Cell Phone Antennas

13,485 views
12,918 views

Published on

This presentation gives an insight about various antennas that were in use in cell phones and are being used in today's smartphones. Images of various phone models showing antenna used are included to give pictorial view of internal antennas

Published in: Technology, Business
5 Comments
10 Likes
Statistics
Notes
No Downloads
Views
Total views
13,485
On SlideShare
0
From Embeds
0
Number of Embeds
4
Actions
Shares
0
Downloads
687
Comments
5
Likes
10
Embeds 0
No embeds

No notes for slide

Cell Phone Antennas

  1. 1. NAVEEN KUMAR ●Teacher ●Researcher ● Technophile Cell Phone Antennas
  2. 2. Contents Cell Phone Antennas 2  The Icebreaker: First Cell Phone  Facts about the first cell phone  Trends in Cell-Phone Development  Antenna – An Introduction  Types of Antennas used in Cell phones  Retractable Monopole Antenna  Helical Antenna  Intenna  Planar Inverted-F Antenna (PIFA) ● Antennas in some of Today’s Smartphones ● SAR Measurement ● Advancements & Future Technologies ● References
  3. 3. The Icebreaker: First Cell-Phone 3 Dr. Martin Cooper at Motorola Inc. Thin phone: 7.2 [mm] Motorola ULTRA Cell Phone Antennas DynaTAC
  4. 4. 4 The first DynaTAC phone weighted around 2.2 Kgs (approx.) The battery life would last for only 20 minutes Nicknamed the ‘The BRICK’ Its cost was around 4,000 US Dollars Cell Phone Antennas Quick Facts About the First Cell Phone
  5. 5. Trends in Cell-Phone Development 5 Cell Phone Antennas
  6. 6. Antenna- An Introduction 6  An Antenna converts electromagnetic radiation into electric current, or vice versa.  Need of Antenna :  For transmission and reception of the radio signal.  Antennas are required by any radio receiver or transmitter to couple its electrical connection to the electromagnetic field. Cell Phone Antennas
  7. 7. Types of Antennas used in Cell Phones 7 Following are some of the antennas used in cellular phones:  External Antennas  Retractable Monopole (whips) antennas  Helical antennas  Internal Antennas  Microstrip antennas (MSA)  Planar inverted-F antennas (PIFA) Cell Phone Antennas
  8. 8. Retractable Monopole Antenna 8  An antenna that we can retract.  Basically a dipole antenna with top loading (looks like a hat) Cell Phone Antennas
  9. 9. Helical (Stubby) Antenna 9  When we open a cap, we can see a helical antenna. (looks like a spring)  We don’t have to retract. → It is convenient for users. Cell Phone Antennas
  10. 10. Ceramic Helical Antenna 10  High permittivity → Small antenna size Cell Phone Antennas
  11. 11. Intenna 11  Internal antenna: The antenna is embedded inside the phone which is not visible to us.  A phone case is strongly related to an intenna. Cell Phone Antennas
  12. 12. Intenna for 3G Phone 12  A metal strip pattern is served as an antenna. Cell Phone Antennas
  13. 13. Planar Inverted F Antenna (PIFA) 13 RadiatorSignal Input Coaxial Cable Original Form PIFA Integrated PIFA Cell Phone Antennas
  14. 14. Triple-Band Antenna 14  Intenna: internal antenna  Resonance: 900, 1800, 1900 [MHz] Cell Phone Antennas
  15. 15. PIFA for Cell-Phone 15 Cell Phone Antennas Resonance Graph
  16. 16. PIFA for Notebook 16 Cell Phone Antennas
  17. 17. Antennas for Galaxy Nexus & Galaxy S 17 Cell Phone Antennas Galaxy Nexus Galaxy S
  18. 18. Apple’s Antennagate 18  Death grip: when we touch a certain part of an iPhone 4, the ongoing call may gets dropped.  Stainless steel frame as multi-band antennas. Iphone 4 Cell Phone Antennas
  19. 19. SAR Measurement 19  SAR: Specific Absorption Rate  Our brain can absorb Electromagnetic (EM) power. The SAR measures how much power our head absorbs. Cell Phone Antennas
  20. 20. Advancements & Future Technologies Cell Phone Antennas 20
  21. 21. References Cell Phone Antennas 21 1) Kin-Lu Wong, “Planar Antennas for Wireless Communication”, Published by John Wiley & Sons, Inc., Chapter: 2, Pages: 26-65, 2003. 2) C. Rowell, E.Y. Lam, “Mobile-phone antenna design”, IEEE Antennas and Propagation Magazine, Vol. 54, No. 4, Page(s): 14 – 34, 2012. 3) Images from shutterstock.com, antenna-theory.com, istockphoto.com, empire.de, antenova.com, nearfield.org, gsmarena.com.
  22. 22. Cell Phone Antennas 22 Any Questions/Queries...
  23. 23. Where to find me.. 23 chd.naveen@gmail.com /chd.naveen @saini_naveen87 /NaveenKumar11 www.elixir-india.com
  24. 24. Cell Phone Antennas 24

×