A Monolithically BST-Integrated $K_{a}$ -Band Beamsteerable Reflectarray Antenna

Karnati, Kalyan K.; Trampler, Michael E.; Gong, Xun

doi:10.1109/tap.2016.2627007

Cited by 32 publications

(16 citation statements)

References 34 publications

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“…Several antenna types with electrical beam steering have been proposed. These include: integrated lens antennas [9], passive beam-forming networks like the Rotman lens [10], leaky wave antennas [11], reconfigurable reflectarrays [12], [13], and phased arrays [14]. The mentioned antennas have been studied extensively and only a limited number of the studies are referenced.…”

Section: Introductionmentioning

confidence: 99%

Waveguide-Based Phased Array With Integrated Element-Specific Electronics for 28 GHz

et al. 2019

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Scalable and beam-steerable phased antenna array prototype for the wireless backhaul communication is presented for the 28 GHz. The 16-element phased array consists of low-loss waveguide power division network, waveguide-to-PCB transitions, phase shifters on PCB, and horn antenna elements fed from the PCB. The paper presents a state-of-the-art design where the electronically controlled phase shifters are implemented on the PCB right in the immediate proximity of the radiating elements. Thus, the transmission losses are kept as low as possible, even though each element has their specific PCB-mounted electronics. The design is scalable so that element-specific parts on the PCB do not consume more area than the antenna element. Furthermore, novel matching steps with easy manufacturing are presented in the power division network. The simulated and measured results show good agreement. The measurement results show that the grating-lobe free beam-steering range is ±20 • in both azimuth and elevation. The measured antenna gain at broadside is 11.3 dBi after element phase adjustment, and the majority of the losses are due to the implemented electronics, i.e., the phase shifters.INDEX TERMS 5G, phased arrays, beam steering, phase shifters, power dividers, waveguide transitions.

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Section: Introductionmentioning

confidence: 99%

Waveguide-Based Phased Array With Integrated Element-Specific Electronics for 28 GHz

et al. 2019

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“…For high‐gain applications, reflectarray antennas, which have virtues of low‐cost consume, control phase independently, simplified feed network, and planar structure, have received increasing attention, whereas phased array antennas and parabola antennas were often used in the past years . As a result of the above‐mentioned advantages, fruitful reflectarray antennas are studied in recent years, such as beam‐scanning reflectarrays, multibeam reflectarrays, multiband reflectarrays, dual‐reflectarrays, resonator reflectarrays, conformal reflectarrays, and so on . Furthermore, reflectarrays are the one with a very high prospective for the fifth generation (5G) wireless communication system .…”

Section: Introductionmentioning

confidence: 99%

“…1 As a result of the above-mentioned advantages, fruitful reflectarray antennas are studied in recent years, such as beamscanning reflectarrays, multibeam reflectarrays, multiband reflectarrays, dual-reflectarrays, resonator reflectarrays, conformal reflectarrays, and so on. [2][3][4][5][6][7][8][9] Furthermore, reflectarrays are the one with a very high prospective for the fifth generation (5G) wireless communication system. 10,11 In the 5G communication system, wideband behavior is required due to the pursuit of higher data rates, which is supported by the fast switching mechanisms.…”

Section: Introductionmentioning

confidence: 99%

A single‐layer Ka‐band broadband reflectarray antenna using log‐periodic elements

Zhao

Wang

et al. 2019

Micro & Optical Tech Letters

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This letter presents a novel log‐periodic reflectarray element based on a single‐layer substrate. To achieve a full 360° phase coverage with a gentle slope, the corresponding parameters are optimized. For the sake of minimizing the effects of the feed blockage, the proposed element is used to construct a Ka‐band offset‐fed reflectarray antenna whose aperture size is 81 mm × 81 mm. Moreover, a corresponding prototype is also fabricated to test the actual radiation performance. The measured maximum gain is 26.65 dB at the center frequency of 33 GHz with the aperture efficiency of 46.34%. Moreover, the measured peak sidelobe for E‐plane is lower than −17.87 dB and 10.69% of 1‐dB gain bandwidth is also achieved, which demonstrates that the proposed antenna features the characteristic of broadband. The simulated and measured results show that the proposed antenna features good radiation performance, which has the potential for 5G communication systems.

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“…Accordingly, various studies have been performed on an active frequency-selective antenna to cover various application frequencies simultaneously. There is research of selectively using frequency by changing the size of the antenna mechanically [ 7 , 8 , 9 , 10 ], electronically frequency tunable antennas using semiconductor devices such as MEMS [ 11 , 12 ], and research of utilizing variations of material properties such as ferroelectric or ferrite [ 13 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Design Optimization of Reconfigurable Liquid Crystal Patch Antenna

Kim

et al. 2021

Materials

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In various fields such as the 5G antenna system and satellite communication system, there is a growing demand to develop a smart antenna with a frequency selective or beamforming function within a limited space. While antennas utilizing mechanical, electronic, and material characteristics are being studied, a method of having tunable frequency characteristics by applying a liquid crystal material with dielectric anisotropy to a planar patch antenna is proposed. In resonance mode, the design method for using only the minimum amount of expensive liquid crystals is systematically arranged while maximizing the amount of change in the operating frequency of the antenna by considering the electric field distribution on the surface of the patch antenna. Furthermore, to increase the dielectric anisotropy of the liquid crystal, the liquid crystal must be aligned. Simultaneously, in cases where the cell gap of the liquid crystal exceeds 100 μm, the alignment force is weakened. While compensating for this shortcoming, securing the radiation characteristics of the antenna is proposed, and simulations are performed.

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A Monolithically BST-Integrated $K_{a}$ -Band Beamsteerable Reflectarray Antenna

Cited by 32 publications

References 34 publications

Waveguide-Based Phased Array With Integrated Element-Specific Electronics for 28 GHz

Waveguide-Based Phased Array With Integrated Element-Specific Electronics for 28 GHz

A single‐layer Ka‐band broadband reflectarray antenna using log‐periodic elements

Design Optimization of Reconfigurable Liquid Crystal Patch Antenna

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