RF Frequently Asked Questions. RF (Radio Frequency) FAQ.
RF (radio frequency) denotes to the use of electromagnetic radiation for transferring information between two circuits that have no direct electrical connection.
Electromagnetic Radiation Spectrum
The electromagnetic radiation spectrum is the complete range of the wavelengths of electromagnetic radiation, beginning with the longest radio waves (including those in the audio range) and extending through visible light (a very small part of the spectrum) all the way to the extremely short gamma rays that are a product of radioactive atoms.
Electromagnetic radiation results from the physics of the electromagnetic field
Total range of frequencies or wavelengths of electromagnetic radiation. The spectrum ranges from waves of long wavelength (low frequency) to those of short wavelength (high frequency); it comprises, in order of increasing frequency (or decreasing wavelength): long-wave radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X rays, and gamma rays. In a vacuum, all waves of the electromagnetic spectrum travel at the same speed, 299,792,458 m/s (186,282 miles/second).
The RF spectrum is divided into several ranges, or bands. With the exception of the lowest-frequency segment, each band represents an increase of frequency corresponding to an order of magnitude (power of 10). The table depicts the eight bands in the RF spectrum, showing frequency and bandwidth ranges. The SHF and EHF bands are often referred to as the microwave spectrum.
Radio Milestones
1888: Heinrich Hertz, German physicist, gives lab demo of existance of electromagnetic waves at radio frequencies
1894: millimeter wave (mmWave) Sir J.C. Bose during the last 3 years of 1894
1895: Guglielmo Marconi demonstrates a wireless radio telegraph over a 3-km path near his home it Italy
1897: the British fund Marconi’s development of reliable radio telegraphy over ranges of 100 kM
1902: Marconi’s successful trans-Atlantic demonstration
1902: Nathan Stubblefield demonstrates voice over radio
1906: Lee De Forest invents “audion”, triode vacuum tube
feasible now to make steady carriers, and to amplify signals
1914: Radio became valuable military tool in World War I
1920s: Radio used for commercial broadcasting
1940s: first application of RADAR – English detection of incoming German planes during WW II
1950s: first public marriage of radio and telephony – MTS, Mobile Telephone System
1961: transistor developed: portable radio now practical
1961: IMTS – Improved Mobile Telephone Service
1970s: Integrated circuit progress: MSI, LSI, VLSI, ASICs
1979, 1983: AMPS cellular demo, commercial deployment (1G)
2019: 5G NR, mmWave, 802.11ax, Bluetooth Low Energy 5.2, Integration of wireless with AI/ML, VR/AR etc.
2030: 6G
Top Rated RF Radio Frequency Training, Courses & Certifications
| Course Name | Duration |
| RF Safety Training | 2 days |
| The Fundamental Physics of Electromagnetic Waves | 2 days |
| Modeling and Simulation RF Systems Training | 3 days |
| DAS Training | 3 days |
| RF Optimization Training | 2 days |
RF (Radio Frequency) FAQ
RF (radio frequency) denotes to the use of electromagnetic radiation for transferring information between two circuits that have no direct electrical connection.
Federal Communications Commission (FCC) is in charge of it.
Electromagnetic waves can be characterized by a wavelength and a frequency. The wavelength is the distance covered by one complete cycle of the electromagnetic wave, while the frequency is the number of electromagnetic waves passing a given point in one second.
The frequency of an RF signal is usually expressed in terms of a unit called the “hertz” (abbreviated “Hz”). One Hz equals one cycle per second. One megahertz MHz equals 1 million cycles per second.
A radio frequency (RF) engineer’s primary responsibilities are to collect data, research radio frequency, and analyze gathered information to improve radar design.
Very high. In recent years, the surging demand for RF engineers has been driven by the evolution of 5G architecture and the Internet of Things (IoT).
This course is ideal for RF techs, installers, engineers, analysts, and anyone else who is interested in the biological effects of RF energy, Ionizing versus non-ionizing EME, FCC’s Maximum Permissible Exposure (MPE) standards, OSHA and industry RF Compliance.
Things like Protective Clothing, An RF Field Monitor, Keep a Safe Distance, Power Down or Move an Antenna and so on.