A New Dual-Band High Power Ferrite Circulator

Razavipour, Hadi; Safian, Reza; Askari, Gholamreza; Fesharaki, Faezeh; Sadeghi, Hamid Mirmohammad

doi:10.2528/pierc09050504

Cited by 5 publications

(3 citation statements)

References 4 publications

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“…In this design, the frequency response was extended to 2.1 GHz, and the insertion loss and isolation are reported as 6, and 18 dB, respectively. In [4], employing line-unified FETs (LUFETs) has been proposed, which can operate over a wide frequency range (1)(2)(3)(4)(5)(6)(7)(8)(9)(10). This circuit consists of an active outof-phase divider and an active in-phase combiner.…”

Section: Introductionmentioning

confidence: 99%

“…But using ferrite materials make them expensive; also they are not compatible with monolithic integration [1]. The most important specifications of active circulator and quasi circulator are their inherent advantages such as size, weight and cost over conventional ferrite devices [2][3][4][5][6][7][8]. Active circulator and quasi circulator are also highly compatible with monolithic technology and are being used as part of complete microwave transmit receive frontends.…”

Section: Introductionmentioning

confidence: 99%

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Analysis and Design of New Active Quasi Circulator and Circulators

Bahri¹,

Abdipour²,

Moradi³

2009

PIER

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Abstract-This paper introduces two new type active quasi circulators and three new type active circulators which use the outof-phase power divider/combiner, symmetric/anti-symmetric couplers and generic unilateral amplifiers.The proposed circuits are full-symmetric and composed of conventional microwave devices. Analytical relations for active quasi circulator modules are described. These modules have many variations and can be used for very wide frequency range depending on the type of the employed unilateral amplifier, power divider/combiner and symmetric/anti-symmetric couplers. Based on the proposed configurations, analysis and design of n-port active circulators are presented. Also they can be used in MMICs as active quasi circulators, active circulators and in other high frequency applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis and Design of New Active Quasi Circulator and Circulators

Bahri¹,

Abdipour²,

Moradi³

2009

PIER

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“…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.…”

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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Magnetically tunable substrate integrated waveguide bandpass filters employing ferrites

Almalkawi

Devabhaktuni

2011

2011 International Conference on Infrared, Millimeter, and Terahertz Waves

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A New Dual-Band High Power Ferrite Circulator

Cited by 5 publications

References 4 publications

Analysis and Design of New Active Quasi Circulator and Circulators

Analysis and Design of New Active Quasi Circulator and Circulators

Study of Nonreciprocal Devices Using Three-Strip Ferrite Coupled Line

Magnetically tunable substrate integrated waveguide bandpass filters employing ferrites

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