Novel Compact Mushroom-Type EBG Structure for Electromagnetic Coupling Reduction of Microstrip Antenna array

Frequenz ◽  
2015 ◽  
Vol 69 (3-4) ◽  
Author(s):  
Lizhong Hu ◽  
Guangming Wang ◽  
Jiangang Liang ◽  
Chenxin Zhang
Keyword(s):  
Antenna Arrays ◽  
Microstrip Antenna ◽  
Mutual Coupling ◽  
Electromagnetic Coupling ◽  
Microstrip Antennas ◽  
Far Field ◽  
Electromagnetic Bandgap ◽  
Multiple Input ◽  
Microstrip Antenna Array ◽  
Field Radiation

AbstractA novel compact electromagnetic bandgap (EBG) structure consisting of two turns complementary spiral resonator (CSR) and conventional mushroom EBG (CM-EBG) structure is introduced to suppress the mutual coupling in antenna arrays for multiple-input and multiple-output (MIMO) applications. Eigenmode calculation is used to investigate the proposed CSR-loaded mushroom-type EBG (MT-EBG), which proved to exhibit bandgap property and a miniaturization of 48.9% is realized compared with the CM-EBG. By inserting the proposed EBG structure between two E-plane coupled microstrip antennas, a mutual coupling reduction of 8.13 dB has been achieved numerically and experimentally. Moreover, the EBG-loaded antenna has better far-field radiation patterns compared with the reference antenna. Thus, this novel EBG structure with advantages of compactness and high decoupling efficiency opens an avenue to new types of antennas with super performances.

Electromagnetic Coupling Reduction in Microstrip Antenna Arrays Using Single-Negative Electric Waveguided Metamaterials

2014 ◽  
Vol 596 ◽  
pp. 816-821
Author(s):  
Li Zhong Hu ◽  
Guang Ming Wang ◽  
Guo Cheng Wu
Keyword(s):  
Antenna Arrays ◽  
Microstrip Antenna ◽  
Mutual Coupling ◽  
Ring Resonator ◽  
Electromagnetic Coupling ◽  
Electric Resonance ◽  
Operating Wavelength ◽  
Novel Structure ◽  
Single Ring ◽  
Field Radiation

A single-negative electric waveguided metamaterial (WG-MTM) is proposed using folded complementary split single ring resonator (FCSSRR) to reduce mutual coupling in antenna arrays for MIMO applications. The WG-MTM is investigated numerically, which proved to exhibit electric resonance and band-gap property. Two antenna arrays have been designed, fabricated and measured. By inserting the electric negative metamaterial, a mutual coupling reduction of 9.2dB has been achieved with an edge-to-edge distance less than 0.17 (where is the operating wavelength). Moreover, the metamaterial loaded antenna has better far-field radiation patterns compared with the reference antenna. Thus, this novel structure not only has good coupling reduction ability, but also can optimize the performances of the antennas.

scholarly journals A Compact Low-Permittivity Dual-Layer EBG Structure for Mutual Coupling Reduction

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
A. Azarbar ◽  
J. Ghalibafan
Keyword(s):  
Microstrip Antenna ◽  
Mutual Coupling ◽  
Single Layer ◽  
Electromagnetic Bandgap ◽  
Drastic Reduction ◽  
Unit Cell Size ◽  
Microstrip Antenna Array ◽  
Specific Frequency ◽  
Low Permittivity ◽  
Mutual Coupling Reduction

Electromagnetic bandgap (EBG) structures can help in the reduction of mutual coupling by their capabilities of suppressing surface wave's propagation in a specific frequency range. In this work, a dual-layer EBG structure, which had a lower resonant frequency than the single-layer one, is proposed in order to reduce the mutual coupling between -plane coupled microstrip antenna array. As this EBG structure significantly made the series capacitance between neighbor cells larger, a drastic reduction of the unit cell size was achieved. The simulated and experimental results show that the proposed structure has a significant 19 dB mutual coupling reduction.

Eight Element Antenna Array With Reduced Back Lobe Radiation

2020 ◽  
Vol 5 (2) ◽  
pp. 78-89
Author(s):  
Prahlada Rao ◽  
VANI R M ◽  
P V Hunagund
Keyword(s):  
Dielectric Constant ◽  
Resonant Frequency ◽  
Antenna Array ◽  
Antenna Arrays ◽  
Microstrip Antenna ◽  
Mutual Coupling ◽  
Dielectric Substrate ◽  
Good Reduction ◽  
Radiation Properties ◽  
Microstrip Antenna Array

The paper presents the improvement in the performance of eight element microstrip antenna array. The overall bandwidth of the proposed microstrip antenna array is equal to 85.74 % as compared to 4.98 % of the conventional antenna array. The proposed microstrip antenna array is producing good reduction in mutual coupling values at the resonant frequency of 5.53 GHz. Moreover, the radiation properties of conventional antenna array are improved with good reduction in power radiated in the undesired direction. The proposed microstrip antenna array is producing a healthy size reduction of 47.19 %. FR-4 glass epoxy substrate is used as dielectric substrate which has a dielectric constant of 4.2 and loss tangent of 0.0245. The microstrip antenna arrays are designed using Mentor Graphics IE3D software.

scholarly journals Compact Design of Annular-Microstrip-Fed mmW Antenna Arrays

Sensors ◽  
2021 ◽  
Vol 21 (11) ◽  
pp. 3695
Author(s):  
Shu-Dong Lin ◽  
Shi Pu ◽  
Chen Wang ◽  
Hai-Yang Ren
Keyword(s):  
Antenna Arrays ◽  
Microstrip Antenna ◽  
Radiation Characteristic ◽  
60 Ghz ◽  
Outer Contour ◽  
Linear Arrays ◽  
Directional Radiation ◽  
Microstrip Antenna Array ◽  
Compact Design ◽  
Compact Array

In this paper, a series of four novel microstrip antenna array designs based on different annular-microstrip feeding lines at 60-GHz millimeter wave (mmW) band are proposed, aiming at the potential usage of the mmW coverage antenna with multi-directional property. As the feeding network, the annular contour microstrip lines are employed to connect the patch units so as to form a more compact array. Our first design is to use an outer contour annular microstrip line to connect four-direction linear arrays composed of 1 × 3 rectangular patches, thus the gain of 8.4 dBi and bandwidth of over 300 MHz are obtained. Our second design is to apply the two-direction pitchfork-shaped array each made up of two same linear arrays as the above, therefore the gain of 9.65 dBi and bandwidth of around 250 MHz are achieved. Our third design is to employ dual (inner and outer contour) annular-microstrip feeding lines to interconnect the above four-direction linear arrays, while our fourth design is to bring bridged annular-microstrip feeding lines, both of which can realize the goal of multi-directional radiation characteristic and higher gain of over 10 dBi.

scholarly journals NOVEL WEARABLE EAGLE SHAPE MICROSTRIP ANTENNA ARRAY WITH MUTUAL COUPLING REDUCTION

2015 ◽  
Vol 62 ◽  
pp. 87-103 ◽  
Author(s):  
Mohamed Ismail Ahmed ◽  
Esmat Abdel-Fattah Abdallah ◽  
Hadia M. El-Hennawy
Keyword(s):  
Antenna Array ◽  
Microstrip Antenna ◽  
Mutual Coupling ◽  
Microstrip Antenna Array ◽  
Mutual Coupling Reduction
Sign in / Sign up

Export Citation Format

Share Document