RCS REDUCTION USINGARRAYS OF PATCHES | ||
| The International Conference on Electrical Engineering | ||
| Article 123, Volume 7, 7th International Conference on Electrical Engineering ICEENG 2010, May 2010, Pages 1-17 PDF (365.19 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/iceeng.2010.33466 | ||
| Authors | ||
| W. M. Mahfouz1; A. M. Ghuniem2 | ||
| 1Egyptian Armed Forces. | ||
| 2Suez Canal University. | ||
| Abstract | ||
| Abstract: The radar echo characteristics of inanimate objects are given by the radar cross section (RCS) of the object. The RCS is proportional to the ratio of the scattered power density at the receiver to the incident power density at the target. Echo reduction and its effects are often the important concern of modern radar designers. There are different types employed to reduce the RCS, Shaping, radar absorbing material (RAM), passive cancellation, active cancellation, and plasma field[1]. Cancellation methods require loading the object with discrete antenna like elements (slots, dipoles or patches) whose impedance must be chosen so as to cancel the returns from other parts of the body. In this paper a cancellation technique is used to reduce RCS of a metallic object by using array of microstrip patches designed at required frequency and distributed on the surface of plate with different structures. The best structure of array of patches, which gives minimum RCS independent of the polarization, is selected. The effects of height of substrate, dielectric constant of substrate, the spaces between patches, and structure size on RCS reduction are discussed. Computer simulations with ZELAND package and measurements were performed to confirm the obtained results. | ||
| Keywords | ||
| Radar and microwave | ||
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