Suppression of Cross-Band Scattering in Multiband Antenna Arrays

Sun, Hai-Han; Ding, Can; Zhu, He; Jones, Bevan; Guo, Y. Jay

doi:10.1109/tap.2019.2891707

Cited by 132 publications

(67 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the LB and UB antennas in [10] are singlepolarized antennas and the array layout cannot be implemented into dual-polarized antenna arrays. Similarly, four HB antenna elements achieve shared-aperture working property with one LB antenna in [17]. However, the bandwidth of the LB antenna is very limited due to the radiation patches of the LB dipole are fragmented to reduce the mutual coupling with the HB antennas.…”

Section: Comparison With Other Dual-band Antennasmentioning

confidence: 99%

“…Therefore, the embedded layout is hard to be applied in this work since the higher band antenna array is a planar antenna array and the frequency ratio between two bands is 5. To achieve dual-band planar antenna array configuration, multiband antenna element [16] and fragmenting dipole element [17] are proposed in the literature. However, the multiband antenna element could not maintain stable radiation patterns in higher frequency bands (i.e.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Integration of 5G Rectangular MIMO Antenna Array and GSM Antenna for Dual-Band Base Station Applications

2020

View full text Add to dashboard Cite

In this paper, a dual-band dual-polarized antenna array is presented for 5G base station application. The developed antenna array consists of a 4 × 4 planar MIMO array operating at 3.3-5.0 GHz band (upper band UB) and a single antenna element working at 0.69-0.96 GHz band (lower band LB). The dual-band operation is based on our previously proposed antenna topology. The novelty of this paper is that the UB antenna array is a large-scale rectangular lattice array with 16 antenna elements for practical MIMO applications. Meanwhile, both the cross-band and in-band mutual coupling among the LB and UB antennas are furtherly suppressed by employing three decoupling techniques including rectangular ring resonator, ferrite chock ring, and novel baffle structure. With these decoupling technologies, the UB antenna array and the LB antenna are successfully integrated within a compact volume of 0.93λ L × 0.93λ L × 0.17λ L (λ L is the wavelength at 0.82 GHz). Experimental results show that the proposed dual-band antenna array offers high cross-band port isolation (>30 dB). Stable radiation patterns are also achieved for both the LB and UB antennas with averaged gain of 8.6 dBi and 7.3 dBi, respectively. The radiation efficiency is higher than 90% across the entire operation bands. It is the first time to realize a large scale sub-6 GHz MIMO antenna array shared-aperture working with a GSM band antenna element in a such compact volume. INDEX TERMS Dual-band antenna, base station antenna, compact size antenna.

show abstract

Section: Comparison With Other Dual-band Antennasmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Integration of 5G Rectangular MIMO Antenna Array and GSM Antenna for Dual-Band Base Station Applications

2020

View full text Add to dashboard Cite

show abstract

“…Array aperture miniaturization refers to miniaturizing the total occupied area of an antenna array by reducing or reusing the aperture. Some typical methods in this regard include nested antenna scheme, 5 current choke, 6 and frequency selective surface (FSS) 7 . Last, radiator miniaturization refers to reducing the radiator size of an antenna element.…”

Section: Introductionmentioning

confidence: 99%

Miniaturization of dual‐polarized crossed dipole antenna using dielectric loading

Chu

2021

Int J RF Microw Comput Aided Eng

View full text Add to dashboard Cite

In this article, dielectric loading is introduced as a method for miniaturizing dual‐polarized crossed dipole antenna. Specifically, the size, thickness, and relative permittivity of dielectric slab are considered as three critical parameters for antenna miniaturization. It is found that the three parameters have different loading effects on a crossed dipole, due to distinct modal current and field distributions. Furthermore, an antenna configuration loaded by 3‐layer dielectric slabs is proposed. Utilizing the slow‐wave property of dielectric loading, two miniaturized crossed dipole antennas with size of 40 mm × 40 mm (0.29 λ0 × 0.29 λ0) are devised, exhibiting an at least 21% size reduction over the previous dual‐linearly‐polarized crossed dipole antennas. Simulated and measured results demonstrate that the proposed antennas have wide bandwidth (1.71‐2.69 GHz), desirable impedance matching (VSWR <1.5), stable radiation pattern, and low gain loss.

show abstract

“…In [24], the presented filtering antenna element can improve the port isolation due to its high out-of-band radiation rejection characteristic, in which the radiation of the high band (HB) subarray is suppressed in the low band (LB) and vice versa. Choke radiators are also used to suppress the mutual coupling between low band and high band base station antennas [25]. While in [26], frequency selective surface (FSS) are used to solve the coupling issue whose scenario is similar to that in [25].…”

Section: Introductionmentioning

confidence: 99%

“…Choke radiators are also used to suppress the mutual coupling between low band and high band base station antennas [25]. While in [26], frequency selective surface (FSS) are used to solve the coupling issue whose scenario is similar to that in [25].…”

Section: Introductionmentioning

confidence: 99%

Isolation Improvement of Two Tightly Coupled Antennas Operating in Adjacent Frequency Bands Using Filtering Structures

Guo

Liu

Zhao

et al. 2020

IEEE Open J. Antennas Propag.

View full text Add to dashboard Cite

In this paper, a mutual coupling reduction technique using filtering structures between two antennas resonating in adjacent frequency bands is proposed. Two patch antennas resonating at low band (4.8-5.0 GHz, part of 5G Band N79) and high band (5.15-5.35 GHz, part of IEEE 802.11 ax 5 GHz Band), which are close to each other in frequency spectrum, are used as an illustrative example. The decoupling structure consists of two open-loop resonators with filtering function coupled to the feed line on its edges. By loading the filtering structures, the isolation between the two antennas is improved from poorer than 15 dB to more than 25 dB when the reflection coefficients are still satisfactory in their respective operating frequency bands, showing significant improvements compared to the reference antennas where no filtering structures are introduced. The proposed method can be easily applied to either mobile terminal or 5G CPE (Customer Premise Equipment) devices where both 5G and Wi-Fi are installed as well as many other antennas with similar application scenarios. INDEX TERMS Adjacent frequency bands, filtering structures, mutual coupling reduction, patch antenna, Wi-Fi, 5G.

show abstract

Suppression of Cross-Band Scattering in Multiband Antenna Arrays

Cited by 132 publications

References 18 publications

Integration of 5G Rectangular MIMO Antenna Array and GSM Antenna for Dual-Band Base Station Applications

Integration of 5G Rectangular MIMO Antenna Array and GSM Antenna for Dual-Band Base Station Applications

Miniaturization of dual‐polarized crossed dipole antenna using dielectric loading

Isolation Improvement of Two Tightly Coupled Antennas Operating in Adjacent Frequency Bands Using Filtering Structures

Contact Info

Product

Resources

About