─ A novel quarter-circle defected ground structure shape is introduced in this paper to design and implement an ultra-wide reject band low-pass filter (LPF). Moreover, an equivalent circuit model (ECM) is presented. The proposed LPF has small size and, a low insertion loss and a return loss less than -20 dB. Also, a round -20 dB suppression level ranging from 4 GHz to more than 20 GHz is achiev...

This paper proposes a new type of double flower shaped DGS structure which when etched on the metallic ground plane of a simple microstrip line gives low-pass filter characteristics. This is due to the metamaterial behaviour of the DGS. The frequency characteristics of the DGS are investigated by simulating the structure in Mom based IE3D simulator. The effective parameters of the metamaterial ...

This paper proposes a novel Inset Feed Microstrip patch antenna with Z and F shape defect in ground plane. Initially simple inset feed rectangular Patch Antenna is designed and results are analyzed. Further this design is modified by etching Z and F shaped defect on ground plane. Defected Ground Structure is studied to enhance the performance parameters of microstrip patch antenna. Proposed ant...

this paper presents a new design for a microstrip dual-band band-pass microstrip filter (bpf) with suitable isolation between two passbands. in this design, a basic structure is used to achieve a desirable frequency characteristic in the passband. in this regard, defected ground structure (dgs) is implemented to reach optimum parameters of the filter such as bandwidth, return loss, insertion lo...

A novel ultra-wideband (UWB) bandpass filter (BPF) with a fractional bandwidth (FBW) of about % 110 is presented using the hybrid microstrip-defected-ground structure (DGS). The proposed filter was designed using a combination of hybrid microstrip-defected-ground structure lowpass filter (LPF) with typical quarter-wavelength short-circuited stubs highpass filter (HPF), followed by an optimizati...

This study discusses the design and manufacture of microstrip antennas that aim to widen bandwidth in application Wi-Fi form a hexagonal patch composed 2x4 element array. Microstrip have weakness, namely narrow bandwidth, therefore modification is needed using DGS (Defected Ground Structure) method dumbbell circle head. The allocation working frequency often used community 2.4 GHz accordance wi...