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V-shaped air slits inscribed in a metallic thin film is used to achieve cross-polarized anomalous refraction with high efficiency. The experimental refraction angles are in excellent agreements with theoretical values.
A novel 1 × 4 planar UWB antenna array is proposed. The utilized single element is a compact planar circular slot micro-strip antenna. The feeding network is 1 to 4 Wilkinson power divider. The bandwidth of the antenna array is from 3.1GHz to 12.4GHz and the radiation pattern is bidirectional.
A dual-band micro-Strip antenna array is proposed. The utilized single element is a compact planar circular slot micro-strip antenna. Feeding network is a power divider with 8 branches. The frequency band is 5.5GHz to 6.9GHz and 10.3GHz to 10.6GHz. Experiment shows the antenna possesses well dual-band performance and higher gain.
In order to accelerate the convergence of the microphone array speech enhancement system based on generalized sidelobe canceller (GSC), the input signals of the adaptive module are decomposed into their subbands by filter bank to perform the multichannel adaptive filter (MCAF) in each subband. The columns of the blocking matrix are derived from a prototype vector by cosine modulation, and these columns...
A novel, ultra-wideband antenna element has been developed for broadband antenna array applications. It has novel asymmetric tapered slot structure and is fed by microstrip line. The antenna element can operate over an ultra-wideband from 1.5 GHz-9.5 GHz. A broadband antenna array composed by the novel antenna elements is also proposed. The asymmetric tapered slot antenna and its mirror image are...
In this paper the theory and experiment have demonstrated a good performance of this new antenna array. The operating bandwidth of this antenna array is from 3.1 GHz to 12.4 GHz, which covers all the frequency range of UWB, and the radiation pattern is bidirectional.
We have developed a 1 times 4 wideband array structure for multiple wireless applications. The utilized single element is a wide-slot antenna and has demonstrated ultra-wideband operation characteristics. The proposed antenna system associated with feeding network and antenna elements can be integrated in a single substrate. Consequently, such a design is with low fabrication and assembly cost and...
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