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A Gunn-Diode Active Leaky-Wave Frequency Scanning Antenna

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Abstract

A frequency tunable active leaky-wave scanning antenna using Gunn-diode voltage control oscillator (VCO) as source is developed. The frequency tuning controlled by changing either the varactor diode dc bias or the Gunn diode dc bias is demonstrated. The measured scanning angle of active antenna is close to 15 degree as the Gunn VCO frequency tuned from 12.58GHz to 12.98GHz. To excite the first higher order mode of the microstrip leaky-wave antenna is fed asymmetrically. The dominant mode excitation has been successfully suppressed by adding a sequence of covered wire in the middle line of the microstrip leaky wave antenna. This is a prototype of frequency scanning antenna using two terminal device, which can be easily scaled up to millimeter wave frequency region.

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Authors and Affiliations

  1. Institute of Electronic Engineering, National Chiao Tung University, Hsinchu, Taiwan, Republic of China

    Shing Horng Lee & Chien Ping Lee

  2. Institute of Communication Engineering, National Chiao Tung University, Hsinchu, Taiwan, Republic of China

    Christina F. Jou & Cheng Chi Hu

  3. Technology & Commerce Luchu, Kaohsiung, Taiwan, Republic of China

    Jin Jei Wu

Authors
  1. Shing Horng Lee
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  2. Christina F. Jou
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  3. Chien Ping Lee
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  4. Cheng Chi Hu
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  5. Jin Jei Wu
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Lee, S.H., Jou, C.F., Lee, C.P. et al. A Gunn-Diode Active Leaky-Wave Frequency Scanning Antenna. International Journal of Infrared and Millimeter Waves 19, 149–163 (1998). https://doi.org/10.1023/A:1022631032345

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  • DOI: https://doi.org/10.1023/A:1022631032345

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