Electromagnetic interferences is known as the main concept regarding the radar systems which are widely used by the army in order to identify or detect any targets. On the other hand, considering the security problems faced in military area have raised significant attention toward achieving the camouflage effects against the electromagnetic wages. Reducing the radar cross section is a widely acceptable solution for this problem. The research of Radar Cross Section (RCS) of simple and complex objects is decisively important to identify targets in military areas in particular (such as aircraft, missiles, rockets, ships and other objects) with the purpose of improving or reducing the structures’ radar visibility in various frequency ranges. Among different methods employed for this aim, textile technology has found its effective potential to produce either simple or complex constructions with the capability of radar cross section. Textiles due to their versatility and structural diversity as well as their cost-effective production process, have attracted the numerous researchers’ attentions in this case. Following the previous research, this study have been focused on preparing the warp knitted structures coated with polyaniline. Using the warp knitting technology, net-shape structures with the ability to absorb the electromagnetic radiation can be easily provided. As different geometrical forms of the structures significantly affect the radar cross section and electromagnetic absorbency, different knit pattern varied in mesh sizes were considered in this study. Polyaniline as a conductive polymer was used for coating the knitted structures in order to change their electromagnetic absorbency and reflectance properties which in turn makes the samples to be stealthy and practically invisible at some frequency ranges. By using microwave equipment and network analyzer, the effects of fabrics geometry and the presence of conductive-polymer-based polyaniline on the absorbency and reflectance properties of warp-knitted polyaniline-coated samples against the electromagnetic waves, were analyzed in bandwidth of 8-12 GHz. Computer Simulation Technology (CST) which is commonly used in numerical simulation of electromagnetic fields, design of antennas and high-frequency circuits, was also employed in order to optimize the measurement costs and reduce the number of required tests., Both absorption and reflection coefficients of the samples were experimentally measured and then compared with data simulated though the CST technique. The results revealed that the amount of reflected waves corresponding to the produced warp-knitted polyaniline-coated samples significantly decreases as the mesh sizes increases. In the case of electromagnetic waves absorption, it was seen that the samples absorbency is relatively low both experimentally and theoretically. The smaller mesh-size samples resulted in more wave losses and higher absorbency. According to the statistical analysis, fabrics structural geometry in term of the mesh size significantly affects their electromagnetic radiation reflectance and improve the radar cross section effects.