Graphene-silicon diode loaded patch antenna

Yi, Da; Wei, Xing‐Chang; Xu, Yingying; Meng, Nan; Li, E. P.

doi:10.1109/imws-amp.2015.7324934

Cited by 3 publications

(4 citation statements)

References 12 publications

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“…Previous research of the graphene shows that the conductivity of the graphene is changed with frequencies in microwave range. However, this variation was not significantly changed at the same graphene bias.…”

Section: Antenna Design and Resultsmentioning

confidence: 99%

“…Recent research studies promote using and designing same antenna for different applications, for example, radar applications and wireless communications. That implies operating at different frequencies and having steerable radiation pattern.…”

Section: Introductionmentioning

confidence: 99%

“…That implies operating at different frequencies and having steerable radiation pattern. A number of different reconfigurable antennas as planar and three‐dimensional (3‐D) have been developed for wireless applications . Tuning frequency of operation, polarization, and radiation pattern require complex circuits to expand the capability of these systems .…”

Section: Introductionmentioning

confidence: 99%

“…A number of different reconfigurable antennas as planar and three-dimensional (3-D) have been developed for wireless applications. 4 Tuning frequency of operation, polarization, and radiation pattern require complex circuits [8][9][10] to expand the capability of these systems. 11 The steering characteristic of the radiation pattern at a fixed operation frequency is also required and can be used to avoid noise source, improve security, and save energy by better directing the signal toward intended users as shown in Reference 12.…”

Section: Introductionmentioning

confidence: 99%

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Reconfigurable frequency and steerable beam of monopole antenna based on graphene pads

Elsheakh

2020

Int J RF Microw Comput Aided Eng

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This article presents a reconfigurable frequency and steerable beam monopole antenna based on tunable graphene pads operating in both 4G and 5G bands. The proposed antenna consists of printed CPW‐fed circular monopole shapes, with five rectangular strips added with a separation angle of 45°. These strips are connected to monopole by using graphene pads. The monopole antenna operates in the lower 5G band from 3 up to 7.8 GHz at −6 dB reflection coefficient. The antenna has an omni‐radiation pattern over the operating band without any applied bias voltage to the graphene pads. By applying the DC bias voltage, the rectangular strips are connected to the monopole and the designed antenna start to resonate from 1.8 to 8 GHz adding the 4G band frequencies. The steering of the proposed antenna beam started from −60° to 60° according to the bias of the connected graphene pads. The graphene pad exhibits a variable resistance realizing an almost short to an open circuit with and without voltage bias, respectively. The designed antenna is simulated using high frequency structure simulation (HFSS) Ansys ver. 19 and equivalent circuit model of the graphene. The antenna is fabricated using reduced graphene oxide (RGO) pads. Reflection coefficient and radiation pattern measurements as well as simulations are presented with a positive agreement between the results.

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Section: Antenna Design and Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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