Abstract
Band pass filters are widely used in wireless transmitters and receivers. A compact Quad band pass filter with stub loaded technique has been designed in this paper. HFSS (High Frequency structure simulator) software is used for the designing purpose. By the help of this technique four (quad) pass band pass filter has attained. The filter has an insertion loss of 0.8663, 8.1760, 3.0527, 3.8269 and located at 0.7, 1.31, 1.9, 4.2 GHz. The calculated return loss are 19.5, 9.04, 15.8, 19.7 dB.
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