Novel Pattern-Diversity-Based Decoupling Method and Its Application to Multielement MIMO Antenna

Ding, Chao Feng; Zhang, Xiu Yin; Xue, Cheng-Dai; Sim, Chow‐Yen‐Desmond

doi:10.1109/tap.2018.2851380

Cited by 97 publications

(55 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Various types of the decoupling network approaches to increment the decoupling between the array antennas have been presented and explained in the literature such as diamond-shaped patterned ground resonator (DSPGR)plane decoupling network [56], dummy load-based decoupling approaches [57], coupled resonator decoupling network (CRDN) [58], and multi-element pattern diversity based decoupling network [59]. Table I depicts a comparison of the characteristics of MIMO antennas using decoupling networks.…”

Section: A Decoupling Network Approachmentioning

confidence: 99%

See 1 more Smart Citation

A Comprehensive Survey on “Various Decoupling Mechanisms With Focus on Metamaterial and Metasurface Principles Applicable to SAR and MIMO Antenna Systems”

et al. 2020

View full text Add to dashboard Cite

Nowadays synthetic aperture radar (SAR) and multiple-input-multiple-output (MIMO) antenna systems with the capability to radiate waves in more than one pattern and polarization are playing a key role in modern telecommunication and radar systems. This is possible with the use of antenna arrays as they offer advantages of high gain and beamforming capability, which can be utilized for controlling radiation pattern for electromagnetic (EM) interference immunity in wireless systems. However, with the growing demand for compact array antennas, the physical footprint of the arrays needs to be smaller and the consequent of this is severe degradation in the performance of the array resulting from strong mutual-coupling and crosstalk effects between adjacent radiating elements. This review presents a detailed systematic and theoretical study of various mutual-coupling suppression (decoupling) techniques with a strong focus on metamaterial (MTM) and metasurface (MTS) approaches. While the performance of systems employing antenna arrays can be enhanced by calibrating out the interferences digitally, however it is more efficient to apply decoupling techniques at the antenna itself. Previously various simple and cost-effective approaches have been demonstrated to effectively suppress unwanted mutual-coupling in arrays. Such techniques include the use of defected ground structure (DGS), parasitic or slot element, dielectric resonator antenna (DRA), complementary splitring resonators (CSRR), decoupling networks, P.I.N or varactor diodes, electromagnetic bandgap (EBG) structures, etc. In this review, it is shown that the mutual-coupling reduction methods inspired by MTM and MTS concepts can provide a higher level of isolation between neighbouring radiating elements using easily realizable and cost-effective decoupling configurations that have negligible consequence on the array's characteristics such as bandwidth, gain and radiation efficiency, and physical footprint. INDEX TERMS Decoupling methods, metamaterial (MTM), metasurface (MTS), multiple-input-multiple-output (MIMO), synthetic aperture radar (SAR), isolation enhancement, array antennas.

show abstract

Section: A Decoupling Network Approachmentioning

confidence: 99%

“…Table I depicts a comparison of the characteristics of MIMO antennas using decoupling networks. In [59], the highest efficiency and the lowest mutual coupling of -32 dB are achieved utilizing the most straightforward configuration of dummy loads. The dual-band operations are exhibited in [58].…”

Section: A Decoupling Network Approachmentioning

confidence: 99%

A Comprehensive Survey on “Various Decoupling Mechanisms With Focus on Metamaterial and Metasurface Principles Applicable to SAR and MIMO Antenna Systems”

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Substituting (12)∼(16) and (10) into (17) and comparing with (18), it is apparent that by terminating the dummy elements by load, the original admittances of the radiating antennas are modified. Since the analytical solution of y AH is not explicit, it is suggested that optimization on the high band dummy elements and all the loads should be conducted.…”

Section: Design Theory and Proceduresmentioning

confidence: 99%

Decoupling of Two Strongly Coupled Dual-Band Antennas With Reactively Loaded Dummy Element Array

et al. 2019

View full text Add to dashboard Cite

An efficient antenna mutual coupling reduction (decoupling) technique using reactively loaded dummy element array for two dual-band closely coupled MIMO antennas is proposed in this paper. This dummy element array comprises three dummy elements, including one low-frequency dummy element and two symmetrically placed high-frequency dummy elements. A pair of dual-band antennas working at 2.45 GHz (low band) and 5.8 GHz (high band) simultaneously is used to demonstrate the effectiveness of the proposed method and to illustrate the decoupling design process. The dual-band antennas with and without the designed dummy element array are both fabricated and measured. Measurement results show good impedance matching for both antenna ports at both operating bandwidths. More importantly, the isolations have been improved from 9 dB at low band and 7.7 dB at high band to more than 20 dB at low band and more than 25 dB at high band, respectively. The envelop correlation coefficient (ECC) as one key figure of merits for MIMO antennas is also improved significantly. The proposed method can find plenty of applications in dual-band wireless systems where multiple antennas are installed. INDEX TERMS Envelope correlation coefficient (ECC), isolation, multiple-input-multiple-output (MIMO), mutual coupling reduction, parasitic decoupling technique.

show abstract

“…In [20], a self-curing decoupling technique, only requiring the addition of a capacitive load on the antenna elements, was proposed to reduce the mutual coupling between two inverted-F antennas. In [21], a novel pattern-diversitybased method was successfully used to decouple different types of monopole antennas. In [22], high-order modes of a ground plane were studied and used to decouple two inverted-F antennas.…”

Section: Introductionmentioning

confidence: 99%

Weak-Field-Based Self-Decoupling Patch Antennas

Lin

Chen

et al. 2020

IEEE Trans. Antennas Propagat.

120

View full text Add to dashboard Cite

In this paper, a new self-decoupling method, namely weak-field-based decoupling technique, is proposed and validated based on inset-fed patch antenna arrays. The self-decoupling effect is realized by taking advantage of the inherent weak-field area created by the feeding structure and proposed inset-fed patch. By strategically arranging the array element in the weak-field area of the adjacent antenna element, the coupling strength between adjacent elements can be controlled under a very low level without the need of any additional decoupling circuitry or structures. A two-element patch antenna array was first developed and analyzed, achieving a peak isolation level of 61 dB. Afterwards, a fourelement linear patch antenna array was designed, fabricated and measured to further validate the proposed technique. With the distinct advantages of simple structure and effective isolation enhancement, the proposed self-decoupling method is very promising for MIMO applications.

show abstract

Novel Pattern-Diversity-Based Decoupling Method and Its Application to Multielement MIMO Antenna

Cited by 97 publications

References 30 publications

A Comprehensive Survey on “Various Decoupling Mechanisms With Focus on Metamaterial and Metasurface Principles Applicable to SAR and MIMO Antenna Systems”

A Comprehensive Survey on “Various Decoupling Mechanisms With Focus on Metamaterial and Metasurface Principles Applicable to SAR and MIMO Antenna Systems”

Decoupling of Two Strongly Coupled Dual-Band Antennas With Reactively Loaded Dummy Element Array

Weak-Field-Based Self-Decoupling Patch Antennas

Contact Info

Product

Resources

About