In this paper, the bandwidth enhancement and improvement of directivity of a composite conical structure in the presence of a circular loop antenna are investigated. In terms of matching properties, the isolated loop has very poor return loss. The improvement of the matching qualities in the presence of a composite conical structure is due to the mutual coupling between the loop and the composite conical structure. A narrow bandwidth conducting cone was previously used to improve the poor matching in return loss characteristics of an isolated loop antenna. The present technique achieved 17.77% –10 dB bandwidth compared with 6.56% –10 dB bandwidth in a conducting conical antenna, producing a 171.00% –10 dB bandwidth enhancement without impacting cross-polarization and improvement in directivity as well. By varying several parameters, including wire diameter, loop radius, cylinder radius, and height of the cylinder from the bottom of the cone, we have been able to observe the return loss, radiation pattern, –10 dB bandwidth, and directivity. We have contrasted the outcomes of our simulations with the measured ones.