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In this paper, a novel tunable microwave bandpass filter (BPF) based on liquid crystal (LC) technology is presented. For ease of supplying ac voltages, the proposed filter is achieved by particular configuration schemes with low cost inverted-microstrip structure. Two open-circuited stubs are placed inside a meander loop resonator so as to form quarter wavelength resonators, which is good to keep...
In this paper, a novel tunable microwave bandstop filter (BSF) based on LC technology is proposed. A meander loop resonator with two open-circuited stubs located into the input and output ports are used in the design. Due to two additional open-circuited stubs, the proposed filter has better rejection in the stopband performance without increasing the circuit size. For ease of supplying ac voltages,...
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