Size reduction and harmonic suppression of parallel coupled-line bandpass filters using defected ground structure

Karshenas, F.; Mallahzadeh, Alireza; Rashed-Mohassel, J.

doi:10.1109/antemursi.2009.4805078

Cited by 12 publications

(4 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Due to their improved performance characteristics, many filter techniques and methodologies have been proposed and successfully realized. Defected ground structures (DGSs) with and without periodic array have been realized by etching a pattern in the backside of the metallic ground plane to obtain the stopband effect [1][2][3][4][5][6][7][8][9][10][11][12][13]. DGS often consisted of two large defected areas and a narrow connecting slot channel, which corresponds to its equivalent L-C elements [14].…”

Section: Introductionmentioning

confidence: 99%

Design of a Novel Ultrawide Stopband Lowpass Filter Using a DMS-DGS Technique for Radar Applications

Boutejdar

Ibrahim

Burte

2015

International Journal of Microwave Science and Technology

View full text Add to dashboard Cite

A novel wide stopband (WSB) low pass filter based on combination of defected ground structure (DGS), defected microstrip structure (DMS), and compensated microstrip capacitors is proposed. Their excellent defected characteristics are verified through simulation and measurements. Additionally to a sharp cutoff, the structure exhibits simple design and fabrication, very low insertion loss in the pass band of 0.3 dB and it achieves a wide rejection bandwidth with overall 20 dB attenuation from 1.5 GHz up to 8.3 GHz. The compact low pass structure occupies an area of (0.40λg × 0.24λg) where λg = 148 mm is the waveguide length at the cut-off frequency 1.1 GHz. Comparison between measured and simulated results confirms the validity of the proposed method. Such filter topologies are utilized in many areas of communications systems and microwave technology because of their several benefits such as small losses, wide reject band, and high compactness.

show abstract

Section: Introductionmentioning

confidence: 99%

Design of a Novel Ultrawide Stopband Lowpass Filter Using a DMS-DGS Technique for Radar Applications

Boutejdar

Ibrahim

Burte

2015

International Journal of Microwave Science and Technology

View full text Add to dashboard Cite

show abstract

“…This will form a resonant circular current in the ring or rings and hence dictate the resonant frequency. It therefore behaves like a magnetic field driven by inductor and capacitor ( ) resonant tanks that are externally driven by the magnetic field [14].…”

Section: Introductionmentioning

confidence: 99%

Turn Ratio, Substrates’ Permittivity Characterization, and Analysis of Split Ring Resonator Based Antenna

Olokede

Mohd-Razif

Mahyuddin

2015

International Journal of Microwave Science and Technology

View full text Add to dashboard Cite

The turn ratio, coupling space between sections, and substrate permittivity effects on spilt ring resonator (SRR) are investigated. The analysis of the presented SRR with respect to the effects of substrate and number of gaps per ring to further characterize its peculiarities is experimented with miniaturized capability as our intent. Six different SRRs were designed with different turn ratios, and the sixth is rectangular microstrip patch centre-inserted. Different numbers and gap sizes are cut on the SRRs while the gap spacing between the conductors of the SRR was varied to determine their effects taking cognizance of the effects of different substrates. The designs were investigated numerically using 3D finite integration technique commercial EM solver, and the resulting designs were prototyped and subsequently measured. Findings indicate that the reflection coefficient of the MSRR with centre-inserted patch antenna is better compared to MSRR without the patch antenna irrespective of the laminate substrate board, and so is its gain.

show abstract

“…However, it is bulky, expensive and hard to be integrated in monolithic microwave integrated (MMIC) devices. To overcome this defect, HSAs have been extensively investigated these years: shorting pin [4], tuning stub [5], defected ground plane structure (DGS) [6], photonic band gap (PBG) patch [7] antennas can all suppress the harmonic effectively. However, all those HSAs are single-frequency antennas, which cannot meet the trends of multi-frequency and integration…”

Section: Introductionmentioning

confidence: 99%

A Novel Compact Dual-band Antenna with Harmonic Suppression

Zhou¹,

Li²,

Hong³

et al. 2012

Frequenz

View full text Add to dashboard Cite

A novel compact dual band microstrip-fed antenna with harmonic suppression which works at 2.45 GHz and 5.8 GHz is firstly proposed in this paper. By exploiting T-shaped microstrip structure, the 1 st and 2 nd harmonic frequencies are suppressed effectively. Meanwhile, two Ushaped patches fit together are used to take full advantage of the space, thus the antenna total size is reduced greatly as well. Furthermore, dual bands can be achieved. General performance of the proposed antenna is studied by current distribution and parameter sweeps. The experimental results agree well with the simulated dates.

show abstract

Size reduction and harmonic suppression of parallel coupled-line bandpass filters using defected ground structure

Cited by 12 publications

References 23 publications

Design of a Novel Ultrawide Stopband Lowpass Filter Using a DMS-DGS Technique for Radar Applications

Design of a Novel Ultrawide Stopband Lowpass Filter Using a DMS-DGS Technique for Radar Applications

Turn Ratio, Substrates’ Permittivity Characterization, and Analysis of Split Ring Resonator Based Antenna

A Novel Compact Dual-band Antenna with Harmonic Suppression

Contact Info

Product

Resources

About