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學生 : 李國彰 指導教授 : 賴永齡 老師 PowerPoint PPT Presentation


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學生 : 李國彰 指導教授 : 賴永齡 老師. Development of a low cost microwave mixer using a broad-band substrate integrated waveguide (SIW) couple ( IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS ). Outline. Abstract Introduction Design of the broadband SIW coupler

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學生 : 李國彰 指導教授 : 賴永齡 老師

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3372774

學生:李國彰指導教授:賴永齡 老師

Development of a low cost microwave mixer using a broad-band substrate integrated waveguide (SIW) couple

( IEEE MICROWAVE AND WIRELESS

COMPONENTS LETTERS )


Outline

Outline

  • Abstract

  • Introduction

  • Design of the broadband SIW coupler

  • Design of the single-balanced mixer

  • Experimental results

  • Conclusion

  • References


Abstract

Abstract

  • SIW coupler

  • Measured conversion loss 6.8dB

  • The wide-band response from 8.5 to 12GHz ( X-band)


Introduction

Introduction

  • The requirement Microwave and millimeter wave communication system

    -low-cost

    -high performance mixers

  • Proposed mixer is a single-balanced mixer

  • SIW coupler acts as the input and power delivery


Design of the broadband siw coupler

Design of the broadband SIW coupler

  • The propagation properties of the TE10-like mode in a SIW are very similar to that

    of the TE10 rectangular waveguide


Design of the broadband siw coupler1

Design of the broadband SIW coupler


Design of the broadband siw coupler2

Design of the broadband SIW coupler

  • “a” between the two rows of metallic vias determines the frequency band of the waveguide

  • The via diameter “D” is chosen to be

    equal or smaller than a tenth of the wavelength of the maximum operation frequency


Design of the single balanced mixer

Design of the singlebalanced mixer

  • Between the two diodes, another quarter-wavelength open-circuited stub at the LO frequency is adopted to prevent LO leakage

  • At the IF port, a stepped impedance low-pass filter was designed for IF output and isolation of RF and LO.

  • The mixer was simulated with Agilent ADS


Experimental results

Experimental results


Experimental results1

Experimental results


Experimental results2

Experimental results


Experimental results3

Experimental results


Conclusion

Conclusion

  • Experimental results validate the performances and the highly integration of the proposed

    mixer

  • This mixer will be a good choice for designing high performance microwave and millimeter wave integrated circuits


References

References


References1

References


References2

References


References3

References


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