Cell Phone Antennas

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

1. ER. Naveen Kumar Assistant Professor, E.C.E Department Email: [email protected] Blog : info-techgeek.blogspot.com Cell Phone Antennas

2. Contents 10 January 2014 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. The Icebreaker: First Cell-Phone 3 Dr. Martin Cooper at Motorola Inc. Thin phone: 7.2 [mm] Motorola ULTRA 10 January 2014 Cell Phone Antennas DynaTAC

4. 10 January 2014 4 Cell Phone Antennas Quick Facts About the First Cell Phone

5. Trends in Cell-Phone Development 5 10 January 2014 Cell Phone Antennas

6. Antenna- An Introduction 10 January 2014 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. Types of Antennas used in Cell Phones 10 January 2014 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. Retractable Monopole Antenna 8 An antenna that we can retract. Basically a dipole antenna with top loading (looks like a hat) 10 January 2014 Cell Phone Antennas

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. 10 January 2014 Cell Phone Antennas

10. Ceramic Helical Antenna 10 High permittivity → Small antenna size 10 January 2014 Cell Phone Antennas

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 . 10 January 2014 Cell Phone Antennas

12. Intenna for 3G Phone 12 A metal strip pattern is served as an antenna. 10 January 2014 Cell Phone Antennas

13. Planar Inverted F Antenna (PIFA) 13 Original Form PIFA Integrated PIFA 10 January 2014 Cell Phone Antennas

14. Triple-Band Antenna 14 Intenna : internal antenna Resonance: 900, 1800, 1900 [MHz] 10 January 2014 Cell Phone Antennas

15. PIFA for Cell-Phone 15 10 January 2014 Cell Phone Antennas Resonance Graph

16. PIFA for Notebook 16 10 January 2014 Cell Phone Antennas

17. Antennas for Galaxy Nexus & Galaxy S 17 10 January 2014 Cell Phone Antennas Galaxy Nexus Galaxy S

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. 10 January 2014 Iphone 4 Cell Phone Antennas

19. SAR Measurement 19 SAR: Specific Absorption Rate Our brain can absorb Electromagnetic (EM) power. The SAR measures how much power our head absorbs. 10 January 2014 Cell Phone Antennas

20. Advancements & Future Technologies 10 January 2014 Cell Phone Antennas 20

21. References 10 January 2014 Cell Phone Antennas 21 Kin-Lu Wong, “Planar Antennas for Wireless Communication”, Published by John Wiley & Sons, Inc., Chapter: 2, Pages: 26-65, 2003. C. Rowell, E.Y. Lam, “Mobile-phone antenna design”, IEEE Antennas and Propagation Magazine, Vol. 54, No. 4, Page(s): 14 – 34, 2012. Images from shutterstock.com, antenna-theory.com, istockphoto.com, empire.de, antenova.com, nearfield.org, gsmarena.com.

22. 10 January 2014 Cell Phone Antennas 22

23. 10 January 2014 Cell Phone Antennas 23 Any Questions/Queries...