Volume 39 Issue 5
Sep.  2019
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ZHANG Lifang, WANG Hongjian, LIU Yang. Design and Analysis of a Wide Band Leaky Wave Antenna Based on Fractal[J]. Chinese Journal of Space Science, 2019, 39(5): 677-683. doi: 10.11728/cjss2019.05.677
Citation: ZHANG Lifang, WANG Hongjian, LIU Yang. Design and Analysis of a Wide Band Leaky Wave Antenna Based on Fractal[J]. Chinese Journal of Space Science, 2019, 39(5): 677-683. doi: 10.11728/cjss2019.05.677

Design and Analysis of a Wide Band Leaky Wave Antenna Based on Fractal

doi: 10.11728/cjss2019.05.677 cstr: 32142.14.cjss2019.05.677
  • Received Date: 2018-11-26
  • Rev Recd Date: 2019-03-28
  • Publish Date: 2019-09-15
  • A planar wide band Leaky Wave Antenna (LWA) is proposed in this paper. The antenna is composed of two substrate integrated waveguide horns, the paraboloid structure and a microstrip patch array with 30×10 units. In order to obtain wide bandwidth and high gain, a Minkowski quasi-fractal is properly designed in each unit cell of the patch array. A comparison between two different designs of conventional patch and fractal patch has been done.The simulated results indicate that the LWA with fractal patches has the impedance characteristics with a frequency bandwidth of 18~22GHz for input return loss more than 10dB and a max gain of 17dB at 20GHz. The measured results show that the return loss of 18~22GHz is greater than 10dB and the peak gain at 20GHz is 14dB. The antenna has the advantages of small size, easy integration, high gain, wide band and beam scanning. It can be widely used in data transmission antenna of satellite.

     

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