Reconfigurable Bidirectional Beam-Steering Aperture With Transmitarray, Reflectarray, and Transmit-Reflect-Array Modes Switching

Yu, Hang; Li, Pan; Su, Jianxun; Li, Zengrui; Xu, Shenheng; Yang, Fan

doi:10.1109/tap.2022.3222337

Cited by 42 publications

(12 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To suppress the generation of the grating lobe, the spatial harmonics β −1, − and β −1, + with a = −1 should be smaller than −k 0 . According to equation (13), it can be known that β −1, + > β −1, − . Thus, the condition which does not generate grating lobe is expressed as,…”

Section: Influence Of Elements Spacing On the Steering Range Without ...mentioning

confidence: 99%

“…The phased array antennas that adhere to the traditional design exhibit beam-steering capabilities, but a greater number of integrated phase shifters results in increased size and costs [7]. Compared to traditional phased antennas, reconfigurable reflect and transmit arrays offer significant low-cost and compact advantages compared to traditional phased antennas; however, their large volumes restrict their applications [8][9][10][11][12][13][14][15][16]. Thus, the phase arrays with compacted and low-cost performances are critical requirements in the communication domain.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A 1-bit phase reconfigurable fixed-frequency wide-angle steering leaky-wave antenna

Han,

Meng,

Wang

et al. 2023

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

A 1-bit phase reconfigurable fixed-frequency beam steering leaky-wave antenna (FBSLWA) with wide-angle steering is proposed in this paper. By controlling two p-i-n diodes on the branches of the element, a stable 180° phase difference is realized. Moreover, the open stop-band effect at the broadside radiation is suppressed by reducing the reflection coefficients of the element. The proposed FBSLWA can achieve wide-angle steering within a frequency bandwidth of 10.4 GHz to 11.8 GHz. As for the measured results, they show that the achievable beam steering ranges of the FBSLWA at 10.4 GHz, 11.0 GHz, and 11.8 GHz are -61° to +59°, -64° to +71°, and -62° to +58° respectively, with measured peak gains of 12.1 dBi, 13.9 dBi, and 11.7 dBi.

show abstract

Section: Influence Of Elements Spacing On the Steering Range Without ...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A 1-bit phase reconfigurable fixed-frequency wide-angle steering leaky-wave antenna

Han,

Meng,

Wang

et al. 2023

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

show abstract

“…Although various new applications have been developed, programmable metasurfaces studied so far are mostly focusing on the manipulation of single linearly polarized (LP) electromagnetic wave. − As one of the fundamental properties of electromagnetic waves, polarization plays a key role in many physical phenomena and applications. To improve the multitasking capability, and implement more complicated and attractive functions of the programmable metasurfaces, many efforts have been devoted to designing metasurfaces with the ability to manipulate different polarizations. − For example, an active anisotropic metasurface loaded with voltage-controlled varactors was reported to enable the wavefront control of two orthogonal-LP electromagnetic waves .…”

Section: Introductionmentioning

confidence: 99%

Single-Layer Programmable Metasurface for Manipulating Both Linearly and Circularly Polarized Electromagnetic Waves

Tian,

Shi,

et al. 2024

ACS Appl. Opt. Mater.

View full text Add to dashboard Cite

Programmable metasurfaces provide an innovative scenario to carry out promising control of electromagnetic waves. However, most works focus on the manipulation of only linearly polarized (LP) or circularly polarized (CP) waves, and multilayer configurations are typically desired due to the existence of direct current biasing networks. Here, a general strategy for designing programmable metasurfaces for the manipulation of both LP and CP waves is proposed and verified. As a result, the real-time programmable manipulation of quad-LP (x-polarized, y-polarized, upolarized, v-polarized) and dual-CP (right-hand, left-hand) waves could be achieved. Moreover, by placing both the direct current biasing network and the finely designed isolation circuit on top of the metasurface, only a single dielectric layer is required for such a programmable metasurface. As an example, a single-layer programmable metasurface consisting of 16 × 16 meta-atoms is designed, fabricated, and measured. The PIN diodes incorporated into each meta-atom are used as active components to provide a 1-bit reflective phase control. By shifting the working states of each PIN diode in the meta-atom, wide-angle beam scanning can be obtained. Both the simulated and measured results verify the capacity of the proposed strategy and demonstrate that the designed single-layer programmable metasurface exhibits stable beam scanning for both LP and CP waves, enabling promising applications in future wireless communications.

show abstract

“…At terahertz frequencies several challenges exist in integration of varactor devices. At lower frequencies in the microwave range, PIN diodes and varactor diodes are used to control reflection phase of each element in a RIS by changing the electric and magnetic properties of the unit cells [20,21]. However, at THz frequencies, they become extremely lossy.…”

Section: Introductionmentioning

confidence: 99%

Beam-steering of THz MIMO Antenna using Graphene-based Intelligent Reflective Surface

Das¹

2023

Preprint

View full text Add to dashboard Cite

In this work, beam-steering in THz MIMO antennas has been demonstrated using two different types of graphene-based intelligent reflective surface (IRS). Equivalent circuit models of IRS unit cells have been proposed for demonstrating their reflection characteristics. Two types of microstrip patch-based THz MIMO in side-by-side configuration and orthogonal configuration have been designed. Band-stop FSS has been employed to reduce the mutual coupling of MIMO antennas which are arranged in side-by-side configuration. The MIMO antennas have been integrated with graphene-based IRS for simultaneous steering of four beams radiated by the antenna elements. The reflectivity of the IRS relies on the conductivity of graphene which can be modified by changing its bias voltage. A digital 1-bit coded metasurface has been designed using graphene-based intelligent reflective surface (IRS). By varying the bias voltage on the graphene-based unit cells, the pattern of the digital code is modified on the IRS, which causes beam-steering of MIMO antennas placed above it. Gain improvement of 4 dB takes place when the IRS behaves as an AMC for the MIMO in linear configuration. Maximum gain improvement of 9 dB is obtained for the IRS integrated MIMO in orthogonal configuration. Numerical simulations using finite integration technique have been performed for illustrating the rotation of beam in MIMO antennas.

show abstract

Reconfigurable Bidirectional Beam-Steering Aperture With Transmitarray, Reflectarray, and Transmit-Reflect-Array Modes Switching

Cited by 42 publications

References 36 publications

A 1-bit phase reconfigurable fixed-frequency wide-angle steering leaky-wave antenna

A 1-bit phase reconfigurable fixed-frequency wide-angle steering leaky-wave antenna

Single-Layer Programmable Metasurface for Manipulating Both Linearly and Circularly Polarized Electromagnetic Waves

Beam-steering of THz MIMO Antenna using Graphene-based Intelligent Reflective Surface

Contact Info

Product

Resources

About