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| Reducing the RCS of Microstrip Patch Antenna by Cutting Slots on the Groundplane |
| Zhang Ming-xu; Gong Shu-xi; Liu Ying |
| National Laboratory of Antennas and Microwave Technology, Xidian University, Xi’an 710071, China |
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Abstract The radiation and impedance characteristic of microstrip antenna may be influenced by cutting slots on the groundplane with applications to widening the frequency band. The Method of Moment(MoM)which is used to solve the scattering of microstrip patch antenna is presented. The effect of cutting groundplane slots on the RCS is analyzed and a scheme of cutting slots is put forward combining shorted-posts load. The results indicate that the RCS is reduced a lot during a very wide frequency band, while antenna’ radiation performance remains. The conclusion is useful for the antenna radar cross section reduction.
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Received: 10 July 2006
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2008, Vol. 30 
