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NAVEEN KUMAR
●Teacher ●Researcher ● Technophile
Cell Phone Antennas
Contents
Cell Phone Antennas
2
 The Icebreaker: First Cell Phone
 Facts about the first cell phone
 Trends in Cell-Phon...
The Icebreaker: First Cell-Phone
3
Dr. Martin Cooper at Motorola Inc.
Thin phone: 7.2 [mm]
Motorola ULTRA
Cell Phone Anten...
4
The first
DynaTAC
phone
weighted
around 2.2
Kgs (approx.)
The battery
life would
last for
only 20
minutes
Nicknamed
the
...
Trends in Cell-Phone Development
5
Cell Phone Antennas
Antenna- An Introduction
6
 An Antenna converts electromagnetic radiation into electric
current, or vice versa.
 Need of...
Types of Antennas used in Cell Phones
7
Following are some of the antennas used in cellular phones:
 External Antennas
 ...
Retractable Monopole Antenna
8
 An antenna that we can retract.
 Basically a dipole antenna with top loading (looks like...
Helical (Stubby) Antenna
9
 When we open a cap, we can see a helical antenna.
(looks like a spring)
 We don’t have to re...
Ceramic Helical Antenna
10
 High permittivity → Small antenna size
Cell Phone Antennas
Intenna
11
 Internal antenna: The antenna is embedded inside the
phone which is not visible to us.
 A phone case is stro...
Intenna for 3G Phone
12
 A metal strip pattern is served as an antenna.
Cell Phone Antennas
Planar Inverted F Antenna (PIFA)
13
RadiatorSignal Input
Coaxial
Cable
Original Form
PIFA
Integrated PIFA
Cell Phone Anten...
Triple-Band Antenna
14
 Intenna: internal antenna
 Resonance: 900, 1800, 1900 [MHz]
Cell Phone Antennas
PIFA for Cell-Phone
15
Cell Phone Antennas
Resonance Graph
PIFA for Notebook
16
Cell Phone Antennas
Antennas for Galaxy Nexus & Galaxy S
17
Cell Phone Antennas
Galaxy Nexus
Galaxy S
Apple’s Antennagate
18
 Death grip: when we touch a certain part of an iPhone 4, the
ongoing call may gets dropped.
 Sta...
SAR Measurement
19
 SAR: Specific Absorption Rate
 Our brain can absorb Electromagnetic (EM) power. The
SAR measures how...
Advancements & Future Technologies
Cell Phone Antennas
20
References
Cell Phone Antennas
21
1) Kin-Lu Wong, “Planar Antennas for Wireless Communication”, Published by John
Wiley & ...
Cell Phone Antennas 22
Any Questions/Queries...
Where to find me..
23
chd.naveen@gmail.com
/chd.naveen
@saini_naveen87
/NaveenKumar11
www.elixir-india.com
Cell Phone Antennas 24
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Cell Phone Antennas

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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

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

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