Design of compact low‐pass filter with large reject band using open circuit stubs and two‐cascaded DGS quasitriangular resonators

Challal, Mouloud; Boutejdar, A.; Azrar, Arab; Vanhoenacker‐Janvier, Danielle

doi:10.1002/mop.27260

Cited by 16 publications

(10 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Microstrip line is one of the most commonly used microwave and millimetre wave transmission lines. Microstrip line crossovers are unavoidable in some applications, such as feeding networks of switched beam antennas [1], multichannel systems [2], and so forth. The air-bridge is the simplest and most compact crossover structure.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

A new approach to design compact tunable BPF starting from simple LPF topology using a single T‐DGS‐resonator and ceramic capacitors

Boutejdar

2016

Micro & Optical Tech Letters

Self Cite

View full text Add to dashboard Cite

In this article, a novel very compact DGS lowpass filter (LPF) and reconfigurable bandpass filter are proposed. The designed filter consists of one T‐DGS resonator, which is excited by 50 ohm microstrip line, placed on top layer between the input and output of the proposed structure. The selected filter topology has several advantageous compared with the other previous works such as the compactness and its simple design. The addition of compensated patch capacitor improves the low insertion loss and ultra‐wide stopband with 15 dB attenuation from 2.2 to 3.6 GHz. The size of the proposed single T‐DGS LPF‐BPF is less as (0.023 λg × 0.044 λg) with λg = 0.263 m. The tunable bandpass filter (BPF) is extracted from LPF topology using variable Chip Monolithic Ceramic Capacitors and J‐inverter technique. Finally, the measured, EM‐ and field simulation results are presented and discussed. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1142–1148, 2016

show abstract

Section: Resultsmentioning

confidence: 99%

“…The parallel capacitance and the inductance of the equivalent DGS-circuit can be derived by substituting with the values of f 0 5 3.09 GHz and f c 5 2.1 GHz in (1) and (2). The computed values of parameters L and C are respectively 1.74 nH and 0.71 pF.…”

Section: The Equivalent Circuit Model Of Hairpin T-dgs Resonatormentioning

confidence: 99%

A new approach to design compact tunable BPF starting from simple LPF topology using a single T‐DGS‐resonator and ceramic capacitors

Boutejdar

2016

Micro & Optical Tech Letters

Self Cite

View full text Add to dashboard Cite

show abstract

“…The filter is designed and simulated using commercially available electromagnetic simulators. The cutoff‐ and first‐stop frequencies have not changed from their previous positions, but the advantage is that the new LPF is 30% more compact than the conventional one , as shown in Figures and . The simulation results show that the designed filter has a corner frequency of 3 GHz and smaller losses in the pass band.…”

Section: Design Of Double Qah Dgs With Single Strip Resonator Lpfmentioning

confidence: 99%

A simple transformation from lowpass to bandpass filter using a new quasi‐arrow head defected ground structure resonator and gap‐J‐inverter

Boutejdar

Ellatif

Ibrahim

et al. 2016

Micro & Optical Tech Letters

Self Cite

View full text Add to dashboard Cite

In this article, a new compact quasi‐arrow head defected ground structure (DGS) lowpass filter (LPF) is proposed. The proposed DGS behaves as a resonant element which allows size compactness and harmonic suppression in the rejection band. The proposed LPF presents the advantages of compactness, low insertion loss, and ultrawide stopband with 20 dB attenuation from 6 GHz to >20 GHz. The length of the proposed multilayer LPF is reduced to 0.143 λg at 3 GHz in comparison with 0.2 λg for the cascaded topology with λg = 0.157 m. A novel compact bandpass filter (BPF) is presented by utilizing a simple transformation from LPF based on J‐inverter technique. The proposed BPF has low insertion loss and compact size. Finally, the simulated and experimental results of proposed structure are found to be in good agreement with the simulation results. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:947–953, 2016

show abstract

“…Low-pass filters (LPFs) based on defected ground structure (DGS) patterns have been proposed for a particular requirement and application [1,2].…”

Section: Introductionmentioning

confidence: 99%

Sharp-Rejection, Wide and Deep Stopband Low Pass Filter Design Using Open Stubs and DGS Patterns

Challal

Boulakroune

2016

Acta Phys. Pol. A

Self Cite

View full text Add to dashboard Cite

A sharp rejection, wide and deep stopband microstrip low pass filter is investigated in this paper. The proposed low pass filter is composed of three defected ground structure patterns and four open stubs. Simulated results verify that the filter has a sharpness factor of 0.9, a low insertion loss of 0.65 and a return loss less than 15 dB. Moreover, a wide stopband at 20 dB rejection ranging from 4.55 GHz to 11.62 GHz is accomplished. The filter presented in this work was compared with the previous works completed on low pass filter with sharp rejection. It has shown that the filter provides good performances in terms of sharp rejection, wide and deep rejection band and small passband insertion loss compared to those reported in the literatures.

show abstract

Design of compact low‐pass filter with large reject band using open circuit stubs and two‐cascaded DGS quasitriangular resonators

Cited by 16 publications

References 12 publications

A new approach to design compact tunable BPF starting from simple LPF topology using a single T‐DGS‐resonator and ceramic capacitors

A new approach to design compact tunable BPF starting from simple LPF topology using a single T‐DGS‐resonator and ceramic capacitors

A simple transformation from lowpass to bandpass filter using a new quasi‐arrow head defected ground structure resonator and gap‐J‐inverter

Sharp-Rejection, Wide and Deep Stopband Low Pass Filter Design Using Open Stubs and DGS Patterns

Contact Info

Product

Resources

About