Ferrite-Tuned Resonant Cavities

Fay, C.E.

doi:10.1109/jrproc.1956.274989

Cited by 28 publications

(9 citation statements)

References 2 publications

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“…From mid-1950's, ferrite materials have drawn considerable interest in the realization of tunable devices including tunable cavities, filters and frequency modulated signals [50,51]. It can be observed that in both works presented in [50] and [51], rectangular waveguide technology is used to realize the desired tunable devices.…”

Section: Tunable Filters Using Ferromagnetic Materialsmentioning

confidence: 99%

“…It can be observed that in both works presented in [50] and [51], rectangular waveguide technology is used to realize the desired tunable devices. The higher power handling capabilities, lower loss, and more convenient of biasing ferrites could have been few of the reasons why rectangular waveguide technology would have been used.…”

Section: Tunable Filters Using Ferromagnetic Materialsmentioning

confidence: 99%

“…In [51], a magnetically tunable cavity resonator based on rectangular waveguide technology was described. The tunability is achieved by placing a slab of YIG along one sidewall of the rectangular waveguide where the magnetic field component of TE 101 mode is dominant.…”

Section: Tunable Filters Using Ferromagnetic Materialsmentioning

confidence: 99%

“…By the application of an external DC magnetic bias, the resonant frequency of the cavity is tuned towards higher frequency. The magnetically tunable cavity resonator presented in [51] makes use of a block YIG slab to achieve the desired tunability. Since the ferrite blocks are usually made of a polycrystalline material therefore they suffer from losses when used in microwave and millimeter wave regions.…”

Section: Tunable Filters Using Ferromagnetic Materialsmentioning

confidence: 99%

“…Structure of a planar tunable filter using ferromagnetic disks. (a) Filter structure, (b) frequency response [51]. (a) (b) Figure 15.…”

Section: Tunable Filters Using Ferromagnetic Materialsmentioning

confidence: 99%

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Developing One-Dimensional Electronically Tunable Microwave and Millimeter-Wave Components and Devices Towards Two-Dimensional Electromagnetically Reconfigurable Platform

Adhikari

Wu²

2013

PIER

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Abstract-An overview of state-of-the-art frequency tunable technologies in the realization of tunable radio frequency (RF) and microwave tunable circuits is presented with focus on filter designs. Those enabling techniques and materials include semiconductors, microelectro-mechanical systems (MEMS), ferroelectric and ferromagnetic materials. Various performance indicators of one-dimensional tunable filters are addressed in terms of tunability, losses, signal integrity and other aspects. Fundamental limitations of the classical one-dimensional tuning method are discussed, which makes use of only one type of tunable elements such as either electric or magnetic tuning/controlling of circuit parameters. Requirements of simultaneous electric and magnetic two-dimensional tuning techniques are highlighted for achieving an unprecedented and advantageous wider modal tuning. It is believed that this emerging scheme will lead its way in the realization of future highly efficient and tunable RF and microwave components and devices.

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Section: Tunable Filters Using Ferromagnetic Materialsmentioning

confidence: 99%

Section: Tunable Filters Using Ferromagnetic Materialsmentioning

confidence: 99%

Section: Tunable Filters Using Ferromagnetic Materialsmentioning

confidence: 99%

Section: Tunable Filters Using Ferromagnetic Materialsmentioning

confidence: 99%

“…Structure of a planar tunable filter using ferromagnetic disks. (a) Filter structure, (b) frequency response [51]. (a) (b) Figure 15.…”

Section: Tunable Filters Using Ferromagnetic Materialsmentioning

confidence: 99%

See 3 more Smart Citations

Developing One-Dimensional Electronically Tunable Microwave and Millimeter-Wave Components and Devices Towards Two-Dimensional Electromagnetically Reconfigurable Platform

Adhikari

Wu²

2013

PIER

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Realizing frequency reconfigurable antenna by ferrite-loaded half-mode SIW

Lou

Meng

et al. 2017

Microw. Opt. Technol. Lett.

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We propose and experimentally demonstrate a frequency reconfigurable antenna using ferrite loaded half‐mode substrate integrated waveguide (SIW). The antenna design is based on a SIW cavity with an embedded ferrite slab, which causes the resonant frequency of the cavity tunable under bias magnetic field. The antenna features omni‐direction radiation and small size. A prototype antenna is designed and fabricated. The measurements show the tunable frequency bandwidth is over 11% covering frequencies 5.04–5.62 GHz in low bias magnetic field region, and 5% covering 4.28–4.5 GHz in high bias magnetic field region. The measurement is in good agreement with simulations. The gain of antenna is all over 1.6 dBi, and the frequency reconfiguration does not affect the radiation pattern of the antenna, providing a preferable feature for frequency reconfigurable antenna. This type of antenna may be a good candidate for practical applications such as base stations and satellites. © 2017 Wiley Periodicals, Inc. Microwave Opt Technol Lett 59:1365–1371, 2017

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General Mode Structure and Resonant Frequencies for Ferrite‐Loaded Circularly Cylindrical Cavity Resonators

Bolle

1967

Radio Science

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Ferrite-Tuned Resonant Cavities

Cited by 28 publications

References 2 publications

Developing One-Dimensional Electronically Tunable Microwave and Millimeter-Wave Components and Devices Towards Two-Dimensional Electromagnetically Reconfigurable Platform

Developing One-Dimensional Electronically Tunable Microwave and Millimeter-Wave Components and Devices Towards Two-Dimensional Electromagnetically Reconfigurable Platform

Realizing frequency reconfigurable antenna by ferrite-loaded half-mode SIW

General Mode Structure and Resonant Frequencies for Ferrite‐Loaded Circularly Cylindrical Cavity Resonators

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