Flexible plastic substrate-based inkjet printed CPW resonators for 60 GHz ISM applications

Hettak, K.; Ross, Tyler; James, R.; Momciu, Adrian; Wight, J.S.

doi:10.1109/eumc.2014.6986655

Cited by 6 publications

(4 citation statements)

References 8 publications

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“…Printed flexible electronics technology provides antennas with a simple fabrication method and flexible/wearable characteristics that distinguish them from traditional rigid antennas. 3 Flexible antennas based on printed flexible electronics technology have been designed and developed by a variety of printing techniques for a range of applications including wireless communication, [4][5][6] medical care, 7 sensing, 8 health monitoring, 9,10 and military affairs. 11 Inkjet printing, which directly deposits solution-processable materials onto the specific region of the substrate, 12 shows enormous potential in the fabrication of flexible and wearable antennas since this technique does not require a mask and allows designs to be modified and printed at any time.…”

Section: Introductionmentioning

confidence: 99%

Copper particle-free ink with enhanced performance for inkjet-printed flexible UWB antennas

Yang,

Dong,

Guo

et al. 2023

J. Mater. Chem. C

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Section: Introductionmentioning

confidence: 99%

Copper particle-free ink with enhanced performance for inkjet-printed flexible UWB antennas

Yang,

Dong,

Guo

et al. 2023

J. Mater. Chem. C

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“…Finally, closer drops lead to the formation of bulges along the length of the line. Generally, individual drops appear at large DS's above ∼50 µm while bulging is noticed for too small ones [22,23]. The antenna design as well as all the printing setup conditions are then uploaded to the printer using the accompanying software.…”

Section: Methodsmentioning

confidence: 99%

Effect of silver nanoparticle ink drop spacing on the characteristics of coplanar waveguide monopole antennas printed on flexible substrates

Mohassieb

Kirah

Dörsam

et al. 2017

IET Microwaves, Antennas & Propagation

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Inkjet printing is a low‐cost technique suitable to fabricate flexible electronic devices using solutions of conductive nanoparticles on any type of substrate without material waste as in conventional etching techniques. In this study, a low‐profile wideband coplanar waveguide‐fed monopole antenna operating at 20 GHz is designed and printed using silver nanoparticle ink on polyethylene terephthalate (PET) and on Epson paper substrates. The effects of varying the drop spacing (DS) of the ink on the conductivity of the printed films as well as on the antenna parameters were fully investigated by numerical simulations and by measurements. A conductivity of 1.8 × 107 Ω−1 m−1 was obtained for the films printed on PET using a DS of 30 µm leading to superior antenna performance with an achieved gain and antenna radiation efficiency of 1.67 dB and 96%, respectively. In addition, the size reduction reached 99%. On the other hand, antennas on Epson paper substrate show an |S11| bandwidth <−10 dB extending from 17.18 up to 24.3 GHz, leading to a fractional bandwidth of 34.34%.

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“…The 60 GHz CPW-fed monopole antenna was printed with a DMP-2800 series inkjet printing system. The measured impedance bandwidth of the printed antenna, defined by return loss of less than −10 dB, is from 60 to 65 GHz [ 22 ] . However, in the structural design, it is not possible to obtain UWB features while avoiding large dielectric layer thickness and volume at the same time.…”

Section: Introductionmentioning

confidence: 99%

An inkjet-printed bendable antenna for wearable electronics

Yu¹,

Zhang²,

Zheng³

et al. 2024

IJB

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Flexible antennas, which can conform to the skin and transfer signals to terminals, are particularly useful for wearable electronics. Bending, which frequently occurs to flexible devices, significantly affects the performance of flexible antennas. Inkjet printing has been used as an additive manufacturing technology for fabricating flexible antenna in recent years. However, there is little research on the bending performance of inkjet printing antenna in both simulation and experiment. This paper proposes a bendable coplanar waveguide antenna with a small size of 30 × 30 × 0.05 mm3 by combining the advantages of fractal antenna and serpentine antenna, which realizes the ultra-wideband feature and avoids the problems of large dielectric layer thickness (greater than 1 mm) and large volume of traditional microstrip antenna at the same time. The structure of the antenna was optimized by simulation using the Ansys high-frequency structure simulator, and the antenna was fabricated on a flexible polyimide substrate by inkjet printing. The experimental characterization results show that the central frequency of the antenna is 2.5 GHz, the return loss is −32 dB, and the absolute bandwidth is 850 MHz, which is consistent with the simulation results. The results demonstrate that the antenna has anti-interference capability and can meet the ultra-wideband characteristics. When the traverse and longitudinal bending radius are greater than 30 mm and skin proximity greater than 1 mm, the resonance frequency offsets are mostly within 360 MHz, and return losses of the bendable antenna are within the −14 dB compared with the no bending condition. The results exhibit that the proposed inkjet-printed flexible antenna is bendable and promising for wearable applications.

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Flexible plastic substrate-based inkjet printed CPW resonators for 60 GHz ISM applications

Cited by 6 publications

References 8 publications

Copper particle-free ink with enhanced performance for inkjet-printed flexible UWB antennas

Copper particle-free ink with enhanced performance for inkjet-printed flexible UWB antennas

Effect of silver nanoparticle ink drop spacing on the characteristics of coplanar waveguide monopole antennas printed on flexible substrates

An inkjet-printed bendable antenna for wearable electronics

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