Results 251 to 260 of about 10,662,693 (288)
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Low side-lobe level pattern synthesis of optical leaky-wave antennas
Optik, 2021Abstract It is well-known that the reduction of side lobes is important for decreasing interference with components in an optical system, as well as obtaining high information security and lowering power losses. This paper introduces a procedure, based on the simultaneous control of the phase and leakage constants, through which the side-lobe level ...
Reyhane Shaker +2 more
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A novel adaptive beamforming with reduced side lobe level using GSA
COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, 2018Purpose The purpose of this paper is to present and solve the problem of adaptive beamforming (ABF) for a uniform linear array (ULA) as an optimization problem. ABF mainly concerns with estimation of weights of antenna array so as to direct the major lobe in the direction of desired user and nulls in the direction of interfering signals with reduced ...
Abhinav Sharma, Sanjay Mathur
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Tilt angle and side‐lobe level control of microwave array antennas
Microwave and Optical Technology Letters, 2002AbstractThis article describes a new strategy for controlling the tilt angle and side‐lobe level of linear array antennas by using a genetic algorithm. A very simple fitness function for controlling the performance of the array was constructed and is suggested. Simulations show excellent results for directing the main lobe and side‐lobe levels.
Vilson Rodrigo Mognon +2 more
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Reconfigurable array antennas with side lobe level control by genetic modulation
IEEE Technology Students' Symposium, 2011In this paper the design problem of an equi-spaced linear array is considered with the constraint of reducing side lobe level which results in the leakage of the received signal energy. In order to achieve this, powerful tool based on the event of probability has to be chosen.
K R Subhashini +3 more
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Optimizing OAM Side-lobe Levels Using Sparse 2D Array
2019 Photonics & Electromagnetics Research Symposium - Fall (PIERS - Fall), 2019Electromagnetic orbital angular momentum (OAM) as the promise of enhancing spectral efficiency in informational transmission has attracted widespread attention in the fields of radio frequency and optical communications. Hitherto, two main methods have been put forward to generate beams carrying OAM in the field of communication at lower frequencies ...
Donghua Yang +5 more
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Yagi Antenna with Minimal Side-Lobe Levels for UHF
2022 57th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST), 2022Miroslav Bozhkov, Peter Petkov
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Point-to-Point Dielectric-Horn Integrated Resonator Antenna with Reduced Side-Lobe Level
2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, 2019A novel dielectric resonator antenna (DRA), working at 28 GHz with a peak gain of 12.4 dBi over a fractional bandwidth of 12.6%, is presented. The novel design achieves side-lobe levels below-10 dB for both the E and H-planes so to meet the requirements of the new generation 5G wireless communications systems.
E. Baldazzi +4 more
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Bidirectional periodic leaky-wave antenna on SIW with reduced side lobe level
2015 IEEE Applied Electromagnetics Conference (AEMC), 2015In this paper, a bidirectional periodic leaky-wave antenna (LWA) using substrate integrated waveguide (SIW) based power divider is presented at X-band. Later, by incorporating new kind of slot, side-lobe level (SLL) is improved by 1 dB. The gain is achieved by proposed antenna is 12.1 dBi within a suitable scanning range.
Anirban Sarkar, Animesh Biswas
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Side Lobe Level Suppression of THz Bowtie Antenna on Hemispherical Dielectric Lens
2019 8th Asia-Pacific Conference on Antennas and Propagation (APCAP), 2019Imaging quality depends on radiation performance of a transmitter and receiver, including beam width and side lobe levels. For imaging systems, side lobes of radiation sources should be minimum for optimum scanning and array configurations. A high sidelobe level can potentially disturb proper power detection in receivers affected by some radiation ...
Catur Apriono +2 more
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Design of low side-lobe level conformai antenna array by PSO-GA
2016 IEEE International Conference on Ubiquitous Wireless Broadband (ICUWB), 2016In this paper, the particle swarm optimization (PSO) method and genetic algorithm (GA) are combined and applied to optimize the antenna radiation pattern of conformal array. We improve the traditional PSO method by using inertia weight factor and prevent PSO method from getting stuck at a local optimum.
Xiao-meng Yu +5 more
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