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A microstrip patch antenna array with low-side lobe level, high gain and broadband is presented in this paper. A microstrip patch with one parasitical patch is proposed as a radiation element, and the antenna array is composed of 8×8 radiation elements. Then Chebyshev current distribution is used to design the feeding network on H-plane. The simulated results by CST Microwave Studio software indicate...
This paper presented a practical electromagnetic absorber design with periodic cells based on the well-known Salisbury screens. The unit cell has a size of 20cm × 20cm (7λ at the resonance frequency, 11 GHz) and a thickness of 20μm conductive ink. The return loss at the resonance frequency is up to 34 dB, which has a 3.5 GHz in bandwidth at the threshold of 10 dB. The frequency bandwidth is achieved...
This paper presents the actual production procedure of an electromagnetic absorber by using the well-known Salisbury screens, which are distributed periodically to overcome the bonding difficulty between the upper and lower layers of the absorbing materials. In particular, the unit cell of the Salisbury screen is square with a 15 cm in side-length (5λ at the resonance frequency, 10 GHz) and 30 µm...
In this paper, a utility-based fuzzy wavelength assignment with fiber delay line (UFWA) is proposed to achieve both high wavelength utilization and low traffic delay in optical burst switching (OBS) networks. It contains a suitable wavelength concentrator (SWC) to filter more adequate wavelengths with higher unities, several fuzzy wavelength evaluators (FWE) to calculate the adequate degrees of the...
In data grids, replication is a critical technology aiming at lowering the access delay as well as saving network bandwidth by duplicating original data in a distributed manner. For data-intensive applications with read/write files, replica consistency is an important issue. In this paper, we propose a novel replica consistency decision model with high adaptability and flexibility using the naive...
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