Search for dissertations about: "Antenna array"
Showing result 1 - 5 of 150 swedish dissertations containing the words Antenna array.
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1. Investigating and Enhancing Performance of Multiple Antenna Systems in Compact MIMO/Diversity Terminals
Abstract : Today, owners of small communicating device are interested in transmitting or receiving various multimedia data. By increasing the number of antennas at the transmitter and/or the receiver side of the wireless link, the diversity/Multiple-Input Multiple-Output (MIMO) techniques can increase wireless channel capacity without the need for additional power or spectrum in rich scattering environments. READ MORE
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2. Sparse Array Synthesis of Complex Antenna Elements
Abstract : Arrays of antennas can significantly improve the performances and extend the capabilities of single-element antennas. However, antenna arrays are expensive solutions and therefore it is critical to keep the costs to a minimum. READ MORE
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3. Next Generation Wideband Antenna Arrays for Communications and Radio Astrophysics
Abstract : Wideband, wide-scan antenna arrays are a promising candidate for the future wireless networks and as well as an essential part of experimental radio astrophysics. Understanding the underline physics of the element performance in the array environment is paramount to develop and improve the performance of array systems. READ MORE
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4. Antenna array mapping for DOA estimation in radio signal reconnaissance
Abstract : To counter radio signal reconnaissance, an efficient way of covert communication is to use subsecond duration burst transmissions in the congested HF band. Against this background, the present thesis treats fast direction finding (DF) using antenna arrays with known response only in a few calibration directions. READ MORE
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5. On the analysis of soft surfaces, frequency selective surfaces and conformal antennas
Abstract : .... READ MORE