Novel Wideband Bandpass Filter Integrating HMSIW with DGS

Song, Q. Y.; Cheng, Hongsheng; Wang, X. H.; Xu, Le; Chen, X. Q.; Shi, Xiao Wei

doi:10.1163/156939309789932412

Cited by 33 publications

(16 citation statements)

References 18 publications

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“…It is much easier to establish the equivalent circuit because the transmission, reflection, and suppression characteristics of DGS microstrip line are very clear and definite. Furthermore, DGS has prominent advantages of being applied to microwave circuits such as filters, dividers, couplers, amplifiers, and so on [7,[9][10][11][12][13][14][15][16][17][18][19][20]. Figure 4 shows the microstrip line with SIAD structures proposed recently [6].…”

Section: Defected Ground Structures (Dgs)mentioning

confidence: 99%

See 1 more Smart Citation

A New Calculation Method for the Characteristic Impedance of Transmission Lines With Modified Ground Structures or Perturbation

Lim¹,

Lee²,

Lee³

et al. 2010

PIER

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Abstract-In this paper, a new calculating method for the characteristic impedance (Z c ) of transmission lines with perturbation and periodic modified ground structure (MGS), such as defected ground structure (DGS), photonic bandgap (PBG), and substrate integrated artificial dielectric (SIAD), is discussed. The proposed method is based on simple transmission line theories and proper related equations. The previous method to find Z c of transmission lines with MGS or perturbation produces the fluctuating Z c value depending on frequency, while the proposed method results in a constant value without frequency-dependence. As examples, several microstrip lines with DGS, PBG, and SIAD structure are simulated and measured, and their Z c values are calculated from S-parameters by the previous and proposed methods. It is shown that the Z c obtained by the proposed method is much more reliable than that calculated by the previous method for all examples.

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Section: Defected Ground Structures (Dgs)mentioning

confidence: 99%

“…In addition, those structures have been widely applied to high frequency circuits such as filters, dividers, couplers, mixers, amplifiers, multipliers, baluns, and antennas [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

A New Calculation Method for the Characteristic Impedance of Transmission Lines With Modified Ground Structures or Perturbation

Lim¹,

Lee²,

Lee³

et al. 2010

PIER

View full text Add to dashboard Cite

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“…The half-mode substrate integrated waveguide (HMSIW) has been developed for microwave and millimeter wave applications [6,7]. The HMSIW gave good performance and almost 50% reduction in SIW size.…”

Section: Introductionmentioning

confidence: 99%

A Substrate Integrated Waveguide Bandpass Filter Using Novel Defected Ground Structure Shape

Huang¹,

Shao²,

Liu³

2013

PIER

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Abstract-In this paper, a X-band wideband bandpass filter based on a novel substrate integrated waveguide-to-defected ground structure (SIW-DGS) cell is presented. In the cell, the DGS is etched on the top plane of the SIW with high accuracy, so that the performance of the filter can be kept as good as possible. Finally, the filter, consisting of three cascaded cells, is designed and measured to meet compact size, low insertion loss, good return loss as well as smooth group delay. There is good agreement between the measurement and simulation results.

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“…Because the field distribution in the SIW cavity is symmetrical, recently, the concept 'half mode substrate integrated waveguide (HMSIW)' [9][10][11][12] and 'quarter-mode substrate integrated waveguide (QMSIW)' [13,14] have attracted much interest in the design of bandpass filter. Compared with SIW, HMSIW has nearly 50% reduction and QMSIW has nearly 75% reduction in size, respectively.…”

Section: Introductionmentioning

confidence: 99%

A Compact Wideband Bandpass Filter Using Novel CSRR Loaded Qmsiw Resonator With High Selectivity

Cao

He²,

Li³

et al. 2013

PIER C

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Abstract-A novel quarter-mode substrate integrated waveguide (QMSIW) resonator with back-to-back triangular complementary split-ring resonators (CSRRs) etched on the waveguide surface is proposed in this paper. The proposed CSRR structures allow the implementation of a forward-wave passband propagating with high selectivity below the characteristic cutoff frequency of the conventional QMSIW. Utilizing the property of flexible open structure on QMSIWs' two sides, a cascaded quadruplet (CQ) bandpass filter (BPF) using the proposed QMSIW resonator and proximity coupling structure is presented. Compared with some other reported BPFs with SIW technique, the presented BPF using the novel QMSIW resonator has great improvements on size reduction and selectivity, simultaneously, with simple geometry. At the center frequency of 3.7 GHz, the designed BPF filter achieves a wideband with a fractional bandwidth up to 24.3% and a high selectivity with a shape factor of 1.23. The compact dimension of this filter is as small as 0.36λ g × 0.36λ g , where λ g is the guide wavelength at the center frequency. The proposed filter is simulated, fabricated and tested. The measured results are in good agreement with the simulation.

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Novel Wideband Bandpass Filter Integrating HMSIW with DGS

Cited by 33 publications

References 18 publications

A New Calculation Method for the Characteristic Impedance of Transmission Lines With Modified Ground Structures or Perturbation

A New Calculation Method for the Characteristic Impedance of Transmission Lines With Modified Ground Structures or Perturbation

A Substrate Integrated Waveguide Bandpass Filter Using Novel Defected Ground Structure Shape

A Compact Wideband Bandpass Filter Using Novel CSRR Loaded Qmsiw Resonator With High Selectivity

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