Design and Fabrication of a Lowpass Filter Using a New Butterfly-Shaped Defected Ground Structure
الموضوعات : Majlesi Journal of Telecommunication Devices
Majeed Zaidan
1
(Middle Technical University, Electrical Technical Department, Baghdad, Ir)
Vahid Rezaeian
2
(Ferdowsi University, Department of Electrical Engineering, Mashhad, Ira)
Saber Izadpanah Toos
3
(Sadjad University of Technology, Department of Electrical Engineering, Mashhad, Iran)
الکلمات المفتاحية: DGS, Defected Ground Structure, Microstrip Filter, low-pass filter,
ملخص المقالة :
In this paper, a new Defected Ground Structure (DGS) is introduced and analyzed. The effect of the structure’s dimensions on the location of the attenuation pole and the cutoff frequency to study the frequency characteristics is investigated. In the following, a lowpass filter with 3 dB cutoff frequency at 3 GHz is designed and optimized using the proposed defected ground structure, and its frequency characteristic is reported. The designed lowpass filter is fabricated to verify the simulation process. Also, simulation results, the equivalent circuit, and the measured results with the Network Analyzer are compared.
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