Miniaturization of wide-band VHF filters by using spiral resonators

Inui, O.; Nagai, J.

doi:10.1109/proc.1979.11197

Cited by 2 publications

(1 citation statement)

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“…Various sub‐wavelength resonators have been explored with the ratio between the largest dimensions of the device to their free space wavelengths less than 1/10 . One popular choice is to use spiral‐shaped resonators due to the fact that spiral‐shaped topology can achieve exceptional performance with a much smaller electrical length than that of other sub‐wavelength topologies . Capacitive loading capability can also be easily integrated into spiral‐shaped resonators by modifying the spiral topology or coupling with other unit cells, but this always requires increasing the circuit size .…”

Section: Introductionmentioning

confidence: 99%

A novel capacitive loaded structure for miniaturized resonators

Yue

Subramanyam

Cerny

2016

Micro & Optical Tech Letters

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Miniaturized resonators are designed with variable capacitive loading capability by utilizing both sides of the substrates with Printed Circuit Board technology. The proposed design integrates a spiral‐shaped sub‐wavelength inductive element with a parallel plate resonant structure of three variations to achieve notch depths of 37, 39, and 48 dB at 94, 138, and 116 MHz respectively within an area of 6.1 by 9.65 cm2 with reduced insertion losses and narrowed bandwidths. The ratio between the largest dimensions of structure to their guided wavelengths at resonance are all <0.05, demonstrating exceptional compactness of the design without sacrificing the performance of band‐rejection behavior. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2554–2557, 2016

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Section: Introductionmentioning

confidence: 99%