Articles with "circular antenna" as a keyword



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Optimum design of linear and circular antenna arrays using equilibrium optimization algorithm

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Published in 2021 at "International Journal of Microwave and Wireless Technologies"

DOI: 10.1017/s1759078720001774

Abstract: Abstract In this paper, equilibrium optimization algorithm (EOA), which is a novel optimization algorithm, is applied to synthesize symmetrical linear antenna array and non-uniform circular antenna array (CAA). The main purpose of antenna array synthesis… read more here.

Keywords: optimization; optimization algorithm; element; circular antenna ... See more keywords
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Calibration and Evaluation of a Circular Antenna Array for HF Radar Based on AIS Information

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Published in 2020 at "IEEE Geoscience and Remote Sensing Letters"

DOI: 10.1109/lgrs.2019.2938788

Abstract: High-frequency (HF) ground-wave radars employing compact antenna arrays are advantageous in practical applications because of their convenient deployment. However, the direction-of-arrival (DOA) estimation accuracy may significantly degrade in the presence of array errors for compact… read more here.

Keywords: calibration; array; method; antenna ... See more keywords
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Broadband Full-Duplex Monostatic Circular-Antenna Arrays: Circular Arrays Reaching Simultaneous Transmit and Receive Operation

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Published in 2018 at "IEEE Antennas and Propagation Magazine"

DOI: 10.1109/map.2018.2859164

Abstract: Broadband copolarized monostatic circular-antenna arrays based on mode orthogonality principles are presented for in-band full-duplex (FD) applications. The simultaneous excitation of circular phase modes in a circular array with four elements provides ideally infinite isolation.… read more here.

Keywords: array; monostatic circular; antenna arrays; circular antenna ... See more keywords
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Radiation Beam Pattern Synthesis of Concentric Circular Antenna Arrays Using Hybrid Approach Based on Cuckoo Search

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Published in 2018 at "IEEE Transactions on Antennas and Propagation"

DOI: 10.1109/tap.2018.2846771

Abstract: A novel hybrid approach to suppress the maximum sidelobe level (SLL) of large scale concentric circular antenna array (CCAA) is proposed. The approach includes an improved discrete cuckoo search algorithm (IDCSA) for thinning the CCAA… read more here.

Keywords: concentric circular; hybrid approach; circular antenna; cuckoo search ... See more keywords
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Target Location Using Dual-Beam Directional Modulated Circular Array

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Published in 2018 at "IEEE Transactions on Antennas and Propagation"

DOI: 10.1109/tap.2018.2869257

Abstract: A new concept directed toward the location of an object within a sector of space is introduced, by using a combination of the properties associated with directional modulation when implemented on a circular antenna array.… read more here.

Keywords: array; location; target location; circular antenna ... See more keywords
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A Coherent Multiple Beamforming Network for a Non-uniform Circular Antenna Array

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Published in 2019 at "Radioengineering"

DOI: 10.13164/re.2019.0074

Abstract: This work proposes and describes a modular and innovative beamforming network (BFN) to feed a nonequally spaced circular antenna array. The structure is based on a set of alternated power combiners and dividers that delivers… read more here.

Keywords: circular antenna; coherent; antenna array; network ... See more keywords
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SUBSTRATE INTEGRATED WAVEGUIDE CIRCULAR ANTENNA FOR TERAHERTZ APPLICATION

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Published in 2019 at "Progress In Electromagnetics Research C"

DOI: 10.2528/pierc19080607

Abstract: This paper presents a multi-band annular ring antenna that is obtained from a singlelayer probe-fed substrate integrated waveguide based on a graphene material, with three top plan slits. In order to create a multi-bands antenna,… read more here.

Keywords: waveguide circular; integrated waveguide; circular antenna; antenna ... See more keywords