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A novel frequency scanning monopulse microstrip antenna array is proposed in this paper. The array has the frequency scanning performance in one dimension and has the monopulse performance in another dimension. The miniaturized slow-wave structure has been used to achieve the compact structure. Compared with the conventional slow-wave structure, this miniaturized slow-wave structure reduces its height...
A millimeter wave cylindrical conformal array with conical beam is presented in this paper. The array consists of eight microstrip leaky wave antenna (MLWA) elements. The gain ripple with the number of elements is investigated. Based on the analysis results, the least number of elements can be chosen for a given ripple in gain pattern. The performances of the array were analyzed by full-wave commercial...
A novel structure to reduce the mutual coupling between two conformal microstrip patch antennas has been proposed in this paper. In this structure, a parasitic tape is added on each microstrip patch element. With this parasitic structure, a 19.8 dB mutual coupling reduction between two conformal mierostrip patch antennas was obtained, while the antenna radiation patterns in both E-plane and H-plane...
A novel circular polarized patch antenna with modified T-probe fed structure is proposed. By replacing the bent part of a T-probe with a printed strip on the substrate and by placing a radiating patch beneath the substrate, the proposed antenna can be more easily fabricated by using the printed technology. The simulation and experimental results show that the modified T-shaped probe single-fed CP...
In this paper, the reduction of mutual coupling between two microstrip patch antennas is presented by implementing a novel parasitic structure. The measured results show that a 21 dB mutual coupling reduction was obtained in the bandwidth of 2.2% without affecting the radiation patterns obviously. This structure can be easily integrated into an adaptive antenna array to improve the null depth, or...
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