Inkjet-Printed Flexible Reconfigurable Antenna for Conformal WLAN/WiMAX Wireless Devices

Saeed, Saud M.; Balanis, C.A.; Birtcher, Craig R.

doi:10.1109/lawp.2016.2547338

Cited by 106 publications

(72 citation statements)

References 9 publications

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“…The gain is computed at discrete frequencies that are of particular interest. The gain requirement is fulfilled in our proposed antenna as compared to [2], [19]. In [2], pin diode diminishes the gain and efficiency of the bow-tie antenna because of insertion loss introduced by the resistance diodes.…”

Section: Resultsmentioning

confidence: 93%

“…Although [10] has the bandwidth greater than 500 MHz at three bands, but it employs five switches and achieves just four resonance bands. In [19], a very thin flexible substrate is used, but the bandwidth is even less than 300 MHz in all the three resonance bands. It can be concluded that the proposed antenna has small size and shows better performance in terms of impedance bandwidth.…”

Section: Statesmentioning

confidence: 99%

“…One pin diode is employed in the T-shaped antenna for WLAN and WiMAX applications. However, its gain is comparatively low and its fabrication is expensive [19].…”

Section: Introductionmentioning

confidence: 99%

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A Compact Flexible and Frequency Reconfigurable Antenna for Quintuple Applications

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Arshad²,

Naqvi³

et al. 2017

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Section: Resultsmentioning

confidence: 93%

Section: Statesmentioning

confidence: 99%

See 1 more Smart Citation

A Compact Flexible and Frequency Reconfigurable Antenna for Quintuple Applications

Hassan¹,

Arshad²,

Naqvi³

et al. 2017

RADIOENGINEERING

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“…The value of Y can be determined by measuring the CPW with no NWs (or this case, the CPW line with NWs but very large negative V sg -resulting in Y NW = 0). Therefore, if we find the difference between these loaded and unloaded values we can determine the additional distributed NW admittance Figure 3e shows the extracted values of G NW using Equations (S6) and (S7) (Supporting Information) and Equation (7). The measurements are then repeated for a CPW line with NWs resulting in γ/Z 0 from Equation (6).…”

Section: Wwwadvelectronicmatdementioning

confidence: 99%

“…[1] Printable filters, [2] antennas, [3] true-time delay lines, [4] wearable frequency selective surfaces (FSSs), [5,6] reconfigurable antennas, [7] phase-arrays, [8] and reflect arrays [9] have been realized, which can enable wireless sensors in Internet of things (IoT) [10] and high data rate mm-wave fifth generation (5G) communications. [1] Printable filters, [2] antennas, [3] true-time delay lines, [4] wearable frequency selective surfaces (FSSs), [5,6] reconfigurable antennas, [7] phase-arrays, [8] and reflect arrays [9] have been realized, which can enable wireless sensors in Internet of things (IoT) [10] and high data rate mm-wave fifth generation (5G) communications.…”

mentioning

confidence: 99%

Solution‐Processed InAs Nanowire Transistors as Microwave Switches

Mirkhaydarov

Votsi

Sahu

et al. 2018

Adv Elect Materials

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and millimeter (mm)-wave applications, enabling rapid maskless prototyping, low temperature processing, and high density integration of microwave elements on large-area, lightweight flexible substrates. [1] Printable filters, [2] antennas, [3] true-time delay lines, [4] wearable frequency selective surfaces (FSSs), [5,6] reconfigurable antennas, [7] phase-arrays, [8] and reflect arrays [9] have been realized, which can enable wireless sensors in Internet of things (IoT) [10] and high data rate mm-wave fifth generation (5G) communications. [11,12] Microwave switches are key to enable reconfigurable antennas, arrays, and FSSs, to modify their radiation pattern, resonant frequency, and polarization. [13,14] Solution processable nanomaterials permit the integration of semiconductors and conductors, using low-temperature and inexpensive processing capability while compatible with flexible substrates. Main classes of solution processable semiconducting materials are conjugated mole cules, carbon nanotubes (CNTs), graphene flakes (GFs), and inorganic semiconducting nanoparticle inks, including semiconducting nanowires (NWs). Although organic semiconductors are the most convenient for solution based deposition, the low charge carrier mobility, 0.1-10 cm 2 V −1 s −1 [15,16] of organic printed field-effect transistors (FETs) results in very high device resistance from tens of kΩ to MΩ, limiting their application in microwave circuits. Other materials, such as CNTs and GFs, require chemical functionalization to be solution processable, which degrades charge transport properties resulting in field-effect mobilities of 9-42 cm 2 V −1 s −1 for CNTs [17][18][19] and below 1.2 cm 2 V −1 s −1 for GFs. [20][21][22] These low mobilities give rise to high channel resistances, thus making these materials less desirable for solution processable high performance microwave switches. The most promising class of materials are semiconducting single crystal NWs, such as III-V materials, that possess high charge carrier mobility in the range of hundreds to few thousand cm 2 V −1 s −1 , [23,24] and they do not require surface functionalization for ink formulations.In this work, we focus on solution processable InAs NWs due to the high electron mobility, reaching 6500 cm 2 V −1 s −1 at room temperature, [25] and low contact resistance with metal tracks, [26][27][28] thereby avoiding the very resistive Schottky barriers common with other semiconducting NWs. [29] Additionally, The feasibility of using self-assembled InAs nanowire bottom-gated fieldeffect transistors as radio-frequency and microwave switches by direct integration into a transmission line is demonstrated. This proof of concept is demonstrated as a coplanar waveguide (CPW) microwave transmission line, where the nanowires function as a tunable impedance in the CPW through gate biasing. The key to this switching capability is the high-performance, low impedance InAs nanowire transistor behavior with field-effect mobility of ≈300 cm 2 V −1 s −1 , on/off ratio of 10 3 , and resistance ...

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Smart Nanotextiles for Communication

Ibanez‐Labiano¹,

Jilani²,

Zhang³

et al. 2022

Smart Nanotextiles

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Together with wireless technology, advances in nanotechnology and rapid and scalable synthesis of nanomaterials including the 2D graphene has transformed the realms of biomedical sciences. Recent research in the areas of drug delivery, cancer therapy, bio-sensing and bio-imaging have exploited the unique structural and physiological features of graphene and its different forms. Along with the Graphene, several other nanomaterials including carbon nanotubes (CNTs), make excellent candidates for applications associated with loading of drugs, cellular imaging, sensing other molecules and in-vivo cancer studies due to their biocompatibility and stability. Assimilating from the fundamentals of electromagnetic, wireless communication, medical and material science, a novel concept of nanonetworks was first introduced in 2008, which stems from the concept that a collection of nanodevices have the potential to harness the innate communication capabilities of the human body, thereby allowing them to cooperate and share information. It is anticipated that the advanced healthcare diagnosis can be realised if an efficient communication mechanism and data transfer are established between these nanodevices.

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Inkjet-Printed Flexible Reconfigurable Antenna for Conformal WLAN/WiMAX Wireless Devices

Cited by 106 publications

References 9 publications

A Compact Flexible and Frequency Reconfigurable Antenna for Quintuple Applications

A Compact Flexible and Frequency Reconfigurable Antenna for Quintuple Applications

Solution‐Processed InAs Nanowire Transistors as Microwave Switches

Smart Nanotextiles for Communication

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