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A novel compact defected ground structure (DGS) lowpass filter (LPF) and tunable bandpass filter (BPF) are proposed in this paper. The designed filter consists of one TDGS resonator, which is excited by 50 ohm microstrip line, placed on top layer between the input and output this structure. The addition of compensated patch capacitor improves the low insertion loss and ultra-wide stopband with 15...
This paper presents a design and realization of a compact size third order coupled resonators band pass filter based on metamaterial split ring resonators. The proposed filter has center frequency of 2.4 GHz for wireless LAN applications with single transmission zero at 2.6 GHz. The filter design is based on the coupling matrix and external quality factor extraction and confirmed by experimental measurements...
In this paper, we present a design of a small size second order band pass coupled resonator filters by using finite difference time domain method (FDTD). The filter consists of defected ground structure resonators (DGSs). The reduction of the size of the filter is achieved by loading the resonator with lumped capacitor. The insertion of lumped capacitor within resonator increases the effective capacitance,...
The paper presents the design of Interdigital Band Pass Filter (IBPF) for WLAN applications at center frequency 2.45GHz. It was designed using a 3D EM simulation tool and fabricated on substrate Ferro A6S by using in-house process of Low Temperature Co-fired Ceramic (LTCC) technology. Simulated and measured results were presented. The pass band insertion loss of the filter was measured to be -1.66dB...
In this paper, we present a small size third order band pass coupled resonator filter. The filter consists of defected ground structure resonators (DGSs). The reduction of the size is achieved by loading the resonator with lumped capacitor. The insertion of lumped capacitor within resonator increases the effective capacitance and reduces the resonant frequency, so the dimensions of the filter will...
This paper presents a top-down design of the microstrip coupled line Band pass filter (BPF) embedded in low temperature co-fired ceramic (LTCC) for 5 GHz wireless LAN applications. It includes the design, simulation, fabrication and measurements. The filter circuit was designed and simulated based on Agilent Advanced Automation (ADS2005A) software. Then, the physical dimensions of components and the...
A top-down detail design of a 5 GHz micro strip coupled line band pass filter in LTCC is presented in this paper. LTCC, which stands for low temperature co-fired ceramic is especially used for wireless and high-frequency applications. Now, the importance of LTCC is becoming more prominent in views of the fact a lot organizations has been funding R&D-projects regarding this new technology that...
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