Ferrite rotary-field phase shifters with reduced cross-section

Boyd, C.R.; Oness, C.M.

doi:10.1109/mwsym.1990.99749

Cited by 13 publications

(7 citation statements)

References 3 publications

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“…The phase shift section comprises of a metallised ferrite rod and a ferrite yoke placed over this rod. Each of these elements involves design considerations and in-depth trade-offs for achieving an optimum phase shifter design using mathematical formulae [2][3][4] . Advanced softwares are also being used to design and simulate the passive RF devices.…”

Section: Virtual Prototyping and Development Of Rotary Field Ferrite mentioning

confidence: 99%

Virtual Prototyping and Development of Rotary Field Ferrite Phase Shifter

Aggarwal

Matheru

2016

Def. Sc. Jl.

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Review of the virtual prototyping and physical development of the rotary field ferrite phase shifter is presented. A description of the basic principle of operation of the rotary field ferrite phase shifter has been given along with the key aspects about the design and virtual prototyping of various parts of the phase shifter viz ferrite rod, yoke, polarisers and matching section using HFSS and 3-D Maxwell softwares. Calibrated simulation performance of the phase shifters is presented and it shows good agreement with physical measurement results. Three prototypes and one hundred production capable phase shifter modules were fabricated, functionally tested and RF characterised. This is an indigenous development of the physical prototypes of rotary field class of ferrite phase shifters of C-band. This class of ferrite phase shifters finds application in phased array radars, such as battery level radar and weapon locating radar, because of its high phase accuracy and high power handling capability.

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Section: Virtual Prototyping and Development Of Rotary Field Ferrite mentioning

confidence: 99%

Virtual Prototyping and Development of Rotary Field Ferrite Phase Shifter

Aggarwal

Matheru

2016

Def. Sc. Jl.

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“…Boyd [3] pointed out that periodical guide in which sections of high permittivity dielectric material alternate with ferrite sections, produces differential phase shift even when ferrite sections are below cutoff frequency. It allowed [4,5] to reduce diameter of circular waveguide used to build practical ferrite rotary-field phase shifters .…”

Section: Coupled Mode Modelmentioning

confidence: 99%

“…Although using ferrite transmission line model [1] and basing on the experimental experiences Boyd et al reviewed the principle of operation [2,3] and design relationship and construction of these devices [4,5], a satisfactory physical model describing clearly their operation properties has not been achieved yet. The purpose of this paper is an alternative approach using the coupled mode method [6] to the explanation of the operation principles of such ferrite structures.…”

Section: Introductionmentioning

confidence: 99%

“…It extends the coupled mode approach formulated in [7] where such problem was treated for saturated magnetized ferrite only. Our attention is focused on the novel configuration reported in [3][4][5] where the rotation of biased magnetic field pattern is controlled electronically. The bias yoke consists of two sets of coils, each generating four-pole magnetic field.…”

Section: Introductionmentioning

confidence: 99%

“…Thus a close relationship between the rotation angle and the transmission phase shift enables to use this structure as "half-wave plate" in Fox variable phase shifter [8] accordingly that for input circularly polarized wave the influence of the rotation angle on the polarization state of the output circularly polarized wave is not observed. It is worth to note that for this configuration the only approximate solutions have been reported [3,5]. Our procedure is to find simple and plausible coupled mode model of this ferrite guide.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Propagation in a Ferrite Circular Waveguide Magnetized Through a Rotary Four-Pole Magnetic Field

Mazur¹,

Sędek²,

Mazur³

2007

PIER

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Abstract-The coupled mode approach is applied to the ferrite circular waveguide magnetized through a rotary four-pole transverse bias magnetic fields. The plausible mathematical model of the ferrite waves propagation in the guide is developed which includes gyromagnetic interaction of two orthogonal TE 11 isotropic modes. The importance of the birefringence effect in determining of phase shift and polarization phenomena are thereby demonstrated. As a result basic design consideration of the circular polarizer applied as a "half-wave plate" in rotary-field phase shifter are provided.

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Average power capacity of rotary-field ferrite phase shifters

Hord

1992

IEEE Trans. Microwave Theory Techn.

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Ferrite rotary-field phase shifters with reduced cross-section

Cited by 13 publications

References 3 publications

Virtual Prototyping and Development of Rotary Field Ferrite Phase Shifter

Virtual Prototyping and Development of Rotary Field Ferrite Phase Shifter

Propagation in a Ferrite Circular Waveguide Magnetized Through a Rotary Four-Pole Magnetic Field

Average power capacity of rotary-field ferrite phase shifters

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