A Ultra Compact Wideband Bandpass Filter Using a Quadmode Stub-Loaded Resonator

Zhang, Zhi‐Chong; Liu, Haiwen

doi:10.2528/pierl18042902

Cited by 8 publications

(6 citation statements)

References 7 publications

(16 reference statements)

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“…To estimate the factor of the four vias positions on the frequencies of the resonant modes, Figure 6 shows the simulated magnitude of |S 21 | with different t values. It is observed that the resonant frequencies f 2 , f 4 , and f 5 , which are representing by T M 2 110 , T M 210 , and T M 2 020 modes respectively, decrease with the increase of t, while f 1 and f 3 remain almost the same. This is because the perturbation vias are located where the electric fields of T M 1 110 and T M 1 020 are relatively weak.…”

Section: Cavity Structure and Electric Field Distribution In Eigen Modesmentioning

confidence: 96%

“…Recently, the multiple-mode resonator (MMR) approach becomes an important key to reduce the filter size and to improve the filtering performance, which was firstly proposed by [1]. Various research studies on multi-mode filters based on different configurations have been done to extend the filtering bandwidth [2][3][4][5][6][7][8][9]. The multiple-mode stub-loaded resonators in [2,3] exhibit good wideband performances with a very compact size.…”

Section: Introductionmentioning

confidence: 99%

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Quintuple-Mode Wideband Substrate Integrated Waveguide Filter With Elliptic Dielectric Loading

Ammari¹,

Riabi²,

Grine³

et al. 2020

PIER M

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This paper presents a novel quintuple-mode wideband filter based on a circular Substrate Integrated Waveguide (SIW) cavity. To implement this filter, a pair of two metallic perturbation vias loaded around the diameter resonator line is used. An Elliptic Dielectric Resonator (EDR) was introduced in the middle of the cavity to shift certain resonant modes and restrain the higher-order modes. The optimal dimensions and dielectric permittivity of the EDR are investigated. A single SIW resonator filter has been designed, manufactured, and measured as an experimental example to verify the proposed design. Simulation and measurement results agree with 51.7% of fractional bandwidth at 10.1 GHz central frequency, with one transmission zero (TZ) at the lower frequency side and four TZs at the upper side.

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Section: Cavity Structure and Electric Field Distribution In Eigen Modesmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Quintuple-Mode Wideband Substrate Integrated Waveguide Filter With Elliptic Dielectric Loading

Ammari¹,

Riabi²,

Grine³

et al. 2020

PIER M

View full text Add to dashboard Cite

show abstract

“…In the past, several UWB-BPF design methods have been proposed [4][5][6][7][8][9][10][11][12][13][14][15][16]. In [4], the steppedimpedance resonator (SIR) was used to effectively obtain the wideband performance by controlling the spurious frequencies.…”

Section: Introductionmentioning

confidence: 99%

“…In [7,8], the defect ground structure (DGS) was used in the UWB design; however, the DGS would usually destroy the signal integrality. In [9][10][11], wideband BPFs with notched bands were designed using different open/shorted stub-loaded resonators. In [12], a wideband bandpass filter was proposed by means of split circular rings and rectangular stubs.…”

Section: Introductionmentioning

confidence: 99%

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An Ultra-Wideband Bandpass Filter with a Notch Band and Wide Upper Bandstop Performances

et al. 2019

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This paper presents an ultra-wideband bandpass filter (UWB-BPF) with a notch band and a wide upper stopband. Two pairs of half-wavelength high-impedance line resonators tightly and strongly coupled to the input/output lines are used to provide the wideband responses. The first UWB responses of 3.4–5.0 GHz and the second UWB of 6.0–10.0 GHz are designed independently first and then combined together for the application of a direct-sequence ultra-wideband bandpass (DS-UWB) system. Without using any extra bandstop structure, a notch band at 5.2 GHz can be obtained. The fabricated UWB-BPF with a compact circuit size exhibits good passband performances including insertion losses of 1 ± 0.3 and 2 ± 0.4 dB for first and second passbands, respectively, a high isolation at 5.2 GHz with an attenuation level of 22.7 dB, and wide upper stopband responses from 11 GHz to 19 GHz, simultaneously. The measured results also exhibit good agreement with the simulated results.

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Design of wideband bandpass filter with high and wide stopband rejection using asymmetrical‐loaded stepped ‐impedance resonator

Xiong¹,

Wang

2020

Int J RF Microw Comput Aided Eng

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This study presents a wideband bandpass filter (WBBPF) with wide and high stopband suppression by loading a stepped-impedance resonator (SIR). The prototype of WBBPF is composed of an inverted π-shaped resonator with T-shaped resonator and open stub loaded, centrally. Odd-/even-mode analysis technique is employed to characterize the resonant properties of this prototype. Then, a SIR is loaded to this filter, asymmetrically, to improve the out-of-band performance. For experimental validation, a WBBPF is designed, fabricated, and tested. The measurement results show that the center frequency of WBBPF is located at 5.095 GHz, and the 3-dB fraction bandwidth is about 71%. Plus, the out-of-band suppression with 30-dB rejection level can be extended to 18.17 GHz.

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A Ultra Compact Wideband Bandpass Filter Using a Quadmode Stub-Loaded Resonator

Cited by 8 publications

References 7 publications

Quintuple-Mode Wideband Substrate Integrated Waveguide Filter With Elliptic Dielectric Loading

Quintuple-Mode Wideband Substrate Integrated Waveguide Filter With Elliptic Dielectric Loading

An Ultra-Wideband Bandpass Filter with a Notch Band and Wide Upper Bandstop Performances

Design of wideband bandpass filter with high and wide stopband rejection using asymmetrical‐loaded stepped ‐impedance resonator

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