Variable toroidal ferrite phase shifter

Abuelmaatti, Ali; Zafar, Junaid; Khairuddin, I.; Gibson, Arthur; Haigh, Arthur; Morgan, I.

doi:10.1049/iet-map:20080046

Cited by 5 publications

(2 citation statements)

References 31 publications

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“…Generally, conventional ferrite materials have been extensively used for implementing tunable phase shifters in planar transmission-line (microstrip, CPW, etc) [7]- [10] as well as non-planar waveguide configurations [11]. But even though it has been over a decade since the invention of SIWs, only very few ferrite-based SIW phase shifters have been reported [12], [13] and these have not been demonstrated in any kind of phased array system.…”

Section: Introductionmentioning

confidence: 99%

A Ferrite LTCC-Based Monolithic SIW Phased Antenna Array

Nafe

Ghaffar

Farooqui

et al. 2017

IEEE Trans. Antennas Propagat.

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Section: Introductionmentioning

confidence: 99%

A Ferrite LTCC-Based Monolithic SIW Phased Antenna Array

Nafe

Ghaffar

Farooqui

et al. 2017

IEEE Trans. Antennas Propagat.

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“…1). The present study might be used for a preliminary analysis of multipactor phenomenon in the aforementioned devices containing ferrite, specially, some kind of isolators (resonance isolator) and phase shifters (nonreciprocal latching phase shifters) [18]- [20]. The paper is organized as follows.…”

Section: Introductionmentioning

confidence: 99%

Multipactor Effect in a Parallel-Plate Waveguide Partially Filled With Magnetized Ferrite

Gonzalez-Iglesias

Gimeno

Boria

et al. 2014

IEEE Trans. Electron Devices

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Gimeno Martinez, B.; Boria Esbert, VE.; Gómez, Á.; Vegas, Á. (2014). Multipactor effect in a parallel-plate waveguide partially filled with magnetized ferrite. IEEE Transactions on Electron Devices. 61(7):Abstract-The aim of this paper is the analysis of the multipactor effect in a parallel-plate waveguide when a ferrite slab, transversally magnetized by a static magnetic field parallel to the waveguide walls, is present. Employing an in-house developed code, numerical simulations are performed in order to predict the multipactor RF voltage threshold in such a ferrite-loaded waveguide. Variations of the ferrite magnetization field strength and the ferrite slab height are analyzed. Effective electron trajectories are also shown for a better understanding of the breakdown phenomenon, finding different multipactor regimes.Index Terms-Multipactor effect, RF breakdown, parallelplate waveguide, ferrite components.

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High-power waveguide phase shifters for phased array applications

Zhang

Zhao

Yuan

et al. 2020

Review of Scientific Instruments

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Two kinds of high-power waveguide phase shifters targeting the application of phased arrays are proposed in this paper. To enhance the power handling capacity, both linear phase shifters are designed to be mechanically tunable without the introduction of a dielectric and a semiconductor. For the waveguide-inserting-fin phase shifter, the phase shifting function is achieved by adjusting the length of the inserting metal fin. As for the narrow-side slot-waveguide phase shifter, the regulation of the position of the metal choke plunger placed at the end of the 3-dB power divider is used to adjust the output phase. The simulation results show that both phase shifters can realize 2π phase shift, and the transmission efficiencies are over 99% at the central frequency of 9.5 GHz. Meantime, the power handling capacity of the designed shifters is expected to be over 100 MW, which can be applied in the high-power microwave region. The slot-waveguide phase shifter is fabricated and tested along with the slotted array antenna. The experimental results coincide well with the simulations, which demonstrates the feasibility and the power capacity of the designed shifter.

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Variable toroidal ferrite phase shifter

Cited by 5 publications

References 31 publications

A Ferrite LTCC-Based Monolithic SIW Phased Antenna Array

A Ferrite LTCC-Based Monolithic SIW Phased Antenna Array

Multipactor Effect in a Parallel-Plate Waveguide Partially Filled With Magnetized Ferrite

High-power waveguide phase shifters for phased array applications

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