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A small size circularly polarized (CP) patch antenna by the use of parasitic ellipse-shaped shorting strips is presented in this paper. These parasitic shorting strip elements which provide capacitive and inductive loading effects to the patch can reduce the size of antenna. The total area of reduction is more than 61% in comparison with the conventional half-wave patch antenna. The antenna works...
The microstrip antenna is widely used in our life now for its low profile, simple structure, low cost and omnidirectional radiation patterns. But the drawbacks of this kind antenna also sometimes confine their applications, especially the narrow bandwidth. In this paper, a microstrip antenna with the defected ground structure (DGS) is proposed. The bandwidth of an original antenna without DGS is significantly...
In this article, a novel compact microstrip-fed slot antenna with dual band-notched characteristic is proposed. The proposed antenna consists of a circular patch and a multiple ground plane. By inserting two U-shaped slots to the circular patch and adjusting the dimensions of the slots, the antenna can reach a frequency band-width from 2.9 to 15.6 GHz for voltage standing wave ratio (VSWR) <; 2...
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