Mutual coupling reduction in microstrip array antenna by employing cut side patches and EBG structures
TLDR
In this article, a modified version of Minkowski fractal geometry is applied on the patch elements, and at the same time 1D electromagnetic bandgap (EBG) structures, composed of 4 EBG elements, are placed between the array elements in a very close distance.Abstract:
This paper presents the simultaneous application of Minkowski fractal geometry and EBG structures for mutual coupling reduction in microstrip array antennas for the first time. In this approach, a modified version of Minkowski fractal geometry is applied on the patch elements, and at the same time 1D electromagnetic bandgap (EBG) structures, composed of 4 EBG elements, are placed between the array elements in a very close distance. Unlike many other coupling reduction methods, which have at least one of the issues of gain reduction or complex fabrication, the proposed method does need any via or double-sided etching and slightly increases the gain of the antenna, while an excellent reduction level of 22.7 dB has been achieved. To verify the concept, 2 array antennas with the spacing of λ0 and λ0/3 were fabricated and tested, showing very good agreement between predicted and measured results.read more
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References
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Mutual Coupling Reduction in Patch Antenna Arrays Using a UC-EBG Superstrate
TL;DR: In this paper, a configuration of uniplanar compact electromagnetic band-gap (UC-EBG) structures is proposed to reduce mutual coupling between the radiating elements of an antenna array.
Journal ArticleDOI
Mutual Coupling Reduction Between Microstrip Patch Antennas Using Slotted-Complementary Split-Ring Resonators
TL;DR: In this paper, a novel structure based on complementary split-ring resonators (SRRs) is introduced to reduce the mutual coupling between two coplanar microstrip antennas that radiate in the same frequency band.
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Multiobjective Particle Swarm Optimization to Design a Time-Delay Equalizer Metasurface for an Electromagnetic Band-Gap Resonator Antenna
TL;DR: In this paper, an efficient particle swarm optimization (PSO) algorithm was developed to design a near-field time-delay equalizer metasurface (TDEM) for the purpose of improving directivity and radiation patterns of classical electromagnetic band-gap resonator antennas.
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Recent Advances in Fabrication Methods for Flexible Antennas in Wearable Devices: State of the Art
Bahare Mohamadzade,Raheel M. Hashmi,Roy B. V. B. Simorangkir,Reza Gharaei,Sabih ur Rehman,Qammer H. Abbasi +5 more
TL;DR: An operational perspective of recent advances fabrication methods for flexible antennas is presented, while analyzing the strengths and limitations of each in the microwave as well as millimeter-wave regions.
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Characteristics and Applications of a Novel Compact Spiral Electromagnetic Band-Gap (EBG) Structure
TL;DR: In this paper, a novel compact EBG structure in a spiral shape is presented and investigated, where the EBG cell introduces spiral structure to enlarge the capacitance between neighboring elements much, and get an extremely compact size.