High-Gain Fabry–Pérot Antenna With Reconfigurable Scattering Patterns Based on Varactor Diodes

Zhang, Jiahao; Liu, Ying; Jia, Yongtao; Zhang, Rongqiao

doi:10.1109/tap.2021.3111234

Cited by 24 publications

(13 citation statements)

References 29 publications

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“…However, these studies only focus on decreasing the scattering characteristics of the antenna, lacking the flexibility to manipulate the wavefront. Recently, some research studies − on the metasurface merging antenna have been reported to realize active and passive manipulation of EM waves, which is achieved by introducing active devices in the single-layer antenna structure. However, the active and passive control of these studies is completely independent, and the interactions between them are rarely considered.…”

Section: Introductionmentioning

confidence: 99%

Smart Metasurface for Active and Passive Cooperative Manipulation of Electromagnetic Waves

Jiang

Zheng

et al. 2022

ACS Appl. Mater. Interfaces

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Integrating active and passive manipulation of electromagnetic (EM) waves has significant advantages for the caliber synthesis of microwave and optical integrated devices. In previous schemes, most reported designs focus only on active ways of manipulating self-radiating EM waves, such as antennas and lasers, or passive ways of manipulating external incident EM waves, such as lenses and photonic crystals. Here, we proposed a paradigm that integrates active and passive manipulation of EM waves in a reconfigurable way. As demonstrated, circularly polarized, linearly polarized, and elliptically polarized waves with customized beams are achieved in passive operation by merging Pancharatnam−Berry phases and dynamic phases, while the radiating EM waves with a customized gain are achieved by coupling the coding elements with the radiation structure in the active manipulation. Either active or passive manipulation is determined by the sensed signals and operating state to reduce detectability. Encouragingly, the proposed strategy will excite new sensing and communication opportunities, enabling advanced conceptions for next-generation compact EM devices.

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Section: Introductionmentioning

confidence: 99%

Smart Metasurface for Active and Passive Cooperative Manipulation of Electromagnetic Waves

Jiang

Zheng

et al. 2022

ACS Appl. Mater. Interfaces

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“…A single function system cannot meet the requirement of working and causes waste resources. In order to solve above problems, some researchers have proposed loading active devices such as PIN diode, Micro‐Electro‐Mechanical‐Systems on metasurfaces 15–24 . The type of metasurfaces is called reconfigurable metasurfaces, in which the binary states are usually represented by two different values of phases, amplitudes or polarizations.…”

Section: Introductionmentioning

confidence: 99%

“…In order to solve above problems, some researchers have proposed loading active devices such as PIN diode, Micro-Electro-Mechanical-Systems on metasurfaces. [15][16][17][18][19][20][21][22][23][24] The type of metasurfaces is called reconfigurable metasurfaces, in which the binary states are usually represented by two different values of phases, amplitudes or polarizations. In the last few years, some excellent works have been proposed.…”

Section: Introductionmentioning

confidence: 99%

A 1‐bit reconfigurable metasurface antenna for ground penetrating radar application

Wang

Zeng

Zhao

et al. 2022

Int J RF Mic Comp-Aid Eng

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A 1‐bit reconfigurable metasurface antenna for Ground penetrating radar (GPR) application is proposed. The element is loaded with one PIN diode, which can be electronically controlled to generate two states with 200° reflection phase difference at 2.0 GHz. The two states are regarded as “1” and “0.” Based on the proposed element, a 10 × 10 reconfigurable metasurface is designed. Besides, a digital control board is used to control the state of element. A reconfigurable metasurface antenna is simulated and fabricated. The simulated and experimented results indicate that the proposed antenna can achieve ±40° beam scanning with a gain tolerance of 3 dB and the maximum gain of 16.7 dBi. In addition, the beam‐forming performance can be achieved, such as multibeam. These properties ensure the proposed antenna has great potential in GPR and microwave imaging systems.

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“…Selfconfigurable metasurface provides both gain enhancement and absorption at the same frequency [15]. Reconfigurable metasurface helps in shaping the beam of the antenna together with gain enhancement in different frequencies [16][17][18]. Bidirectional high gain patch antenna is created using a focusing metasurface, and the reflective focusing metasurface is used to create a wide band high gain patch [19,20].…”

Section: Introductionmentioning

confidence: 99%

Switchable Active Metasurface for Dual Band Gain Enhancement

Shaji¹,

Pradeep²

2022

PIER M

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A novel active metasurface which is switchable to accomplish dual band gain enhancement is reported. The metasurface is used as a superstrate above the dual band patch antenna working at 2.4 GHz and 4.6 GHz. The gain of the antenna is enhanced by 3.5 dB at both frequencies. Switching between the frequencies is enabled by a p-i-n diode. When the p-i-n diode is in the OFF state, gain is enhanced at 2.4 GHz, while gain is reduced at 4.6 GHz. When the p-i-n diode is in the ON state, gain is enhanced at 4.6 GHz, but reduced at 2.4 GHz. The diode is controlled by biasing with a regulated DC source. The efficiency of the antenna is 70% at 2.4 GHz and 85% at 4.6 GHz. The simulated and measured results show good agreement. The distance between the antenna and the superstrate is 6 mm, which is 0.048λ at 2.4 GHz and 0.092λ at 4.6 GHz. This superstrate can be used in WLAN and Sub-6 GHz 5G applications.

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High-Gain Fabry–Pérot Antenna With Reconfigurable Scattering Patterns Based on Varactor Diodes

Cited by 24 publications

References 29 publications

Smart Metasurface for Active and Passive Cooperative Manipulation of Electromagnetic Waves

Smart Metasurface for Active and Passive Cooperative Manipulation of Electromagnetic Waves

A 1‐bit reconfigurable metasurface antenna for ground penetrating radar application

Switchable Active Metasurface for Dual Band Gain Enhancement

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