New classes of microstrip resonators for HTS microwave filters applications

Rouchaud, F.; Madrangeas, Valérie; Aubourg, Michel; Guillon, P.; Théron, B.; Maignan, M.

doi:10.1109/mwsym.1998.705167

Cited by 18 publications

(11 citation statements)

References 6 publications

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“…7. The coupling coefficient (K) between dual modes is calculated using Equation (1) as described in [13].…”

Section: Dual-mode Star Shaped Resonatormentioning

confidence: 99%

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Compact Dual-Mode Microstrip Bandpass Filters With Transmission Zeros Using Modified Star Shaped Resonator

Rao¹

2017

PIER C

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Abstract-A modified star-shaped dual-mode microstrip loop resonator with a triangular patch is proposed to design compact narrow band bandpass filters with transmission zeros. The triangular patch is used as perturbation element to couple degenerated modes. The position of transmission zeros can be tuned by varying the size and location of the perturbation element. The coupling mechanism (inductive or capacitive) and the type of input/output feed (orthogonal or non-orthogonal) determine the type of filter response like symmetric or asymmetric. Three highly selective two-pole narrow band bandpass filters are designed using a modified star-shaped resonator with tunable transmission zeros. First, two filters with non-orthogonal feed lines have an asymmetric response with transmission zeros on one side of the passband, whereas the third filter with orthogonal feed lines exhibits symmetric frequency response with transmission zeros on both sides of the passband. Even and odd mode analysis is applied to the dual-mode filters to calculate the position of transmission zeros. Filters are realized using a low loss dielectric substrate, and measured results are in good agreement with the theoretical and simulated ones.

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“…7. The coupling coefficient (K) between dual modes is calculated using Equation (1) as described in [13].…”

Section: Dual-mode Star Shaped Resonatormentioning

confidence: 99%

“…The selection of orthogonal [11][12][13][14] and non-orthogonal [15][16][17][18] feed lines used in the design of filters influences the frequency response. A small triangular patch is used as a perturbation element to couple degenerated modes.…”

Section: Introductionmentioning

confidence: 99%

Compact Dual-Mode Microstrip Bandpass Filters With Transmission Zeros Using Modified Star Shaped Resonator

Rao¹

2017

PIER C

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“…The coupling coefficient between the split in the resonance frequency of two degenerate modes is described by [5] the following:…”

Section: The Analysis Of the Degenerate Modes And Dual-mode Filters Dmentioning

confidence: 99%

Compact dual‐mode microstrip bandpass filter with adjustable transmission zero

Zhang

Wang

et al. 2009

Micro & Optical Tech Letters

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“…A cross open-loop resonator [2], which gives the possibility of designing compact structures by limiting the undesired couplings between nonadjacent resonators [3], is chosen to build the eight-pole microstrip filter (Fig. 3).…”

Section: Filter Designmentioning

confidence: 99%

Novel superconductive self-equalized planar filter configuration for C-band input multiplexers

Seaux

Courrèges

Bila

et al. 2007

Int J RF and Microwave Comp Aid Eng

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The objective of this paper is to present the synthesis, the design, and the measured results of an eight-pole self-equalized quasi-elliptic superconductive planar filter for a satellite input multiplexer. These filters placed at the entry of the amplifying channels allow to select a part of the total band. They are narrow-band filters (< <1.7%) around 4 GHz with a high selectivity in order to optimize the exploitation useful band. A new design is developed using cross-loop resonators and a square patch, to annihilate the undesired couplings between the various elements.

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New classes of microstrip resonators for HTS microwave filters applications

Cited by 18 publications

References 6 publications

Compact Dual-Mode Microstrip Bandpass Filters With Transmission Zeros Using Modified Star Shaped Resonator

Compact Dual-Mode Microstrip Bandpass Filters With Transmission Zeros Using Modified Star Shaped Resonator

Compact dual‐mode microstrip bandpass filter with adjustable transmission zero

Novel superconductive self-equalized planar filter configuration for C-band input multiplexers

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