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

Boutejdar, A.; Ellatif, Wael Abd; Ibrahim, Ahmed A.; Challal, Mouloud

doi:10.1002/mop.29705

Cited by 16 publications

(13 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to increase the number of bands of a structure, they were firstly implemented by the cascaded two filters at different frequencies, with the inherent disadvantage of increased total size [3]. Also they were realized by using a combination of a wide-band bandpass filter and a bandstop filter [4]. However, the size of topology remained a big challenger.…”

Section: Introductionmentioning

confidence: 99%

Design and Fabrication of Tri-Stopband Bandstop Filters Using Cascaded and Multi-Armed Methods

Boutejdar

Bennani

2017

AEM

View full text Add to dashboard Cite

In this paper, we proposed a compact C-open-loop ring resonator and its equivalent circuit. The second cascaded bandstop filter (BSF) are designed using this simple C-ring resonator. The double ring BSF consists of two cascaded Cring resonators, which are placed on the RO4003 substrate, while the other triple BSF structure consists of tree cascaded C-ring resonators, which are connected with input and output through microstrip feed lines. The both filters are simulated, optimized and partially realized using MWR simulator and Anritsu E5072A vector network analyzer VNA. In order to reduce the size and to improve the filter characteristics, novel compact filter topologies are designed basing on the previous structures. The proposed multi-band BSFs consist of several open-loop ring resonators placed vertically overlapping (coupled multi-armed ring resonator). Using this idea, the filter topologies with design flexibility, close size and excellent results are reached. The novel compact multi-band BSFs produce several stopband along a frequency range from DC to 9 GHz, in which each separate band exhibits an acceptable and useful bandwidth. Each stopband has regenerated two reflexion zeros, what leads to a good sharpness factors in the transition domains. Good agreement between the experimental results, full-wave simulation has been achieved. Such compact and flexible filters can be successfully used in several microwave and in modern wireless and mobile/satellite communication systems.

show abstract

Section: Introductionmentioning

confidence: 99%

Design and Fabrication of Tri-Stopband Bandstop Filters Using Cascaded and Multi-Armed Methods

Boutejdar

Bennani

2017

AEM

View full text Add to dashboard Cite

show abstract

“…1(a). Periodic or non-periodic defected ground structure (DGS) is realized by etching a slot in the backside metallic ground plane [20,21]. Most DGS structures consist of two-dimensional periodic slot in the ground metallic plane.…”

Section: Introductionmentioning

confidence: 99%

Design of Compact Reconfigurable Broadband Band-Stop Filter Based on a Low-Pass Filter Using Half Circle DGS Resonator and Multi-Layer Technique

Boutejdar¹

2017

PIER C

Self Cite

View full text Add to dashboard Cite

Abstract-This paper describes the design of a two-pole low-pass and band-stop filters. The low-pass structure is designed at the cutoff frequency of 2 GHz for the L-Band applications. This architecture uses half circle defected ground structure HCDGS instead full circle DGS resonator. Both the HCDGS shapes are etched in the ground plane and coupled via a substrate with a compensated capacitor. The rejection bandwidth of the LPF covers a large wideband spectrum. Therefore, the band suppression reaches more than 3f c. The filter is simulated and fabricated. The measured results are in good agreement with the full-wave simulated ones, showing the merits of compact size and sharp roll-off. The multi-layer technique has been used in order to realize a transformation from low-pass behaviours to band-stop characteristics, keeping the same passband features. The new extracted band-stop topology is simulated and optimized using an RO4003 substrate with relative permittivity of 3.38 and thickness of h = 0.813 mm. The structure has a wide stopband with over 20 dB rejection from 3.5 GHz to 8.5 GHz. Such filters can be used for L-band and military applications.

show abstract

“…Over these years, microstrip planar low-pass filters have been widely proposed as an approach solution to solve the most difficult technical challenges in microwave and wireless communication areas. One of the techniques that can be applied to planar LPF is employing a cascaded method in which the resonators are placed vertically or horizontally side by side [4][5][6][7][8][9][10]. The disadvantages of using this procedure appear in filter size and insertion loss, which not completely achieve the requirements of communication systems.…”

Section: Introductionmentioning

confidence: 99%

Design of Low-Pass Filter Using Meander Inductor and U-Form Hi-Lo Topology With High Compactness Factor for L-Band Applications

Ali¹,

Boutejdar²

2017

PIER M

Self Cite

View full text Add to dashboard Cite

Abstract-In this paper, novel compact low-pass filters using Hi-Lo technique and meander method are proposed. Series of the proposed filters are designed by adding modifications along the microstrip line (meander inductor) and by using U-form topology. The size of the proposed filter can be reduced by 15% compared to the conventional filter while maintaining the optimal low-pass features. The compact meander LPF consists of two thin microstrip lines, which are connected with 50 Ω microstrip feed lines and a microstrip patch placed in the middle of the structure. The thin lines and the microstrip patch correspond to inductance and capacitance, respectively. The proposed meander Hi-Lo topology has been mounted on an RO4003 substrate with a relative dielectric constant ε r = 3.38, thickness h = 0.813 mm and loss tangent 0.0027. The compact L-band low-pass structure has a size of (0.263λ g × 0.175λ g ) where λ g = 57 mm is the wavelength at the cutoff frequency 2.85 GHz. In addition to a good compactness, the structure exhibits a simple design, very low insertion loss in the passband (L-band) of less than 0.3 dB, and it achieves a wide rejection bandwidth with a 20 dB attenuation from 5.3 to 6.3 GHz. The excellent LPF characteristics are verified through simulations and measurements where a good consistency can be observed. Such compact filter structures are expected to be used in various microwave system applications.

show abstract

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

Cited by 16 publications

References 10 publications

Design and Fabrication of Tri-Stopband Bandstop Filters Using Cascaded and Multi-Armed Methods

Design and Fabrication of Tri-Stopband Bandstop Filters Using Cascaded and Multi-Armed Methods

Design of Compact Reconfigurable Broadband Band-Stop Filter Based on a Low-Pass Filter Using Half Circle DGS Resonator and Multi-Layer Technique

Design of Low-Pass Filter Using Meander Inductor and U-Form Hi-Lo Topology With High Compactness Factor for L-Band Applications

Contact Info

Product

Resources

About