines, and tangents, and their inverses. Using metrix prefixes to SI units in engineering.
Vector analysis is an integral part of communications engineering. In this lesson we will review: What is a vector? The difference between scalars and vectors. Adding and subtracting vectors. Three-dimensional vectors. Rectangular and spherical coordinates. The vector dot product. The vector cross product.
Although complex number theory was first developed in the 1700s, it was its use in the 20th century for digital communications that enabled the satellite and mobile revolution. In this lesson we will review: What is j (or i), the square root of -1? Real, imaginary, and complex numbers. Rectangular and polar notation. Phasors. Euler's Identity and Formula. Complex arithmetic. Complex operations.
Frequency domain analysis in the complex domain underpins modern signal theory. The Fourier Transform is the most well-known conversion between time domain and frequency domain representation of signals. In this lesson we will review: Time and frequency domain;The Fourier Transform; Fourier Transform formulas;Time/frequency domain duality; DFT and FFT; Important Fourier Transform pairs.
When triangles are wrapped onto the surface of a sphere, the rules of trigonometry are different. Familiarity with spherical trigonometry is important for analyzing problems such as orbits and antenna pointing directions. In this lesson we will review: What is a spherical triangle? Primary formulas: the Rule of Sines and the Rule of Cosines. Formulas for right triangles. Finding the Great Circle distance. Other applications of spherical trigonometry.