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Radio Frequency Components

Radio Frequency Components. EM Spectrum RF Spectrum. Spectrum. It contains every known frequency (or wavelength) for Electromagnetic Waves EM The waves range in frequency from 0 Hz to extremely high frequencies

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Radio Frequency Components

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  1. Radio Frequency Components EM Spectrum RF Spectrum

  2. Spectrum • It contains every known frequency (or wavelength) for Electromagnetic Waves EM • The waves range in frequency from 0 Hz to extremely high frequencies • The following charts dissect the EM spectrum based on the Canadian allocation of frequencies

  3. Regions of the EM Spectrum • The electromagnetic spectrum is divided up into 3 major regions: radio frequencies, light and rays. • The lowest frequencies have the longest waves and the lower energy content. • The highest frequencies have the shortest waves and the highest energy content.

  4. General RF (Radio Frequency) Spectrum • The EM spectrum contains all the frequencies in the universe. • Hence, the EM spectrum contains the Radio Frequency (RF) spectrum. • The RF spectrum goes from Very Low Frequencies (VLF) to Extremely High Frequencies (EHF).

  5. Radio Spectrum

  6. Source: http://www.ic.gc.ca/eic/site/smt-gst.nsf/vwapj/spectallocation-08.pdf/$FILE/spectallocation-08.pdf

  7. The frequency bands shown here are: • VLF (3-30 KHz) • LF (30-300 KHz) • MF (300 KHz to 3 MHz) • HF (3–30 MHz) • VHF (30-300 MHz) Source: http://www.ic.gc.ca/eic/site/smt-gst.nsf/vwapj/spectallocation-08.pdf/$FILE/spectallocation-08.pdf

  8. The frequency bands shown here are: • UHF (300 MHz to 3 GHz) • SHF (3 GHz to 30 GHz) • EHF (30 GHz to 300 GHz) Source: http://www.ic.gc.ca/eic/site/smt-gst.nsf/vwapj/spectallocation-08.pdf/$FILE/spectallocation-08.pdf

  9. Detail of Ultra High Frequency UHF Band • WiFi allocated in the ISM sub-band Source: http://www.ic.gc.ca/eic/site/smt-gst.nsf/vwapj/spectallocation-08.pdf/$FILE/spectallocation-08.pdf

  10. Detail of Super High Frequency SHF Band • WiFi allocated in the ISM sub-band Source: http://www.ic.gc.ca/eic/site/smt-gst.nsf/vwapj/spectallocation-08.pdf/$FILE/spectallocation-08.pdf

  11. Detail of Extra High Frequency EHF Band • There is an ISM sub-band (but is it assigned?) Source: http://www.ic.gc.ca/eic/site/smt-gst.nsf/vwapj/spectallocation-08.pdf/$FILE/spectallocation-08.pdf

  12. Spectrum represented in wavelengths • All RF (radio frequency) bands • Notice: microwave covers UHF, SHF and EHF • Light (IR, visible, and UV) • Gamma rays • Cosmic rays Sound and low frequency electrical signals Source: http://www.ic.gc.ca/eic/site/smt-gst.nsf/vwapj/spectallocation-08.pdf/$FILE/spectallocation-08.pdf

  13. RF Spectrum • Human kind has found ways to use the available (by the universe) electromagnetic spectrum. • The most widely deployed usage is radio telecommunications from a range of a few Kilohertz to dozens of Gigahertz. • The other range used in telecommunications is the range of infrared and visible light that lays in the Terahertz order.

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