Editor’s Note: As we say good-bye to 2015, we look back at
some of our most shared blogs of the year. We covered a wide range of network
infrastructure topics and we hope you enjoy revisiting some of these popular
posts. This blog first appeared on November 30, 2015.
you know when microwaves were first used in communication? Do you know when the
first digital microwave radio was introduced? If you don’t know these answers,
then it’s time for a brief history lesson.
microwave systems have assumed a position of considerable importance in the
telecommunication field. To understand
why, let’s take a look at some early examples of long-distance communications and how microwave has emerged as a great option. This option dates back to the early 1930s.
first formal use of microwave was a
relay across the English Channel in 1931. Data was transmitted over a bidirectional 1.7 gigahertz link, 64
kilometers between Dover, UK and Calais, France. By the late 1940s and
early 1950s, microwave relay systems
began to play a prominent role in communications. In 1976, the first
digital microwave radio was introduced.
To support the higher
data rates required for connecting 3G cell sites to the network, there was a
lot of pressure on microwave equipment vendors to push the envelope. In 2008, the
development of adaptive modulation radio enabled a microwave link to vary its
data rate according to the atmospheric conditions. To address today’s consumers’
ever increasing appetite for data, microwave radio vendors continue to create
radios with more complex modulation schemes.
you interested in learning more about the design and licensing of
point-to-point microwave communication systems? The experts at Comsearch developed the SP6700
Microwave Path Engineering Fundamentals course for you. Comsearch’s experts in microwave
design and frequency engineering have helped to design more than 200,000
microwave paths since 1977.
course starts with a brief history of
communications as background for microwave systems, followed by a look at
the basic components of a microwave path and how they interconnect. Next, it
examines propagation between the two path endpoints in detail and looks at what
constitutes a good microwave path design. It also explores various path
reliability computational methods and discusses the value of field surveys and the equipment used.
final set of lessons focus on the microwave spectrum. The microwave spectrum runs roughly from about 1 to 100 GHz. Within
those bands, there’s a finite amount of available spectrum arranged by specific
frequencies. The designer often works in conjunction with a frequency
coordinator to ensure that the new design will not interfere with incumbent
systems or itself. This introduces the concept of interference analysis and
frequency planning. The course concludes with the U.S. Prior
and U.S. Federal Communications Commission licensing of the microwave system.
What else do you want to
know about microwaves?