Reconfigurable Yagi-Uda antenna based on a silicon reflector with a solid-state plasma

Kim, Da‐Jin; Park, Jang-Soon; Kim, Cheol Ho; Hur, Jae; Kim, Choong‐Ki; Cho, Young‐Kyun; Ko, Jun-Bong; Park, Bonghyuk; Kim, Dongho; Choi, Yang‐Kyu

doi:10.1038/s41598-017-17425-8

Cited by 9 publications

(5 citation statements)

References 36 publications

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“…Moreover, it is difficult to design an antenna due to embedded metallic elements, such as bias lines and gold wires, for applying DC bias. We overcame these problems in previous studies and showed that silicon material can be used as a reflector for a Yagi–Uda antenna 20 . However, the success of the silicon reflector only implies that the silicon has enough conductivity to simply reflect an incoming wave.…”

Section: Introductionmentioning

confidence: 99%

A frequency reconfigurable dipole antenna with solid-state plasma in silicon

Kim

Cho

et al. 2018

Sci Rep

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A frequency reconfigurable dipole antenna based on a silicon radiator is presented. The silicon radiator is activated with the aid of highly dense solid-state plasma by injecting carriers into the intrinsic region of p-i-n diodes. The fabrication and design guideline of the reconfigurable dipole antenna with this plasma radiator are described. When the plasma radiator is activated or deactivated, the length of the dipole arm changes, which means that the operating frequency of the dipole antenna is reconfigurable. When all the channels in the plasma radiator are activated, the operating frequency is tuned from 6.3 GHz to 4.9 GHz. The measured tunable bandwidth of our fabricated dipole antenna is approximately 31%, which is a practical value in comparison to conventional frequency reconfigurable antennas whose tunable bandwidth is in a range from 20% to 50%. To further support the validity of our results, we provide the well-matched simulation results from an antenna simulation. These results demonstrate that silicon with its commercial technology, which has not attracted attention in comparison to a metal antennas, is a promising tunable material for a frequency reconfigurable antenna. This plasma-based reconfigurable antenna has great potential for use in the dynamic communication environment.

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Section: Introductionmentioning

confidence: 99%

A frequency reconfigurable dipole antenna with solid-state plasma in silicon

Kim

Cho

et al. 2018

Sci Rep

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“…On the contrary, the low carrier concentration caused by low voltage will lead the SSP to an unexcited eigenstate with little ability to carry the EMW (equivalent to dielectric). Therefore, the exceptional reconfigurability can be obtained by artificially inspiring SSP with various structures and positions [20]- [22].…”

Section: And Advancedmentioning

confidence: 99%

“…Further, based on State II, when two L-shaped SSP resonators on the second layer are also motivated (we call this case State III), the corresponding operating band will be shifted to the low-frequency region while holding on the function of State II. + jωω c ) [20]- [22]. The plasma frequency of two helical and four L-shaped SSP patches are ω p1 = 2.9 × 10 14 rad/s and ω p2 = 1.2 × 10 15 rad/s, respectively.…”

Section: Structure Designmentioning

confidence: 99%

“…The absorption, co-reflection, cross-reflection, total reflection, and transmission spectra of the proposed SSP metamaterial in State I: (a) TE mode, and (b) TM mode. The permittivity of SSP is frequency-dependent which can be described by Drude model ε p (ω) = 12.4 − ω p / (ω 2+ jωω c )[20]-[22]. The plasma frequency of two helical and four L-shaped SSP patches are ω p1 = 2.9 × 10 14 rad/s and ω p2 = 1.2 × 10 15 rad/s, respectively.…”

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confidence: 99%

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A Solid State Plasma Multifunctional Metamaterial and Its Application for Energy Absorbing and Cross Polarization Conversion

Zeng

Tian

et al. 2020

IEEE Access

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With the increasing expectations of electromagnetic devices, the defects of monofunctional devices that are susceptibly limited by external constraints are becoming more and more obvious and the integration of multiple functions has gradually become the pursuit of researchers. In this paper, a novel multifunctional metamaterial tailored by the solid state plasma (SSP) is proposed. By inspiring the particular SSP resonators, such a metamaterial can be handily switched back and forth among two functions and form three working states. When the proposed SSP metamaterial is served in State I, its function embodies as an energy absorber and the absorption which is over 90% for TE and TM modes are 5.84-7.30 GHz and 5.41-6.34 GHz whose relative bandwidths (RBs) are 22.22% and 15.83%, respectively. States II and III keep the same functionality of cross-polarization conversion but a distinct operating band. The polarization conversion rate (PCR) of State II which is higher than 90% is 7.40-12.20 GHz (the RB is 48.98%) and this operational range will be shifted to 5.71-8.47 GHz (the RB is 38.92%) after switching to State III. Compared with the conventional tunable devices, this SSP metamaterial has the advantage of functional diversity and it provides a new design idea of absorber and polarization converter to promote potential applications of multifunctional devices.

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“…Solid state plasma (SSP) [26][27][28] has excellent reconfigurable characteristics and can be integrated with an RF front-end system. Its structure dimension has greater freedom for realizing the multi-function, miniaturization, and integration of the whole system, which is quite suitable for microwave devices.…”

Section: Introductionmentioning

confidence: 99%

A tunable metamaterial-based linear-to-circular polarization converter regulated solid state plasma in S-band

Zeng¹,

Zhang²,

Zhang³

2020

J. Opt.

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As the most widely used band in wireless communication systems, S-band is often used in many military and civil fields. In this paper, with the aid of the reconfigurability realized by the solid state plasma (SSP), a tunable metamaterial-based polarization converter is proposed and theoretically investigated. Through the premeditated excitation of the SSP resonators in the specific region, the linear-to-circular polarization conversions with two different operating states can be realized and switched to each other. The numerical results show that the polarization converter can obtain circularly polarized waves in two separate bands (2.15–2.63 GHz and 3.18–3.71 GHz) when our design is in State I, and the dual operating bands expands and merges into a consecutive ultra-wideband range (2.04–3.67 GHz) when our design is switched to State II. The total tunable working range of the presented polarization converter can essentially cover the whole S-band and the phenomenon of the isolation and fusion of the operating band possesses great potential application value in the fields of radar radomes, polarization separation, electromagnetic shielding, and so on.

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Reconfigurable Yagi-Uda antenna based on a silicon reflector with a solid-state plasma

Cited by 9 publications

References 36 publications

A frequency reconfigurable dipole antenna with solid-state plasma in silicon

A frequency reconfigurable dipole antenna with solid-state plasma in silicon

A Solid State Plasma Multifunctional Metamaterial and Its Application for Energy Absorbing and Cross Polarization Conversion

A tunable metamaterial-based linear-to-circular polarization converter regulated solid state plasma in S-band

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