Yig Thin Film used to Miniaturize a Coplanar Junction Circulator

Zahwe, Oussama; Samad, B. Abdel; Sauviac, B.; Chatelon, Jean-Pierre; Mignon, M. F. Blanc; Rousseau, Jean Jacques; Berre, M. Le; Givord, D.

doi:10.1163/156939310790322073

Cited by 19 publications

(9 citation statements)

References 6 publications

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“…Also, it is worth mentioning that this ferrite phase shifter is based on dielectric resonances, and not on FMR. High power nonlinear losses are inherent to spin-wave devices [29,30]. Such losses are absent in our case and the phase shifter can handle very high RF power.…”

Section: Discussionmentioning

confidence: 89%

A Magnetic Field Tunable Yttrium Iron Garnet Millimeter-Wave Dielectric Phase Shifter: Theory and Experiment

Popov¹,

Zavislyak²,

Srinivasan³

2012

PIER C

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Abstract-A magnetically tunable passive narrow-band split-mode mm-wave phase shifter based on dielectric resonance in yttrium iron garnet (YIG) is investigated. The novelty here is the demonstration of a phase shifter in the frequency region between two split dielectric resonances in YIG. It is shown that, under certain conditions, the differential phase shift from the split modes add up, resulting in a larger phase shift than for a single mode phase shifter. Two prototype phase shifters operating in the U-and W-bands at frequencies much higher than ferromagnetic resonance (FMR) in YIG have been designed and characterized. Phase shifts up to 30 • with low losses and acceptable standing wave ratio are obtained for moderate bias magnetic fields. Equivalent transmission-line model taking into account coupling between the split resonances is presented and there is reasonable agreement between theory and experiment for both insertion loss and differential phase shift. Suggestions on further improvements of prototype filter characteristics have been outlined.

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Section: Discussionmentioning

confidence: 89%

A Magnetic Field Tunable Yttrium Iron Garnet Millimeter-Wave Dielectric Phase Shifter: Theory and Experiment

Popov¹,

Zavislyak²,

Srinivasan³

2012

PIER C

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“…Nonreciprocal devices are important components of the modern microwave systems [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. In order to obtain the nonreciprocal effects one needs to utilize the ferrite materials [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] or active elements such as amplifiers [19].…”

Section: Introductionmentioning

confidence: 99%

“…In order to obtain the nonreciprocal effects one needs to utilize the ferrite materials [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] or active elements such as amplifiers [19]. The integrated nonreciprocal devices are in general realized in microstrip [2][3][4][5][6][7][8][9][10][11][12] or slot line [15][16][17][18] technology, with the ferrite material magnetized longitudinally or transversely. Recently, the longitudinally magnetized microstrip [2][3][4][5][6][7][8][9][10][11] or slot [17,18] ferrite coupled lines (FCL) are being developed and employed to realize integrated nonreciprocal devices.…”

Section: Introductionmentioning

confidence: 99%

Study of Nonreciprocal Devices Using Three-Strip Ferrite Coupled Line

Marynowski¹,

Mazur²

2011

PIER

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Abstract-This paper presents the investigations of nonreciprocal devices employing a novel ferrite coupled line junction. The structure is designed using coplanar line technology with the ground half-planes reduced to the strips. The investigated junction is composed of one ferrite section placed in between of two dielectric sections. In the ferrite section the longitudinally magnetized ferrite slab is located at the top or the bottom of the strips and is covered with the dielectric layers. In the dielectric sections the ports of the junctions are located. The wave parameters and field distributions of the modes propagated in the dielectric and ferrite sections are obtained from spectral domain approach. In order to determine the scattering matrix of the junction the mode matching method is utilized. The investigation of the circulator and isolator designed based on the Smatrix of the junction are presented. The obtained results are verified by comparing them with HFSS simulations and own measurements of the fabricated devices. In both cases a very good agreement is observed.

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“…Nonreciprocal devices have been extensively used in modern microwave and millimeter systems [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. In order to obtain the nonreciprocal effects one needs to utilize the ferrite materials [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] or active elements such as amplifiers [16].…”

Section: Introductionmentioning

confidence: 99%

“…In order to obtain the nonreciprocal effects one needs to utilize the ferrite materials [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] or active elements such as amplifiers [16]. Recently, the longitudinally magnetized ferrite coupled strip- [2, 4-10, 15, 17, 18] or slotlines [14,19] are being developed and employed to realize integrated nonreciprocal devices.…”

Section: Introductionmentioning

confidence: 99%

Investigations of Cylindrical Ferrite Coupled Line Junction Using Hybrid Technique

Kusiek¹,

Marynowski²,

Mazur³

2011

PIER

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Abstract-In this paper, a novel longitudinally magnetized cylindrical ferrite coupled line (CFCL) junction is proposed. In comparison to planar ferrite coupled line (FCL) configurations, which are well known in literature, in such structure the higher gyromagnetic coupling occurs. This allows to obtain the required in FCL devices Faraday rotation angle π/4 for the ferrite with shorter length and lower value of magnetization. As a result the total insertion losses in the ferrite section can be reduced using the proposed topology. In the analysis of the proposed CFCL junction a hybrid technique combining method of moments and coupled mode method (MoM/CMM) is applied. The results are compared with the ones obtained from commercial software HFSS and a good agreement is obtained.

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Yig Thin Film used to Miniaturize a Coplanar Junction Circulator

Cited by 19 publications

References 6 publications

A Magnetic Field Tunable Yttrium Iron Garnet Millimeter-Wave Dielectric Phase Shifter: Theory and Experiment

A Magnetic Field Tunable Yttrium Iron Garnet Millimeter-Wave Dielectric Phase Shifter: Theory and Experiment

Study of Nonreciprocal Devices Using Three-Strip Ferrite Coupled Line

Investigations of Cylindrical Ferrite Coupled Line Junction Using Hybrid Technique

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