A planar UWB MIMO antenna with gain enhancement and isolation improvement for the 5G Mobile platform

Jin, Yunnan; Ko, Minbeom; Yeonjeong, O; Choi, Jaehoon

doi:10.1002/mop.31685

Cited by 12 publications

(8 citation statements)

References 11 publications

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“…NB Antenna #1 is fed by Port #2 (P2). It has an interdigital capacitor to achieve low-frequency operation, near the 3 GHz band, and impedance matching [30]. The position of NB Antenna #1 is chosen preferentially because it operates at the lowest frequency and is the longest of the three NB antennas.…”

Section: Antenna Designmentioning

confidence: 99%

“…Because the UWB antenna is an electric dipole type, the resonances on the UWB antenna are mainly determined by the vertical length of the ground plane [30]. Due to the orthogonal current modes from the ground plane, high isolation characteristics can be achieved without applying any additional decoupling structures in this design.…”

Section: Communication Mode #1mentioning

confidence: 99%

“…The high isolation characteristics of the proposed antenna are realized by designing the UWB antenna as an electric source and the NB antennas as magnetic sources. This results in a fundamentally orthogonal design [27][28][29][30][31] (orthogonal characteristic mode).…”

Section: Introductionmentioning

confidence: 99%

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A Compact Four-Port Coplanar Antenna Based on an Excitation Switching Reconfigurable Mechanism for Cognitive Radio Applications

2019

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In this paper, we propose a compact four-port coplanar antenna for cognitive radio applications. The proposed antenna consists of a coplanar waveguide (CPW)-fed ultra-wideband (UWB) antenna and three inner rectangular loop antennas. The dimensions of the proposed antenna are 42 mm × 50 mm × 0.8 mm. The UWB antenna is used for spectrum sensing and fully covers the UWB spectrum of 3.1–10.6 GHz. The three loop antennas cover the UWB frequency band partially for communication purposes. The first loop antenna for the low frequency range operates from 2.96 GHz to 5.38 GHz. The second loop antenna is in charge of the mid band from 5.31 GHz to 8.62 GHz. The third antenna operates from 8.48 GHz to 11.02 GHz, which is the high-frequency range. A high isolation level (greater than 17.3 dB) is realized among the UWB antenna and three loop antennas without applying any additional decoupling structures. The realized gains of the UWB antenna and three loop antennas are greater than 2.7 dBi and 1.38 dBi, respectively.

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Section: Antenna Designmentioning

confidence: 99%

Section: Communication Mode #1mentioning

confidence: 99%

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A Compact Four-Port Coplanar Antenna Based on an Excitation Switching Reconfigurable Mechanism for Cognitive Radio Applications

2019

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“…The audio/video streams, such as those in high-definition television, require 1 Gbps transmission. To improve the channel capacity, as in 5 G 2 of 12 technology, multiple-input multiple-output (MIMO) antenna is a good choice that can offer massive data transmission rates [17]. MIMO is a multiplexing technology that utilizes multiple antennas at both receiver and transmitter ends resulting in improved communication performance at both ends [18].…”

Section: Introductionmentioning

confidence: 99%

Design of SWB MIMO Antenna with Extremely Wideband Isolation

et al. 2020

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This paper presents a compact planar multiple input multiple output (MIMO) antenna for super wide band (SWB) applications. The presented MIMO antenna comprises two identical patches on the same substrate. Dimensions of the MIMO antenna are 0.17λ × 0.20λ × 0.006λ mm3, with respect to the lowest resonance of 1.30 GHz. The SWB antenna was manufactured using F4B substrate having a dielectric constant of 2.65 that provides a percent impedance bandwidth and bandwidth ratio of 187% and 30.76:1, respectively. The mutual coupling between the antenna elements is suppressed by placing a T-shaped corrugated strip in the mid of two antenna elements. The proposed MIMO antenna exhibits maximum diversity gain of 10 dB, low mutual coupling (<−20 dB), low envelope correlation coefficient (ECC < 0.02), efficiency >80%, and low reflection coefficient (<−10 dB) in the SWB frequency range (1.30 GH–40 GHz). The presented antenna is a good candidate for SWB applications. The designed antenna has been experimentally validated, and the simulated results were also verified.

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“…MIMO antennas have been designed to improve their characteristics in terms of impedance bandwidth, miniaturisation and isolation. Several decoupling techniques are used in MIMO antennas to improve isolation and diversity performance [1][2][3][4][5]. For size miniaturisation, a Yagishaped antenna is designed with better FBR [6].…”

Section: Introductionmentioning

confidence: 99%

High diversity gain super‐wideband single band‐notch MIMO antenna for multiple wireless applications

Saxena

Jain

Awasthi

2019

IET Microwaves, Antennas & Propagation

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A two‐element super‐wideband (SWB) MIMO antenna is proposed in this study. A step impedance microstrip feed line structure is introduced to achieve an SWB impedance bandwidth of 185%. This antenna is designed to be circularly polarised at 1.575 GHz (L1‐band) and 26.0 GHz (K‐band) by using closed ring resonator on the radiating patch. The EBG structures are used to improve FBR in lower (1.5–5 GHz) and higher bands (25–35 GHz). The proposed antenna is designed with compact size 55.6 × 50.5 × 1.6 mm3 on FR‐4 substrate including exotic diversity performance. This MIMO antenna is suitable for defence and handheld devices covering GPS/DCS/PCS/UMTS/Wi‐BRO/ISM/IRNSS/LTE (M/HB)/BLUETOOTH/IoT/WiMAX/X/Ku/K/Ka‐band and it is also suitable for 5G (sub‐6 GHz/mm) applications with channel capacity of 11.34 bps/Hz. Simulated results of MIMO antenna like radiated power‐based ECC and diversity parameters are also verified experimentally, which are in the acceptable range. Finally, this antenna is tested in a realistic environment for SAR application.

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A planar UWB MIMO antenna with gain enhancement and isolation improvement for the 5G Mobile platform

Cited by 12 publications

References 11 publications

A Compact Four-Port Coplanar Antenna Based on an Excitation Switching Reconfigurable Mechanism for Cognitive Radio Applications

A Compact Four-Port Coplanar Antenna Based on an Excitation Switching Reconfigurable Mechanism for Cognitive Radio Applications

Design of SWB MIMO Antenna with Extremely Wideband Isolation

High diversity gain super‐wideband single band‐notch MIMO antenna for multiple wireless applications

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