Coupling factors of irregular microstrip quarter-wave resonators

Belyaev, B. A.; Сержантов, А. М.

doi:10.1109/crmico.2002.1137294

Cited by 4 publications

(16 citation statements)

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“…In Figure , the coupling coefficients of the first pass‐band at center frequency 1.34 GHz decreases as G 1 is increasing. However, the coupling coefficients of the second, third, fourth pass‐band at center frequencies 2.2, 3.3, and 4.5 GHz increase or decrease in some area as G 1 is increasing, respectively. Figure shows the external quality factor of each pass‐band varies as the tapped location t varies.…”

Section: The Design Of Proposed Bpfmentioning

confidence: 98%

A quad‐band bandpass filter using split‐ring based on T‐shaped stub‐loaded step‐impedance resonators

Gan

Dai

et al. 2017

Micro & Optical Tech Letters

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In this article, a novel design method of multiband bandpass filters (BPFs) which have flexibly tunable center frequencies is presented by using T‐shaped stub‐loaded step‐impedance resonators (SLSIRs)’ multimode characteristics. By controlling the impedance ratios and the length ratios of the T‐shaped open stubs, the center frequencies of a multiband BPF can be decided. To verify the effectiveness of the proposed method, a 1.34/2.2/3.3/4.5 GHz quad‐band filter using split‐ring based on SLSIRs is designed, fabricated, and measured. The proposed filter is composed of a pair of tri‐section T‐shaped open stubs transmission lines, which form a folded split‐ring. By controlling the impedance ratios, the length ratios of the open stubs and the width of the gap of the folded split resonance loop, the quad‐band center frequencies are flexibly tunable. Owing to the 0° feed structure, seven transmission zeros can be realized near the pass‐band for enhancing the selectivity. The measured results show good agreement with the theory and the EM simulation.

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Section: The Design Of Proposed Bpfmentioning

confidence: 98%

A quad‐band bandpass filter using split‐ring based on T‐shaped stub‐loaded step‐impedance resonators

Gan

Dai

et al. 2017

Micro & Optical Tech Letters

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“…For this purpose, we calculate the frequency dependencies of the coupling coefficients in the substructures "Π-shaped conductorinput resonator of the channel" separately. Computations of the frequency-dependent coupling coefficients are carried out based on a 1D model of a substructure whose line parameters are calculated using a quasi-TEM approach [14,15]. In this computation, the microstrip substructure is divided into segments consisting of coupled and single lines, as shown by the dashed lines in Fig.…”

Section: Diplexer On a High Dielectric Constant Substratementioning

confidence: 99%

“…From these data, energies E RC (electric field energy stored by the resonator), E RL (magnetic field energy stored by the resonator), E MC (electric field energy stored by the matching circuit), E ML (magnetic field energy stored by the matching circuit), E RM C (electric field energy stored by the resonator and the circuit jointly), and E RM L (magnetic field energy stored by the resonator and the circuit jointly) are computed. The coefficients of inductive k L and capacitive k C coupling are obtained as a ratio of the jointly stored energy to the total energy [14,15]:…”

Section: Diplexer On a High Dielectric Constant Substratementioning

confidence: 99%

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Microstrip Diplexer With Π-Shaped Matching Circuit

Сержантов¹,

Govorun²,

Afonin³

et al. 2020

PIER Letters

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We propose a new method to match diplexer channels with a common port in which a Π-shaped strip conductor is used as a matching circuit. The applicability of the method is illustrated by simulating and fabricating a microstrip diplexer for GPS/GLONASS applications. The central frequencies of the channels are 1.234 GHz and 1.597 GHz, and their fractional bandwidths are 6.8% and 7.3%, respectively; minimum insertion losses are 1.05 dB and 1.08 dB. The main advantage of the diplexer is its compact size: 16.8 mm × 9.0 mm × 6.4 mm in housing. Using 1D models and a quasi-TEM approach, the frequency-dependent coupling coefficients between the matching circuit and input resonators of the channels are calculated, and the influence of the matching circuit's geometrical parameters on its coupling with diplexer channels is studied.

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“…Рассчитать коэффициент емкостной связи можно, используя методику, предложенную в [4]. Такой подход очень гибок, поскольку позволяет формировать требуемую характеристику фильтра, а также получить теоретическое обоснование зависимости характеристик фильтров от коэффициентов связи между резонаторами.…”

Section: фильтры на основе неоднородной микрополосковой линии передачиunclassified

Adjustable frequency-selective microwave structures based on heterogeneous microstrip transmission line

Mazur¹,

Serheieva²,

Tatarchuk³

et al. 2018

Mìkrosist. elektron. akust.

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Кафедра микроэлектроники Национальный технический университет Украины "Киевский политехнический институт имени Игоря Сикорского" kpi.ua Киев, Украина Реферат-Рассмотрены частотноселективные структуры на основе отрезков микрополосковой линии со ступенчатой неоднородностью. Проанализированы методы управления электродинамическими характеристиками полученных структур со ступенчатой неоднородностью. Проведен расчет структур фильтра и фазовращателя на основе отрезков микрополосковой линии со ступенчатой неоднородностью. Предложены конструкции частотноселективных устройств на основе этих структур. Приведены результаты измерений основных характеристик частотноселективных структур на основе отрезков микрополосковой линии со ступенчатой неоднородностью. Библ. 13, рис. 6. Ключевые словамикрополосковая линия со ступенчатой неоднородностью; фильтр СВЧ; фазовращатель; оптическое управление; электродинамические характеристики.

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Coupling factors of irregular microstrip quarter-wave resonators

Cited by 4 publications

References 0 publications

A quad‐band bandpass filter using split‐ring based on T‐shaped stub‐loaded step‐impedance resonators

A quad‐band bandpass filter using split‐ring based on T‐shaped stub‐loaded step‐impedance resonators

Microstrip Diplexer With Π-Shaped Matching Circuit

Adjustable frequency-selective microwave structures based on heterogeneous microstrip transmission line

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