Parametric study of stub loaded loop resonator

In the current trends of RF and microwave developments, it became increasingly important to remove unwanted signals so that the information in the signal is clear. A filter does this and the paper proposes a compact stub loaded band stop filter which can be turned for a range of frequencies without changing the foot print of the filter. An edge coupled stub loaded band stop filter with cover type feed is presented here. For validation of these concepts, a band stop filter operating in S band has been designed, simulated, fabricated and tested.