A Wideband 1 bit 12 × 12 Reconfigurable Beam-Scanning Reflectarray: Design, Fabrication, and Measurement

Han, Jiaqi; Li, Long; Liu, Guangyao; Wu, Zhao; Shi, Yan

doi:10.1109/lawp.2019.2914399

Cited by 140 publications

(73 citation statements)

References 13 publications

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“…Recently, reconfigurable reflectarray antennas (RRAs) with various functions have been widely used due to they combine the features of reflectors and phased arrays [4]- [14]. The beam-scanning characteristics can be achieved by mechanically [4]- [7] or electronically [8]- [14] controlling phased responses of each element in RRA.…”

Section: Introductionmentioning

confidence: 99%

1-Bit Wideband Reconfigurable Reflectarray Design in Ku-Band

Zhu

et al. 2022

IEEE Access

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In this paper, a 1-bit wideband electronically reconfigurable reflectarray (RRA) in Ku-band is proposed. In order to achieve the wideband and reconfigurable characteristics, the stacked microstrip structure and a 1-bit "microstrip line-slot line-microstrip line" phase shifter (MSMPS) were introduced in this design. A novel "receiving-phase shift-transmitting" unit cell was gotten by connecting two stacked microstrip structures using MSMPS. Due to the receiving and transmitting parts are perpendicular to each other, the polarization rotation characteristic was demonstrated. To avoid the blockage of the feed horn, it was placed above the reflecting surface array with an offset angle of 25° to the normal direction. A 16 × 16 obliquely-fed RRA was designed and fabricated. The measured 1-dB gain bandwidth of the RRA is 15.4%. The measured results show that the fabricated prototype can achieve beam scanning from -20° to 50° in the elevation plane, and ±50° beam scanning in the azimuth plane.

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Section: Introductionmentioning

confidence: 99%

1-Bit Wideband Reconfigurable Reflectarray Design in Ku-Band

Zhu

et al. 2022

IEEE Access

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“…The reduction in Q is justified due to the very high tunability of the varactor diode capacitance value with a high TC parameter. In addition, using the quantization reflection phase method compared to the continuous reflection phase method adds quantization losses for beam steering of about 4 dB for 1-bit digital coding MS and about 1 dB for 2-bit digital coding MS [32,33]. Thus, considering the total losses budget for a beam-steering application, using the varactor diode seems better, but additional research is required.…”

Section: Introductionmentioning

confidence: 99%

Ultra-Wideband Reconfigurable X-Band and Ku-Band Metasurface Beam-Steerable Reflector for Satellite Communications

Rotshild

Abramovich

2021

Electronics

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A continuously reconfigurable metasurface reflector based on unit cell mushroom geometry that was integrated with a varactor diode is presented in this paper. The unit cell of the metasurface was designed and optimized to operate in the X-band and Ku-band, improving satellite communication’s quality of service. The losses mechanisms of continuous control over the unit cell phase reflection in beam steering resolution are considered and the analysis results are presented. The unit cell design parameters were analyzed with an emphasis on losses and dynamic reflection phase range. The unit cell magnitude and phase reflection are shown in the wide frequency bandwidth and showed a good agreement between all the measurements and the simulations. This metasurface enabled a high dynamic range in the unit cell resonant frequency range from 7.8 to 15 GHz. In addition, the reflection phase and absorption calibration are demonstrated for multiple operating frequencies, namely, 11 GHz, 12 GHz, and 13.5 GHz. Furthermore, design trade-offs and manufacturing limitations were considered. Finally, a beam-steering simulation using the designed metasurface is shown and discussed.

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“…On the other hand, reflectarray antennas possess most of the main advantages of conventional phased arrays with the benefits of reduced losses, low complexity, and relatively low cost [1]. Recently, reconfigurable reflectarrays have become attractive due to their ability to perform dynamical reconfiguration of the radiation pattern, multibeam scanning, and multi-band operation [2][3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%