Ku-Band Rectangular Waveguide Wide Side Dimension Adjustable Phase Shifter

Yang, Yiming; Yuan, Chengwei; Cheng, Guoxin; Qian, Baoliang

doi:10.1109/tps.2014.2370074

Cited by 17 publications

(9 citation statements)

References 7 publications

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“…В настоящее время широкое применение получили волноводные поляризаторы [57,58], которые используются в современных радиолокационных и спутниковых системах, некоторые из которых применяются в современных системах 5G [59,60]. Кроме того, широкое применение получили и фазовращатели [61][62][63][64][65][66], которые применются в качестве поляризаторов. Часто фазовращатели применяются в качестве основных частей фазированных антенных решеток в технологии интегрированных в подложку волноводов.…”

Section: Introductionunclassified

“…Необходимый фазовый сдвиг обеспечивается за счет регулирования длины этих штырей. В [62] была предложена конструкция фазовращателя в волноводе на частоте 15.2 ГГц, который может осуществлять регулировку фазы в диапазоне от 0 до 360°. Эффективность передачи сильно зависит от зазора между регулируемой металлической пластинкой и волноводом.…”

Section: Introductionunclassified

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Estimation of Fem and FDTD Methods for Simulation of Electromagnetic Characteristics of Polarization Transforming Devices With Diaphragms

Piltyay¹,

Bulashenko²,

Bykovskyi³

et al. 2022

RIC

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Context. Today, there is a rapid expansion of the range of modern branches of science and technology, which actively use satellite telecommunication systems to receive, process and transmit various information. These radioelectronic systems quite often require an increase of the volumes of information, which they are processing and transmitting. Increase of the volumes of transmitted information in two times can be achieved by using dual-polarization antenna systems and devices. Nowadays, most part of the specialists, who are engaged in the development of various modern polarization-processing microwave devices, carry out their numerical modeling and optimization using variational techniques, methods of integral equations, method of fields matching in partial regions. The methods with division of the internal region of the device into elementary cells are applied most actively. Among them in the time domain the most often used approach is finite difference method with the decomposition at hexagonal mesh, while and in the frequency domain the finite elements method with the adaptive tetrahedral mesh is applied. Therefore, the estimation of the speed and accuracy of these methods with the purpose of determination of more effective among them is a relevant problem. Objective. The goal of the research is comparison of speed and accuracy of the calculations of electromagnetic characteristics of waveguide polarizers using FEM and FDTD methods, as well as the comparison of the convergence of these methods for the analysis of polarization-processing microwave devices with diaphragms. Method. For the calculations and analysis of electromagnetic characteristics in the article we used the method of finite differences in the time domain (FDTD) and the method of finite elements in the frequency domain (FEM). In FEM the volume is split into the tetrahedral mesh cells. In FDTD the computational domain is divided into hexagonal mesh cells. Results. It was found that the convergence of voltage standing wave ratio for the waveguide polarizer is fast for both methods. It was obtained that the convergence of the characteristics of differential phase shift, axial ratio, and crosspolar discrimination of the developed microwave device turned out to be much more sensitive to the number of mesh cells used. Moreover, in the research it was obtained by calculations that the computation time by the finite elements method in the frequency domain is more than 2 times less than the corresponding time required for calculations by the finite difference time domain method. When using the finite elements method in the frequency domain the corresponding number of tetrahedral mesh cells is 10 times less than the number of hexagonal mesh cells, which are used in the finite difference time domain method. Conclusions. Performed investigations have shown that FEM in the frequency domain, which applies an adaptive tetrahedral mesh, is more efficient than the FDTD method for the calculations of phase and polarization characteristics of modern waveguide polarizers and other microwave devices for various applications.

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Section: Introductionunclassified

Estimation of Fem and FDTD Methods for Simulation of Electromagnetic Characteristics of Polarization Transforming Devices With Diaphragms

Piltyay¹,

Bulashenko²,

Bykovskyi³

et al. 2022

RIC

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show abstract

“…In both designs, short waveguide couplers with mechanical reconfigurable elements at the output ports have been used to achieve the desired phase shift in reflection. Another solution in waveguide technology is presented in [4], where the wide Manuscript submitted February X, 2020. This work was supported in part by the Spanish Research and Development National Program under Projects TIN2016-75097-P, B-TIC-402-UGR18, RTI2018-102002-A-I00 and the predoctoral grant FPU18/01965.…”

Section: Introductionmentioning

confidence: 99%

Low-Loss Reconfigurable Phase Shifter in Gap-Waveguide Technology for mm-Wave Applications

Palomares‐Caballero

Alex‐Amor

Escobedo

et al. 2020

IEEE Trans. Circuits Syst. II

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In this brief, we present a low-loss mechanically reconfigurable phase shifter implemented in gap-waveguide technology for mm-wave frequencies. The proposed design gives a practical implementation of tuning elements inside the waveguide providing alternatives to the use of the E-plane split waveguide at high frequencies in order to avoid leakage losses. The depicted phase shifter design is based on a H-plane split waveguide. The phase shift is controlled by means of a tuning screw, which exerts pressure on a flexible metallic strip inserted inside the waveguide. The flexible strip bends with different curvature radii and determines the phase shift at the output port. Costeffective manufacturing and simple implementation of the flexible metallic strip are achieved by means of the gap-waveguide design. A prototype has been manufactured for validation purposes. Good impedance matching is achieved from 64 GHz to 75 GHz providing a 15.8% impedance bandwidth. The results show a maximum phase shift of 250 o with a maximum and mean insertion loss (IL) of 3 dB and 1.7 dB, respectively.

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“…In both designs, short waveguide couplers with mechanical reconfigurable elements at the output ports have been used to achieve the desired phase shift in reflection. Another solution in waveguide technology is presented in [4], where the wide side of the waveguide is adjustable to achieve the desired phase shift at the output port of the waveguide. Similarly, [5] shows a reconfigurable phase shifter based on a piezoelectric actuator, where the side wall of the waveguide is in this case a perfect magnetic conductor (PMC).…”

Section: Introductionmentioning

confidence: 99%

Low-Loss Reconfigurable Phase Shifter in Gap-Waveguide Technology for mm-Wave Applications

Palomares-Caballero,

Alex-Amor,

Escobedo

et al. 2020

Preprint

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In this paper, we present a low-loss mechanically reconfigurable phase shifter implemented in gap-waveguide technology for mm-wave frequencies. The proposed design gives a practical implementation of tuning elements inside the waveguide providing alternatives to the use of the E-plane split waveguide at high frequencies in order to avoid leakage losses. The depicted phase shifter design is based on a H-plane split waveguide. The phase shift is controlled by means of a tuning screw, which exerts pressure on a flexible metallic strip inserted inside the waveguide. The flexible strip bends with different curvature radii and determines the phase shift at the output port. Cost-effective manufacturing and simple implementation of the flexible metallic strip are achieved by means of the gap-waveguide design. A prototype has been manufactured for validation purposes. Good impedance matching is achieved from 64 GHz to 75 GHz providing a 15.8% impedance bandwidth. The results show a maximum phase shift of 250 o with a maximum and mean insertion loss of 3 dB and 1.7 dB, respectively.

show abstract

Ku-Band Rectangular Waveguide Wide Side Dimension Adjustable Phase Shifter

Cited by 17 publications

References 7 publications

Estimation of Fem and FDTD Methods for Simulation of Electromagnetic Characteristics of Polarization Transforming Devices With Diaphragms

Estimation of Fem and FDTD Methods for Simulation of Electromagnetic Characteristics of Polarization Transforming Devices With Diaphragms

Low-Loss Reconfigurable Phase Shifter in Gap-Waveguide Technology for mm-Wave Applications

Low-Loss Reconfigurable Phase Shifter in Gap-Waveguide Technology for mm-Wave Applications

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