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Synthesis of Optimal Sum and Difference Patterns from Time Modulated Hexagonal Planar Arrays

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Abstract

An efficient array synthesis technique is developed for the design of optimal monopulse antennas in time modulated planar arrays with triangular lattices and hexagonal boundaries. Major emphasis is laid on the realization of low sidelobe array patterns from uniform amplitude excitations, and the inherent sideband radiations in time modulated arrays are suppressed to a sufficient low level. The synthesis technique implements the differential evolution strategy (DES) as the optimization tool, and a fast computation method based on 2D Fast Fourier Transform (FFT) is employed to speed up the optimization. Numerical results show that with the aid of the time modulation technique, the sum, difference, and double-difference patterns are obtainable from an array with fixed uniform amplitude excitations, thus demonstrating the effectiveness and validity of the proposed technique.

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Authors and Affiliations

  1. Department of Microwave Engineering, School of Electronic Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu, 610054, China

    Yikai Chen, Shiwen Yang & Zaiping Nie

Authors
  1. Yikai Chen
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  2. Shiwen Yang
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  3. Zaiping Nie
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Corresponding author

Correspondence to Shiwen Yang.

Additional information

Supported in part by the Natural Science Foundation of China under Grant No. 60571023, the New Century Excellent Talent Program in China (Grant No. NCET-06-0809), and in part by the 111 project of China (Grant No. B07046).

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Chen, Y., Yang, S. & Nie, Z. Synthesis of Optimal Sum and Difference Patterns from Time Modulated Hexagonal Planar Arrays. Int J Infrared Milli Waves 29, 933–945 (2008). https://doi.org/10.1007/s10762-008-9395-0

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  • DOI: https://doi.org/10.1007/s10762-008-9395-0

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