Broadband Printed Dipole Antenna With a Step-Shaped Feed Gap for DTV Signal Reception
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Broadband Printed Dipole Antenna With a Step-Shaped Feed Gap for DTV Signal Reception. Yun-Wen Chi, Kin-Lu Wong , and Saou-Wen Su IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 55, NO. 11, NOVEMBER 2007 Presenter : Tai-hung Lin. Outline. Introduction Antenna Design and dimensions

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Broadband Printed Dipole Antenna With a Step-Shaped Feed Gap for DTV Signal Reception

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Broadband printed dipole antenna with a step shaped feed gap for dtv signal reception

Broadband Printed Dipole Antenna With a Step-Shaped Feed Gap for DTV Signal Reception

Yun-Wen Chi, Kin-Lu Wong, and Saou-Wen Su

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 55, NO. 11, NOVEMBER 2007

Presenter:Tai-hung Lin


Outline

Outline

  • Introduction

  • Antenna Design and dimensions

  • Experimental Results and Discussion

  • Conclusion


Introduction

Introduction

  • Promising planar antenna types

    • Planar inverted-F antennas(0.25λ , PIFAs).

    • Patch antenna.

    • Printed monopoles / dipoles antenna.

    • Chip antenna( plastic , foam , ceramic bases)

    • Slot antenna (0.5λ).

    • Loop antenna (1λ).


Antenna design and dimensions 1

Antenna design and dimensions(1)

Rectangular shape Size : 20 × 227mm2 .

Two asymmetric radiating portions of arm 1 andarm 2.


Antenna design and dimensions 2

Antenna design and dimensions(2)

  • DTV (Digital television) bandwidth 470 ~ 806MHz.

  • Printed dipoles antenna(約0.5λ).

  • WLAN 波長(空氣)

  • 天線長度為 267mm (L+2W) /λo= 0.418λ


Experimental results and discussion 1

Experimental Results and Discussion(1)

Bandwidth: 340MHz , 53%


Experimental results and discussion 2

Experimental Results and Discussion(2)

Bandwidth: 510~680MHz , 28.5%


Experimental results and discussion 3

Experimental Results and Discussion(3)


Experimental results and discussion 4

Experimental Results and Discussion(4)


Radiation patterns 2 d

Radiation patterns (2-D)


Antenna gain and radiation efficiency

Antenna gain and radiation efficiency

Antenna gain :1.5 to 2.8 dBi

Radiation efficiency : 60%↑


Conclusion

Conclusion

  • A broadband printed dipole antenna with a step-shaped feed gap for DTV signal reception in the 470–806 MHz band has been proposed.

  • The obtained impedance bandwidth (2.5:1 VSWR) reaches 340 MHz (470–810 MHz) or about 53% centered at 640 MHz.

  • The wide operating band, stable radiation characteristics (60%↑) have also been obtained.


Y un wen chi

作者 : 郗韻文(Yun-Wen Chi)

  • 手機天線設計競賽-

    • 2006、2008-冠軍

    • 2007-佳作

      http://www.mobilehero.com/


Thank for your attention

Thank for your attention!


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