first side-lobe level
Synthesis of a Linear Antenna Array for Maximum Side lobe Level Reduction
... reduce Side Lobe Level (SLL) of antenna arrays to save power and improve Quality of Service (QoS) by ensuring maximum radiation in desired direction, several methods are available in ...the ...
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SYNTHESIS OF NON UNIFORM LINEAR ARRAYS USING DOLPH – CHEBYSHEV POLYNOMIAL BY REDUCING SIDE LOBE LEVEL BASED ON MODULATING PARAMETER ARRAY FACTOR
... the first side lobe is reduced, null to null beam width is ...the first side lobe level and without disturbing the main beam ...
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Synthesis of Thinned Planar Concentric Circular Antenna Arrays --- a Differential Evolutionary Approach
... minimized side lobe level ...here. First set deals with thinned array design with the goal to achieve number of switched off elements equal to 220 or ...maintaining side lobe ...
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Linear Antenna Array Synthesis using a Hybrid Method of Moments and Genetic Algorithm to Reduce the Side Lobe Level
... In 1960s, John Holland was first introduced a simple example on the Genetic Algorithm which is a class of Evolutionary algorithms. This optimisation algorithm is more powerful for problems with more number of ...
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Constraint-Based Synthesis of Linear Antenna Array Using Modified Invasive Weed Optimization
... peak side lobe level (PSLL) and for achieving nulls in specified ...the first null beam width (FNBW) or the accurate null positioning as desired by the application at hand lending a high ...
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Proposing a new variable window for better side lobe reduction
... parameters first one is window span N and another changeable parameter is ...major lobe of window also increases with better side lobe reduction and vice ...better side lobe ...
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Modeling Beam forming in Circular Antenna Array with Directional Emitters
... ABSTRACT: The article discusses the functioning of the radio direction-finding and beamforming methods in the system of circular antenna arrays formed from the designed radiators, directional factor which is not equal to ...
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How Do Non Ideal UAV Antennas Affect Air to Ground Communications?
... to side-lobe gain ratio of in a sub- urban environment, the required radius of the exclusion zone is around 50km given ...the side-lobes of ...
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Design of a Linear Array of Half Wave Parallel Dipoles Using Particle Swarm Optimization
... algorithm. The cost function should be designed so that it can lead the search. One way of achieving this is to avoid cost functions where many states return the same value. In antenna array problems there are many ...
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Design and Realization of a Flat-Top Shaped-Beam Antenna Array
... Abstract—The design and realization of a ten-element shaped-beam antenna array are presented. A flat-top pattern in the main beam which allows a well-proportioned power distribution in desired zone is achieved by ...
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Window Function Analysis in OFDM System for PAPR Reduction
... main lobe and the peak level of the side lobes, which respectively determine the ability to resolve comparable strength signals and disparate strength ...low- level sinusoids in an otherwise ...
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Synthesis of Thinned Array with Side Lobe Levels Reduction Using Improved Binary Invasive Weed Optimization
... Abstract—As a very powerful optimization algorithm, invasive weed optimization has been widely applied to continuous optimization problems in electromagnetic (EM) field. However, the optimization of a thinned array can ...
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Optimal Synthesis of Thinned Arrays Using Biogeography Based Optimization
... Haupt [1] used GA in process of thinning a linear array of 200 elements, and resulting sidelobe levels were lower than −18 dB in all cases shown. Weile and Michielssen have employed a Pareto Genetic Algorithm (PGA) for ...
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Superdirective Beamforming with Interferences and Noise Suppression via Second-Order Cone Programming
... low side lobe level (SLL) and nulls are not only used to suppress interferences and noise, but also play an important part in overcoming the low array efficiency brought by superdirective ...
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Analysis and Design of Millimeter-Wave Circularly Polarized Substrate Integrated Travelling-Wave Antennas
... radio communications and radar modes has been presented in [14]. These integrated systems can be improved by optimizing the transmitting and receiving antennas. Since in these works, the two antennas are linearly ...
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Some Tasmanian harvestmen of the sub order Palpatores
... The femur is provided with a dorsal row of four small tubercles, a rounded multisetose lobe near the apex on the prolateral side, a large unisetose spine on the retrolateral side and a l[r] ...
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DESIGN AND IMPLEMENTATION OF FFT FILTER USING VHDL IP CORE BASED DESIGN
... Given the preponderance of FIR and FFT implementation, it is critical that the FPGA DSP architecture be designed to enable this implementation with highest performance and the least resources. At the 28-nm process node, ...
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Performance Improvement in Amplitude Synthesis of Unequally Spaced Array Using Least Mean Square Method
... reduce side lobe level considerably in large circular ...sidelobe level (SLL) equal to or below a fixed level and the percentage ofthinning is always kept equal to or above a fixed ...
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The 425 Terms You Ought to Know for the AP Exam.docx
... Temporal Lobe – at side of brain above ears involved in memory, perception, hearing Occipital Lobe – lower back part of brain involved with processing visual info vision Peripheral[r] ...
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Transverse subisthmic course of the innominate artery in an adult: detailed anatomy and additional variation
... left side of the trachea, coursed on that side of the trachea to reach the left thyroid lobe, turned in at a right angle to pass anterior to the trachea and immediately inferior and parallel to the ...
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