Study of Electrical and Mechanical Characteristics of Inkjet-Printed Patch Antenna Under Uniaxial and Biaxial Bending

Zhou, Yi; Sivapurapu, Sridhar; Chen, Rui; Amoli, Nahid Aslani; Bellaredj, Mohamed Lamine Fayçal; Swaminathan, Madhavan; Sitaraman, Suresh K.

doi:10.1109/ectc.2019.00298

Cited by 11 publications

(2 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Additive manufacturing (AM) has rapidly expanded threedimensional design space to enable radio frequency (RF) device designs that cannot be produced using conventional manufacturing. This additional degree of processing freedom has been used to additively manufacture a diverse array of RF structures from simple transmission lines [1]- [3], waveguides [4], [5], and patch antennas [6]- [8] to more complex three-dimensional RF filters [9]- [11] and antennas exhibiting unique characteristics [12]- [16] that cannot be achieved in planar configurations alone. Compared to conventional techniques, in which the signal and ground metal must be rolled-on or electrodeposited and subsequently etched, AM uses direct metal deposition to pattern features in a single step.…”

Section: Introductionmentioning

confidence: 99%

Ultralow RF Signal Loss in Aerosol Jet Printed Silver Microstrip Lines up to 18 GHz

et al. 2022

View full text Add to dashboard Cite

Printed radio frequency (RF) electronic components are often prohibitively lossy due to the materials challenges involved in additively manufacturing metals and dielectrics. We use aerosol jet printing of reactive silver inks to fabricate microstrip transmission lines onto commercial RF boards and subsequently extract the insertion loss of the printed silver through bisect de-embedding of the transmission lines. We directly compare the performance of our printed silver microstrips to conventional copper-clad microstrips to benchmark the efficacy of additive manufacturing against traditional processing methods. With an insertion loss nearing that of conventional copper, reactive silver ink printed traces offer dense continuous metals that can reliably act as conductors for RF applications. In addition to the morphological effects on loss from the printed metal itself, we also observe that the effect of substrate surface texture contributes to unexpected loss that may be mitigated by smoothing the surface or aligning the print direction to minimize these effects. Metallizing passive RF components using reactive inks offers a practical approach which will allow RF designers to take advantage of three-dimensional space. This is possible without sacrificing the necessary high conductivity and low loss needed to produce high performance devices for use within aerospace and communications.INDEX TERMS 3D printing, additive manufacturing, microstrip line, printed circuit board.

show abstract

Section: Introductionmentioning

confidence: 99%

Ultralow RF Signal Loss in Aerosol Jet Printed Silver Microstrip Lines up to 18 GHz

et al. 2022

View full text Add to dashboard Cite

show abstract

“…In the actual applications of flexible conductors, different mechanical loading conditions or a combination of them, are applied, such as stretching, bending, twisting and folding. The serpentine shape is one of the most popular structures due to its superior performance in various mechanical loading conditions, as discussed in previous work [12,[21][22][23][24][25][26][27]. In an early study, a so-called self-similar serpentine structure was proposed as the flexible interconnects for a flexible battery system [28,29].…”

Section: Introductionmentioning

confidence: 99%

An automatic numerical approach to optimize flexible serpentine structure design

Chen¹,

Sitaraman²

2022

Flex. Print. Electron.

View full text Add to dashboard Cite

The serpentine shape has been increasingly popular for the conductor design in flexible electronics due to its superior compliance and stretchability performance. The stretchability of the serpentine structure is highly dependent on the material strain threshold, serpentine geometry design, and the attachment substrate property. Therefore, identifying the parameters and their corresponding importance factors to the stretchability of the structure will help optimize the serpentine geometry. In the current work, a fully automated finite-element model has been developed to calculate the normalized maximum strain in the free-standing serpentine structure under uniaxial stretch loading conditions. A parametric study has been conducted to understand the serpentine geometry impacts on the maximum strain in the serpentine structure under the equivalent 10% uniaxial strain loading condition. The study shows that longer straight-line length, larger arc segment angle, and smaller serpentine with a fixed arc segment radius can help to reduce the maximum strain in the serpentine structure under uniaxial stretching. A random forest machine learning model suggests that the serpentine width and arc segment angle have the highest impact on the maximum strain in the serpentine structure. In the end, the proposed optimization strategy has also been used to optimize the strain distribution when the serpentine structure is attached to a polymer substrate.

show abstract

Patch antenna in stacked HR-Si interposers

Jin

2022

TSV 3D RF Integration

View full text Add to dashboard Cite

Study of Electrical and Mechanical Characteristics of Inkjet-Printed Patch Antenna Under Uniaxial and Biaxial Bending

Cited by 11 publications

References 13 publications

Ultralow RF Signal Loss in Aerosol Jet Printed Silver Microstrip Lines up to 18 GHz

Ultralow RF Signal Loss in Aerosol Jet Printed Silver Microstrip Lines up to 18 GHz

An automatic numerical approach to optimize flexible serpentine structure design

Patch antenna in stacked HR-Si interposers

Contact Info

Product

Resources

About