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A novel low cost tunable bandstop filter with compact embedded C-shaped slot notch structure section is presented in this paper. The C-shaped slot is obtained by etch on the microstrip line which makes the notch filter in small size. The tunability is achieved by change the capacitance of varactors diodes which are equipped on the C-shaped slot section. The center frequency of the filter varies from...
A modified lumped-network finite-difference time-domain (LN-FDTD) method is proposed. This method extracts the – relations of a circuit from its state equations, which are easier to obtain than the traditional -matrix. Then, these – relations are incorporated into FDTD iteration to achieve the field and circuit joint computation. Furthermore, the current mismatching effect has been successfully...
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