A COMPACT LOW-PASS FILTER WITH SHARP CUTOFF AND LOW INSERTION LOSS CHARACTERISTIC USING NOVEL DEFECTED GROUND STRUCTURE

A design and simulation for low pass microstrip line filter with defected ground structure has been researched, the main purpose is with the simplest method to design an ideal low pass filter. In this paper, simulated soft (Ansoft HFSS V.6.0) used to be simulated the frequency response under different geometric shape of DGS. The results show good performance of a low pass filter with DGS. Final, a low pass filter with DGS design and fabricated, The properties are shown as flow: center-frequency: 7.28G, S21:-47dB, cut-off frequency: 5.88GHz.

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Novel Low-Pass Microwave Filter Based on Rectangular Ring DGS

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.273.371 ◽

2013 ◽

Vol 273 ◽

pp. 371-374

Author(s):

Bao Ping Li ◽

Yan Liang Zhang

Keyword(s):

Stop Band ◽

Center Frequency ◽

Pass Band ◽

Band Pass Filter ◽

Defected Ground Structure ◽

Ground Structure ◽

Pass Filter ◽

Low Pass Filter ◽

Compact Size ◽

Low Pass

Due to the frequency response periodicity of distributed transmission line, microstrip band-pass filter usually produces parasitic pass-band and outputs harmonics away from the center frequency of main pass-band. Based on the study of rectangular ring defected ground structure, a 5-order microstrip LPF(low-pass filter) was designed using the single-pole band-stop and slow-wave characteristics of the rectangular ring DGS(Defected Ground Structure) and SISS(Step-Impedance Shunt Stub) structure. Compared with traditional LPF, this LPF presents the advantages of compact size, low insertion loss, broad stop-band and high steep. It also validates the requirements of miniaturization and high performance for filters.

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A compact low pass filter design with a fan-shaped defected ground structure for broad stopband

2013 8th International Conference on Electrical and Electronics Engineering (ELECO) ◽

10.1109/eleco.2013.6713876 ◽

2013 ◽

Cited By ~ 1

Author(s):

Agah Oktay Ertay ◽

Mehmet Abbak ◽

Serkan Simsek

Keyword(s):

Filter Design ◽

Defected Ground Structure ◽

Ground Structure ◽

Pass Filter ◽

Low Pass Filter ◽

Low Pass

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Design of A Miniaturized Low Pass Filter Using Common Defected Ground Structure

Journal of the Korea Academia-Industrial cooperation Society ◽

10.5762/kais.2011.12.5.2298 ◽

2011 ◽

Vol 12 (5) ◽

pp. 2298-2304 ◽

Cited By ~ 1

Author(s):

Jun Lee ◽

Jae-Hoon Lee ◽

Jong-Sik Lim ◽

Dal Ahn

Keyword(s):

Defected Ground Structure ◽

Ground Structure ◽

Pass Filter ◽

Low Pass Filter ◽

Low Pass

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Compact wide stopband low-pass filter using rectangular patch compact microstrip resonant cell and defected ground structure

Microwave and Optical Technology Letters ◽

10.1002/mop.22259 ◽

2007 ◽

Vol 49 (4) ◽

pp. 798-800 ◽

Cited By ~ 21

Author(s):

Santanu Dwari ◽

Subrata Sanyal

Keyword(s):

Defected Ground Structure ◽

Ground Structure ◽

Pass Filter ◽

Low Pass Filter ◽

Rectangular Patch ◽

Low Pass

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A low insertion loss low-pass filter based on single comb-shaped spoof surface plasmon polaritons

International Journal of Microwave and Wireless Technologies ◽

10.1017/s1759078719000564 ◽

2019 ◽

Vol 11 (08) ◽

pp. 792-796

Author(s):

Luping Li ◽

Lijuan Dong ◽

Peng Chen ◽

Kai Yang

Keyword(s):

Surface Plasmon ◽

Insertion Loss ◽

Return Loss ◽

Comparison Result ◽

Pass Filter ◽

Low Pass Filter ◽

Low Pass ◽

Low Insertion Loss ◽

Lower Insertion Loss ◽

Single Comb

AbstractThis paper presents a low insertion loss low-pass filter based on the spoof surface plasmon polariton (SSPP) with single comb-shape. Compared with traditional ones, the proposed filter provides lower insertion loss and return loss by optimizing the structural parameters of the mode conversion and SSPP parts. According to the measurement results, the average insertion loss of the fabricated filter is 0.41 dB and the return loss of which at the near-zero-hertz band is <−25.9 dB. The S parameter comparison result between the unoptimized and optimized filters demonstrates that the optimized filter provides lower insertion loss and return loss, smaller size, and better out-of-band rejection. The dispersion comparison result reveals the reasons behind the improved performances. The better performances of the optimized filter proves that breaking the regularity of traditional SSPP filters is beneficial to the filter's performances.

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