Different frequency ranges

31,663 views

Published on

Published in: Education, Business, Technology
1 Comment
13 Likes
Statistics
Notes
  • thanks for you share
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
No Downloads
Views
Total views
31,663
On SlideShare
0
From Embeds
0
Number of Embeds
8
Actions
Shares
0
Downloads
0
Comments
1
Likes
13
Embeds 0
No embeds

No notes for slide

Different frequency ranges

  1. 1. Different Frequency Ranges Prepared By: Devang Bhatti
  2. 2. <ul><li>ELF: 3-30 Hz, (Extremely Low Frequency) </li></ul><ul><li>SLF: 30-300 Hz (Super Low Frequency) </li></ul><ul><li>ULF: 300Hz-3KHz (Ultra Low Frequency) </li></ul><ul><li>VLF: 3-30 KHz (Very Low Frequency) </li></ul><ul><li>LF: 30-300 KHz (Low Frequency) </li></ul><ul><li>MF: 300KHz – 3MHz (Medium Frequency) </li></ul><ul><li>HF: 3-30 MHz (High Frequency) </li></ul><ul><li>VHF: 30–300 MHz (Very High Frequency) </li></ul><ul><li>UHF: 300 MHz – 3 GHz (Ultra High Frequency) </li></ul><ul><li>SHF: 3-30 GHz (Super High Frequency) </li></ul><ul><li>EHF: 30-300 GHz (Extremely High Frequency) </li></ul><ul><li>IHF: 300-3000 GHz (Insanely High Frequency) </li></ul>Acronyms used in the Band Designations
  3. 3. <ul><li>AM radio: 535 KHz to 1.7 MHz </li></ul><ul><li>Short wave radio: Bands from 5.9 MHz to 26.1 MHz </li></ul><ul><li>Citizens band (CB) radio: 26.96 - 27.41 MHz </li></ul><ul><li>FM radio: 88 - 108 megahertz </li></ul>Radio Frequency Ranges
  4. 4. <ul><li>Regardless of the terminology (Modes) used to characterize cellular technology (TDMA, CDMA, GSM, GPRS, Cellular, Digital, Analog, etc.). At this time there are only two frequency ranges available to INDIA carriers. </li></ul><ul><li>(1) 900 MHz </li></ul><ul><li>(2) 1800 MHz </li></ul>Cell Phones Frequency Ranges
  5. 5. <ul><li>Air Traffic Control Radar: 0.96-1.215 GHz </li></ul><ul><li>Global Positioning System (GPS) : 1.227-1.575 GHz </li></ul><ul><li>WiFi: 2.4 GHz for 802.11b and 802.11g. And 5 GHz for 802.11a </li></ul><ul><li>WiFi is a brand name. The underlying technology is known as Wireless Local Area Network (WLAN) </li></ul><ul><li>Microwave oven : 2.45 GHz </li></ul>Other Devices Frequency Ranges
  6. 6. <ul><li>Bluetooth is essentially a cable replacement technology, allowing electronic devices such as cell phones, modems and printers to talk to each other wirelessly. It operates in the license-free band at 2.45 GHz. The band is divided into 79 channels, each 1 MHz wide. </li></ul>Bluetooth
  7. 7. <ul><li>Most radio astronomy observations are made in the band from about 30 GHz to 1 THz, but there are instruments planned for observations beyond 1 THz. </li></ul>Radio Astronomy The Green Bank Telescope (GBT), aka the Great Big Telescope. It is the world’s largest fully steerable radio telescope.
  8. 8. <ul><li>Electromagnetic radiation of extremely high frequency. </li></ul><ul><li>Frequency: 3x10 16 to 3x10 19 Hz </li></ul>X-Rays
  9. 9. <ul><li>Gamma Rays are high energy waves/particles that can penetrate deeply into solid objects. Their energy is sufficient to cause damage to living cells. Frequency: (10 18 – 10 21 ) Hz </li></ul>Gamma Rays
  10. 10. <ul><li>Gamma-rays are generated by: Supernova explosions Destruction of atoms Nuclear explosions Decay of radioactive material Neutron stars Black holes </li></ul>Gamma Rays (Cont…)

×