Читать книгу Electrical and Electronic Devices, Circuits, and Materials - Группа авторов - Страница 59

The hairpin bandpass filter offers compactness and good return loss. The proposed work of a hairpin filter with fractal DGS shifts the resonant frequency to lower frequencies, which reduces the size of the filter. Tunability along with hexagonal fractal DGS is achieved by using variable capacitance (varactor diode) inserted in fractal DGS. The simulation work shows that the proposed filter has a compact size and much less insertion loss.