Inkjet Printing of Multilayer Millimeter-Wave Yagi-Uda Antennas on Flexible Substrates

Tehrani, Bijan; Cook, Benjamin S.; Tentzeris, Manos M.

doi:10.1109/lawp.2015.2434823

Cited by 87 publications

(39 citation statements)

References 13 publications

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“…These authors also showed a 14.6 dB return loss at 25.8 GHz. The first demonstration of a Yagi-Uda antenna was done a year earlier using IJP Ag (1.1 × 10 7 S/m) and SU-8 dielectric (ε = 3.2, tanδ = 0.04) on a liquid crystalline polymer laminate substrate that has a high 8 dBi gain at 24.5 GHz with a >33 dB S 11 [92]. Several horn-type antennas have also been demonstrated with the best performance going to a hybrid printing and plating process [114,115].…”

Section: Printed Antennasmentioning

confidence: 99%

Printable Materials for the Realization of High Performance RF Components: Challenges and Opportunities

Rosker

Sandhu

Hester

et al. 2018

International Journal of Antennas and Propagation

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Printing methods such as additive manufacturing (AM) and direct writing (DW) for radio frequency (RF) components including antennas, filters, transmission lines, and interconnects have recently garnered much attention due to the ease of use, efficiency, and low-cost benefits of the AM/DW tools readily available. The quality and performance of these printed components often do not align with their simulated counterparts due to losses associated with the base materials, surface roughness, and print resolution. These drawbacks preclude the community from realizing printed low loss RF components comparable to those fabricated with traditional subtractive manufacturing techniques. This review discusses the challenges facing low loss RF components, which has mostly been material limited by the robustness of the metal and the availability of AM-compatible dielectrics. We summarize the effective printing methods, review ink formulation, and the postprint processing steps necessary for targeted RF properties. We then detail the structure-property relationships critical to obtaining enhanced conductivities necessary for printed RF passive components. Finally, we give examples of demonstrations for various types of printed RF components and provide an outlook on future areas of research that will require multidisciplinary teams from chemists to RF system designers to fully realize the potential for printed RF components.

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Section: Printed Antennasmentioning

confidence: 99%

Printable Materials for the Realization of High Performance RF Components: Challenges and Opportunities

Rosker

Sandhu

Hester

et al. 2018

International Journal of Antennas and Propagation

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“…New generation printers offer precise printing using picolitre volume cartridges. Printing quality is controlled by the jetting waveform, the jetting voltage of the nozzles, the jetting frequency, the cartridge temperature, the platen temperature (where the substrate is placed), and the resolution of the pattern [ 91 , 92 ]. After the printing of the antenna design, sintering is necessary for removing the solvent and capping agent and attaining electrical conductivity [ 93 ].…”

Section: Fabrication Techniques For Flexible Antennasmentioning

confidence: 99%

Flexible Antennas: A Review

et al. 2020

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The field of flexible antennas is witnessing an exponential growth due to the demand for wearable devices, Internet of Things (IoT) framework, point of care devices, personalized medicine platform, 5G technology, wireless sensor networks, and communication devices with a smaller form factor to name a few. The choice of non-rigid antennas is application specific and depends on the type of substrate, materials used, processing techniques, antenna performance, and the surrounding environment. There are numerous design innovations, new materials and material properties, intriguing fabrication methods, and niche applications. This review article focuses on the need for flexible antennas, materials, and processes used for fabricating the antennas, various material properties influencing antenna performance, and specific biomedical applications accompanied by the design considerations. After a comprehensive treatment of the above-mentioned topics, the article will focus on inherent challenges and future prospects of flexible antennas. Finally, an insight into the application of flexible antenna on future wireless solutions is discussed.

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“…For example, a flexible inkjet-printed broadband UHF Radio Frequency Identification (RFID) on liquid crystal polymer (LCP) substrate is developed for sensing applications in [19]. A multilayer millimeter-wave yagi-uda antenna and proximity-fed patch arrays on flexible substrates using purely additive inkjet printing technology is proposed in [20], [21]. A compact inkjet-printed ultrawideband antenna on a Kapton polyimide substrate is used for flexible and wearable electronics in [22].…”

Section: Introductionmentioning

confidence: 99%