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This work applies aperture-coupled resonators (ACRs) to realize a high-selectivity frequency-selective surface (FSS) at 60 GHz. In a generic ACR FSS, one or both of electrical and magnetic coupling paths can, theoretically, be constructed by appropriately designing coupling apertures. To investigate the operating principle of the ACR FSS, an equivalent-circuit model is first given and analyzed using...
this paper presents a novel distributed generation (DG) control strategy under both distorted and unbalanced conditions. Actually the power quality of microgrid bus and the point of common coupling are the main concerns due to the determination of high-quality power energy to the main grid and sensitive loads connected to microgrid bus. To tackle this problem, three control schemes based on PIR cascaded...
Aperture-coupled resonators (ACRs) are applied to realize high frequency-selectivity bandpass frequency selective surfaces (FSSs). In the ACR FSS structures, identical patch resonators on the top and bottom layers are coupled through coupling apertures etched on a conducting plane in between. Multiple coupling paths between the resonators result in two transmission zeros on either side of the narrow...
We present a numerical simulation of frequency-agile terahertz metamaterials which incorporate semiconducting material as an integral part of the resonant elements to split ring resonator (SSR). The resonance frequency of the metamaterial can be dynamical tune through photoexcitation. The modification of capacitance at the split gap by photoexcitation results in red-shifting of metamaterial resonance...
Multi-mode filter is advantageous to the miniaturization of device. Because of symmetry, triangular structure has dual-mode characteristics. Some people have made a dual-mode filter with a triangular support structure. Through simulating triangle resonator, We found that the first two-mode distributed on the border of resonator and the third mode is located in the center of the triangle. We can load...
An improved structure of rectangular waveguide band-pass filter with harmonic suppression is proposed. The filter consists of cascade resonant cavities with coupling provided by irises. This article mainly introduced the principle of capacitance loading restrain parasitic passband, the stop-band was successfully pushed to a two octaves frequency range. The results show that the designed rectangular...
Multi-mode filter is advantageous to the miniaturization of device. Because of symmetry, triangular structure has dual-mode characteristics. Some people have made a dual-mode filter with a triangular support structure. Through simulating triangle resonator, We found that the first two-mode distributed on the border of resonator and the third mode is located in the center of the triangle. We can load...
An improved structure of rectangular waveguide band-pass filter with harmonic suppression is proposed. The filter consists of cascade resonant cavities with coupling provided by irises. This article mainly introduced the principle of capacitance loading restrain parasitic passband, the stop-band was successfully pushed to a two octaves frequency range. The results show that the designed rectangular...
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