International Journal of Terahertz Science and Technology
  TST >> Vol.7, No.3, September 2014: PP. 145-149
 

Analysis and design of a quasi-optical monopulse antenna at sub-millimeter wavelengths

Long Zhang *, Wenbin Dou
State Key Laboratory of Millimeter Waves, Southeast University, Nanjing, China, 210096,
* Email: zhanglong0206@gmail.com

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Abstract: A quasi-optical (QO) monopulse antenna operating at sub-millimeter wavelengths is described in this paper. The Finite Difference Time Domain (FDTD) method is adopted for investigating the radiation performance of sum-difference patterns. For suppressing the sidelobe levels of sum radiation patterns, a hyperbolic-plano dielectric lens with cutting segments is introduced. The simulated results show good monopulse performance with the sidelobe levels below -10.0 dB, the maximum null-depth approximately -30.0 dB, and the amplitude unbalance below 1.25 dB.

Keywords: Quasi-optical (QO), Monopulse antenna, Sub-millimetre wavelengths.

Received: 2014-5-31

Published: 2014-9-30

Acknowledgments: This work is supported by the National Natural Science Foundation of China under grant 61171025.

Cite this article:
Long Zhang, Wenbin Dou. Analysis and design of a quasi-optical monopulse antenna at sub-millimeter wavelengths[J]. International Journal of Terahertz Science and Technology, 2014, Vol.7, No.3: 145-149.  DOI:10.11906/TST.145-149.2014.09.12

URL: http://www.tstnetwork.org/10.11906/TST.145-149.2014.09.12

 
 
 

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