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Antenna Design in M odern Wireless Communication Systems JING Liwen

Antenna Design in M odern Wireless Communication Systems JING Liwen. Outline. Definition of Antenna Antenna Glossary 2G and 3G mobile antenna design Brief Introduction of MIMO Antenna Design. Definition of Antenna.

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Antenna Design in M odern Wireless Communication Systems JING Liwen

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  1. Antenna Design in Modern Wireless Communication SystemsJING Liwen

  2. Outline • Definition of Antenna • Antenna Glossary • 2G and 3G mobile antenna design • Brief Introduction of MIMO Antenna Design

  3. Definition of Antenna • Antenna is a device used to transform an RF signal traveling on a conductor, into an electromagnetic wave in free space. • Michael Faraday (1831)

  4. Outline • Definition of Antenna • Antenna Glossary • 2G and 3G mobile antenna design • Brief Introduction of MIMO Antenna Design

  5. Antenna Glossary • Input Impedance • Return Loss/Standing Wave Ratio/S11 • Radiation Pattern • Beamwidths • Sidelobes • Polarization • Directivity and Gain • Efficiency • Bandwidth

  6. Outline • Definition of Antenna • Antenna Glossary • 2G and 3G mobile antenna design • Brief Introduction of MIMO Antenna Design

  7. 2G and 3G Mobile Antenna • 820–960 MHz and 1710–2170 MHz • Base Station (BS) • Handset Antenna

  8. Base Station Antenna • Indoor BS • 7dBi Wall-mounted case

  9. Base Station Antenna • Outdoor BS Linearly polarized antenna arrays gain (10 to 20 dBi) beamwidth (60°/90°/105°) down tilt (0° to 20°)

  10. Handset Antenna • WAN(Wide Area Network) CDMA, GSM, WCDMA, LTE, 4G (Primary Cellular Antenna) • PAN(Personal Area Network) Bluetooth, Wifi, UWB (Separate Antenna for Bluetooth and Wifi)

  11. IFA

  12. Samsung Galaxy S 1. Cell/PCS CDMA/EVDO Tx/Rx Antenna 2. Cell/PCS CDMA/EVDO Rx Only (as a diversity antenna) 3. 2.6 GHz WiMAXTx/Rx Antenna 4. 2.6 GHz WiMAX Antenna Rx Only (as a diversity antenna) 5. WiFi/Bluetooth Tx/Rx Antenna 6. GPS Antenna Rx Only

  13. IFA & PIFA • IFA(Inverted-F Antenna) • PIFA(Planer Inverted-F Antenna) 1998

  14. PIFA with slot Periodical Grooves

  15. HTC One Wifi & Bluetooth Cellular Service Both Receiving and Transmitting Diversity Tuned antennas Special antenna feeding Cellular Service

  16. Other Consideration • SAR(Specific Absorption Rate) Measurement A measure of how transmitted RF energy is absorbed by human tissue.

  17. Outline • Definition of Antenna • Antenna Glossary • 2G and 3G mobile antenna design • Brief Introduction of MIMO Antenna Design

  18. MIMO Antenna

  19. MIMO Antenna

  20. References [1]Morishita H, Kim Y, Fujimoto K. Design concept of antennas for small mobile terminals and the future perspective[J]. Antennas and Propagation Magazine, IEEE, 2002, 44(5): 30-43. [2] Rowell C R, Murch R D. A compact PIFA suitable for dual-frequency 900/1800-MHz operation[J]. Antennas and Propagation, IEEE Transactions on, 1998, 46(4): 596-598. [3]FiroozyN, Shirazi M. Planar Inverted-F Antenna (PIFA) Design Dissection for Cellular Communication Application[J]. Journal of Electromagnetic Analysis and Applications, 2011, 3(10). [4]Chiu C Y, Murch R D. Overview of multiple antenna designs for handheld devices and base stations[C]//Antenna Technology (iWAT), 2011 International Workshop on. IEEE, 2011: 74-77.

  21. Thank you

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