reduction of the in-band rcs of microstrip patch antenna by using offset feeding technique
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ID: 180546
2014
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Abstract
This paper presents a method for implementing a low in-band scattering design for microstrip patch antennas based on the analysis of structural mode scattering and radiation characteristics. The antenna structure is first designed to have the lowest structural mode scattering in a desired frequency band. The operating frequency band of the antenna is then changed to coincide with that of the lowest structural mode scattering by adjusting the feed position on the antenna (offset feeding) to achieve an antenna with low in-band radar cross section (RCS). In order to reduce the level of cross polarization of the antenna caused by offset feeding, symmetry feeding structures for both single patch antennas and two-patch arrays are proposed. Examples that show the efficiency of the method are given, and the results illustrate that the in-band RCS of the proposed antennas can be reduced by as much as 17 dBsm for plane waves impinging from the normal direction compared to patch antennas fed by conventional methods.
| Reference Key |
xu2014internationalreduction
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|---|---|
| Authors | ;Weiwei Xu;Junhong Wang;Meie Chen;Zhan Zhang;Zheng Li |
| Journal | american journal of physiology endocrinology and metabolism |
| Year | 2014 |
| DOI |
10.1155/2014/383716
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