Radio-frequency engineering

Radio-frequency engineering
Occupation
Names	Radio-frequency engineer Outside broadcastradio-frequency engineer;
Occupation type	Profession
Description
Competencies	Technical knowledge, management skills
Education required	Mathematics,physics,electronics,information technology
Fields of; employment	Radio, television, military
Related jobs	Technologist,broadcast engineer,engineering technician,technical operator

Radio-frequency (RF) engineeringis a subset ofelectrical engineeringinvolving the application oftransmission line,waveguide,antenna,radar,andelectromagnetic fieldprinciples to the design and application of devices that produce or use signals within theradio band,the frequency range of about 20kHzup to 300GHz.^[1]^[2]^[3]

It is incorporated into almost everything that transmits or receives aradio wave,which includes, but is not limited to, mobile phones, radios,Wi-Fi,and two-way radios. RF engineering is a highly specialized field that typically includes the following areas of expertise:

Design of antenna systems to provide radiative coverage of a specified geographical area by an electromagnetic field or to provide specified sensitivity to an electromagnetic field impinging on the antenna.
Design of coupling and transmission line structures to transport RF energy without radiation.
Application of circuit elements and transmission line structures in the design of oscillators, amplifiers, mixers, detectors, combiners, filters, impedance transforming networks and other devices.
Verification and measurement of performance of radio frequency devices and systems.^[4]

To produce quality results, the RF engineer needs to have an in-depth knowledge ofmathematics,physicsand generalelectronicstheory as well as specialized training in areas such as wave propagation, impedance transformations, filters and microstrip printed circuit board design.^{[citation needed]}

Radio electronics

Radio electronicsis concerned withelectronic circuitswhich receive or transmitradiosignals.

Typically, such circuits must operate atradio frequencyand power levels, which imposes special constraints on their design. These constraints increase in their importance with higher frequencies. Atmicrowavefrequencies, thereactanceofsignal tracesbecomes a crucial part of the physical layout of the circuit.

List of radio electronics topics:

Duties

Diagram of theelectric fields(blue)andmagnetic fields(red)radiated by adipole antenna(black rods)during transmission.

Radio-frequency engineers are specialists in their respective field and can take on many different roles, such as design, installation, and maintenance. Radio-frequency engineers require many years of extensive experience in the area of study. This type of engineer has experience with transmission systems, device design, and placement of antennas for optimum performance. The RF engineer job description at a broadcast facility can include maintenance of the station's high-power broadcast transmitters and associated systems. This includes transmitter site emergency power, remote control, main transmission line andantennaadjustments,microwave radio relay STL/TSLlinks, and more.

In addition, a radio-frequency design engineer must be able to understand electronic hardware design, circuit board material, antenna radiation, and the effect of interfering frequencies that prevent optimum performance within the piece of equipment being developed.

Mathematics

There are many applications ofelectromagnetic theoryto radio-frequency engineering, using conceptual tools such asvector calculusandcomplex analysis.^[5]^[6]Topics studied in this area includewaveguidesandtransmission lines,the behavior ofradio antennas,and thepropagation of radio wavesthrough the Earth's atmosphere. Historically, the subject played a significant role in the development ofnonlinear dynamics.^[7]

References

^A. A. Ghirardi,Radio Physics Course,2nd ed. New York: Rinehart Books, 1932, p. 249
^Signal Corps U.S. Army,The Principles Underlying Radio Communication,2nd ed. Washington, DC: U.S.G.P.O., 1922, p. 191
^Technical Manual TM 11-665: C-W and A-M Radio Transmitters and Receivers.Dept. of the Army, US Government Printing Office. 1952. p. 2.
^"How to Measure Requirement for RF Equipments".30 January 2018.
^Blaunstein, Nathan; Christodoulou, Christos; Sergeev, Mikhail (2016-10-14).Introduction to Radio Engineering.CRC Press.ISBN 9781315350080.
^Räisänen, Antti V.; Lehto, Arto (2003).Radio Engineering for Wireless Communication and Sensor Applications.Artech House.ISBN 9781580536691.
^Israel, Giorgio (2004). "Technological Innovation and New Mathematics: van der Pol and the Birth of Nonlinear Dynamics".Technological Concepts and Mathematical Models in the Evolution of Modern Engineering Systems(PDF).Birkhäuser,Basel. pp. 52–77.doi:10.1007/978-3-0348-7951-4_3.ISBN 9783034896337.

External links

Practical Guide to Radio-Frequency Analysis and Design

[1] A. A. Ghirardi,Radio Physics Course,2nd ed. New York: Rinehart Books, 1932, p. 249

[2] Signal Corps U.S. Army,The Principles Underlying Radio Communication,2nd ed. Washington, DC: U.S.G.P.O., 1922, p. 191

[TM11-665-3] Technical Manual TM 11-665: C-W and A-M Radio Transmitters and Receivers.Dept. of the Army, US Government Printing Office. 1952. p. 2.

[4] "How to Measure Requirement for RF Equipments".30 January 2018.

[5] Blaunstein, Nathan; Christodoulou, Christos; Sergeev, Mikhail (2016-10-14).Introduction to Radio Engineering.CRC Press.ISBN 9781315350080.

[6] Räisänen, Antti V.; Lehto, Arto (2003).Radio Engineering for Wireless Communication and Sensor Applications.Artech House.ISBN 9781580536691.

[7] Israel, Giorgio (2004). "Technological Innovation and New Mathematics: van der Pol and the Birth of Nonlinear Dynamics".Technological Concepts and Mathematical Models in the Evolution of Modern Engineering Systems(PDF).Birkhäuser,Basel. pp. 52–77.doi:10.1007/978-3-0348-7951-4_3.ISBN 9783034896337.

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