A Compact Tri-Band Flexible Mimo Antenna Based on Liquid Crystal Polymer for Wearable Applications

Du, Chengzhu; Wang, Xun; Jin, Gao-Ya

doi:10.2528/pierm21042002

Cited by 27 publications

(5 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An antenna that is built on a flexible substrate [24][25][26][27][28] can aid in reducing the overall antenna dimension (especially the profile) as well as the ability to bend the antenna for specific unique applications (such as wearable devices), therefore, it is imperative to study further the performances of antennas using a flexible substrate. Similar to the antenna design that has applied rigid substrate, flexible antenna design can also be applied to many wireless applications, such as the UWB [25], MIMO wearable [26,27], and MIMO reconfigurable type [28]. However, the above reported flexible antennas are twoport LP antennas with undesirable isolation levels between the antenna elements.…”

Section: Introductionmentioning

confidence: 99%

Dual Polarized, Multiband Four-Port Decagon Shaped Flexible MIMO Antenna for Next Generation Wireless Applications

et al. 2022

View full text Add to dashboard Cite

A compact, dual polarized, multiband four-port flexible Multiple Input Multiple Output (MIMO) antennae with the connected ground and high isolation is designed with computation and experimental measurement studies. All four monopole radiators are embedded decagon-shaped flexible FR-4 substrate with an outer radius of 10 mm in order to accomplish circularly polarized (CP) radiations, bandwidth enhancement, and compact size of only 45×38×0.2 mm 3 (0.375λ × 0.316λ × 0.0016λ, at lowest resonating frequency 2.5GHz). The interconnected ground structure is loaded with an Interlaced Lozenge Structure (ILS) to suppress the surface wave radiations resulting in low mutual coupling between the radiators. The proposed MIMO antenna demonstrates measured 10-dB impedance bandwidths of 9.63% (2.37-2.61 GHz), 28. in the LTE 38/40, Sub-6 GHz 5G NR n77/n78, WLAN and Wi-Fi bands, respectively. Furthermore, broad 3-dB Axial Ratio Bandwidth (ARBW) of 28. with gain greater than 4 dBi and efficiency above 80% are achieved. Finally, the bending analysis of the proposed flexible MIMO antenna along the X-and Y-directions shows good performances in terms of scattering parameters, 3 dB ARBW, and MIMO diversity parameters.

show abstract

Section: Introductionmentioning

confidence: 99%

Dual Polarized, Multiband Four-Port Decagon Shaped Flexible MIMO Antenna for Next Generation Wireless Applications

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The following table shows some literature about Sub-6G antenna in recent years. In these references, 1,3,[18][19][20][21][22][23][24] all designed antennas work at Sub-6GHz band, and antennas of references [18][19][20] belong to multi-band MIMO antennas. Antennas of references 1,3,[21][22][23][24] are wideband MIMO antennas, antennas of references 1,21 are only two-port MIMO antennas, and other antennas of references 3,23,24 are four-port MIMO antennas without connected ground.…”

Section: Performance Comparisonmentioning

confidence: 99%

“…Recently, many MIMO antennas have been studied, 2–17 some multiband and wideband MIMO antennas for Sub‐6GHz are research hotspot currently 3,18–24 . In, 21 a small dual‐port Sub‐6 GHz MIMO antenna for 5G system is designed, with bandwidth of 4.9–5.06 GHz and isolation below ‐21.3 dB.…”

Section: Introductionmentioning

confidence: 99%

High isolation 4‐port MIMO sloted antenna for Sub‐6 GHz wireless applications

Ren

You

2023

Micro & Optical Tech Letters

View full text Add to dashboard Cite

Aiming at the application of Sub‐6 GHz band, this paper presents a high isolation four‐port MIMO slot antenna with CPW feeding mode. About this antenna, two parallel binary antennas are oppositely arranged with connected ground, and isolation branches are adopted to improve isolation. Each element antenna is realized through elliptical shape patch and trident structure feed line. The measured results show that its working frequency band is 1.82–6.5 GHz band, with ports isolation less than −20 dB. In addition, its other performance parameters are good, such as gain of 7.03 dB and ECC parameter below 0.004, and CCL is less than 0.3 bps/Hz. The antenna has high isolation and it can not only work in the mobile communication frequency bands such as n41, n77, n78, and n79, but also work in the frequency band of the IoT, such as WiFi5, V2X, and DSRC.

show abstract

“…In order to improve drug compliance, RFID technologies could be applied and used. By combining RFID wristbands on patients with barcodes on drug containers, the Wisely Aware RFID Dosage (WARD) system for hospitals can reduce the risk of medication errors and create a safe and effective patient care environment [33]. Furthermore, a comparable but slightly more advanced system is demonstrated, which combines active and passive RFID tags to localize a patient in a specific region and detect the correct doze of prescribed medication.…”

Section: Patient Drug Compliancementioning

confidence: 99%

Read Range Investigation of RFID Tag on Human Chest

Nabil Salem,

Dewan,

Ayop

et al. 2023

Elektrika

View full text Add to dashboard Cite

Radio Frequency Identification (RFID) technology for automatic identification, tracking, and monitoring of human is in great demand by the healthcare industry. The existence of passive tag with proximity to human body in general, represents an intrinsic challenge because of the high losses of body tissues A commercial passive ultra-high frequency (UHF) RFID tag with 860 MHz-960 MHz operating frequency range is modelled to study and analyze the effect on the read range parameter by placing the RFID tag in proximity to human body model (the chest) with respect to the placement of pocket position of any shirt The body model of the chest is consisting of three layers which are skin, fat and muscle. The commercial RFID tag that has been used for this study was INLAY-9662. The measurement is done on the commercial tag prior to modelling and simulation in the CST. Furthermore, the simulation was carried on two conditions: (1) in free-space, and (2) in proximity to human body. In addition, 1 mm, 3 mm and 10 mm have been set as the gap between the modelled tag and the chest model to examine the impacted read range at different distances. The results obtained have shown some variations when the distances are varied from the human chest. The read range were achieved at 0.5 m, 1.3 m and 2.4 m for 1 mm, 3 mm and 10 mm respectively. This study has shown the capabilities of human body to reduce the efficiency of the read range whenever RFID tags are placed in proximity to human body.

show abstract

A Compact Tri-Band Flexible Mimo Antenna Based on Liquid Crystal Polymer for Wearable Applications

Cited by 27 publications

References 22 publications

Dual Polarized, Multiband Four-Port Decagon Shaped Flexible MIMO Antenna for Next Generation Wireless Applications

Dual Polarized, Multiband Four-Port Decagon Shaped Flexible MIMO Antenna for Next Generation Wireless Applications

High isolation 4‐port MIMO sloted antenna for Sub‐6 GHz wireless applications

Read Range Investigation of RFID Tag on Human Chest

Contact Info

Product

Resources

About