Tri-band cross-coupling bandpass filter with rectangular defected ground structure array

Ma, Miao; Tang, Zongxi; Cao, Xin; Qian, Ting

doi:10.1080/09205071.2018.1439407

Cited by 8 publications

(7 citation statements)

References 9 publications

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“…Recent years, the defected ground structure (DGS) 1 has attracted more and more research interest due to the wide applications at microwave, millimeter-wave, and terahertz bands. For example, it can be used to improve the electromagnetic wave manipulating performances of passive and active microwave/millimeter-wave components, including the high-performance antenna, [2][3][4][5][6][7][8][9] filter, [10][11][12][13][14][15][16][17][18][19][20][21][22] transmission line, 23 power division network, 24 wireless power transfer, 25 oscillator, 26 and low noise amplifier. 27 Specifically, for antenna application, circular dumbbell-shaped DGS is used to contribute additional resonance and miniaturize the antenna size, 2 full-length resonant-type and asymmetric DGS can reduce the cross-polarized radiation, 3,4,9 Fractal DGS can reduce the mutual coupling of coplanar spaced microstrip antenna elements 5 and also generate circularly polarized radiation, 6 S-shaped DGS is used to achieve the ultra-wideband antenna with multiple band-rejection properties, 7 and Г-shaped DGS can be used to improve the impedance matching property for the magnetoelectric dipole antenna.…”

Section: Introductionmentioning

confidence: 99%

Millimeter‐wave substrate integrated waveguide bandpass filters based on stepped‐impedance E ‐shaped defected ground structure s

Zheng

Wei

2022

Int J RF Mic Comp-Aid Eng

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This article presents a new defected ground structure (DGS) and expands its application for designing high-performance bandpass filters based on substrate integrated waveguide (SIW) platform. The presented DGS is consisted of two complementary stepped-impedance E-shaped structures and placed them together face-to-face. Such designed DGS is inserted into the top layer of a millimeter-wave SIW to act as high-frequency stopping property. Based on the proposed DGS, two high-performance SIW bandpass filters with single-band and dual-band features are achieved, by fabricating prototypes and experimentally investigating the filtering performances. Good agreements between the simulations and experiments are obtained. Such proposed SIW bandpass filters based on the designed new DGS can be widely used in the upcoming 5G communication area.

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Section: Introductionmentioning

confidence: 99%

Millimeter‐wave substrate integrated waveguide bandpass filters based on stepped‐impedance E ‐shaped defected ground structure s

Zheng

Wei

2022

Int J RF Mic Comp-Aid Eng

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“…The filter has the advantage of exciting five TZs on either edge of the passbands, however, the circuit suffers a larger circuit area. To improve the 3-dB roll-off skirts, a filter with eight TZs based on defected ground structure array was designed and fabricated in [18], for WiMAX, WLAN and LTE applications. The proposed model has the advantage of high selectivity but low fractional bandwidth, circuit complexity, poor passbands insertion loss and larger circuit area were a major shortcoming of that design.…”

Section: Introductionmentioning

confidence: 99%

Design of a Compact Microstrip Triple Independently Controlled Pass Bands Filter for GSM, GPS and WiFi Applications

et al. 2020

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An ultra-compact triple-band bandpass filter based on dual-mode quarter-wave resonator for GSM, GPS, and WiFi applications is presented in this study. The filter consists of three quarter-wave resonators assisting in controlling each passband independently. The first operating frequency band is obtained by the direct-feed resonator which acts as a source to load coupling for the inner two resonators which are operating at higher frequency bands. The outermost resonator is coupled to the inner loaded resonators, thus a pair of transmission zeros between each passband can be excited and hence high-frequency selectivity can be obtained. To miniaturize the overall size of the filter, all resonators are folded and are jointly connected through a common metallic via with the ground. The design has a symmetric structure therefore, even-odd mode analysis method is applied to obtain the three controllable operating frequency bands. The first operating band is centered at 850 MHz which caters for GSM applications, while the second and third frequency bands centered at 1.57 GHz and 2.4 GHz fall in the GPS and WiFi wireless applications. The filter with an ultra-compact size of 0.10 λ g × 0.09 λ g (0.009λ 2 g) despite feed lines (λ g is the waveguide length centered at 850 MHz) is designed, fabricated and measured for the purpose of validation. Both the simulated and measured results are in good agreement and endorse the design concept. INDEX TERMS Tri-band filter, quarter-wavelength resonator, microstrip BPF filter, transmission zeros, wireless applications.

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“…Other filters configurations such as defected ground structure filters 12 and stepped impedance resonators 13 are used. Wide stopband and transmission zeros (TZs) bandpass filters have been previously discussed for UWB BPFs, dual‐band, and multi‐BPFs as in 14‐18 . Cascading two different filters is the direct approach for UWB filter design.…”

Section: Introductionmentioning

confidence: 99%

Novel configuration of ultra‐wide band uni‐planar configuration of complementary split ring resonator composite right/left‐handed based band pass filter with sharp roll off and good stopband attenuation

Abdalla

Aziz

Arafa

2020

Int J RF Microw Comput Aided Eng

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In this paper, a compact novel simple design of ultra-wide bandpass filter with high out of band attenuation is presented. The filter configuration is based on combining an ultra-wide band composite right/left-handed (CRLH) band pass filter (BPF) with simple uni-planar configuration of complementary split ring resonator (UP-CSRR). By integrating two UP-CSRR cells, the ultra-wideband CRLH filter roll-off and wide stopband attenuation are enhanced. The filter has 3 dB cutoff frequencies at 3.1 GHz and 10.6 GHz with insertion loss equals 0.7 dB in average and minimum and maximum values of 0.48 dB and 1.05 dB, respectively over the filter passband. Within the passband. The transition band attenuation from 3 dB to 20 dB is achieved within the frequency band 1.9 GHz to 3.1 GHz (48%) at lower cutoff and the frequency band 10.6 GHz to 11.4 GHz (7%) at upper stopband. Moreover, the filter has a wide stopband attenuation >20 dB in frequencies 11 GHz to 13.6 GHz (21%) and ends with 3 dB cutoff frequency at 14.8 GHz. Furthermore, the designed filter size is very compact (23 × 12 mm 2) whose length is only about 0.17 λ g at 6.85 GHz. The filter performance is examined using circuit modeling, full-wave simulations, and experimental measurements with good matching between all of them.

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Tri-band cross-coupling bandpass filter with rectangular defected ground structure array

Cited by 8 publications

References 9 publications

Millimeter‐wave substrate integrated waveguide bandpass filters based on stepped‐impedance E ‐shaped defected ground structure s

Millimeter‐wave substrate integrated waveguide bandpass filters based on stepped‐impedance E ‐shaped defected ground structure s

Design of a Compact Microstrip Triple Independently Controlled Pass Bands Filter for GSM, GPS and WiFi Applications

Novel configuration of ultra‐wide band uni‐planar configuration of complementary split ring resonator composite right/left‐handed based band pass filter with sharp roll off and good stopband attenuation

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