In this paper, we present a linear to circular polarization converter integrated in a concrete structure to eliminate signal transmission problem originated from the concrete buildings in microwave regime. Two polarization converter samples and a control specimen made by traditional concrete are designed and their signal transmission responses are compared experimentally. Axial ratio values which can be calculated by the ratio between the co-polar transmission and cross-polar transmission results of the proposed samples are below 3 dB and highly sufficient for linear to circular polarization conversion activity. The operating frequency for the proposed sample 1 is between 6 and 6.5 GHz with 500 MHz of bandwidth. The proposed sample 2 exhibits dual-band operation covering frequency bands, 4.58–5.13 and 6.0–6.4 GHz with bandwidths of 550 and 400 MHz, respectively. Operating frequencies of the samples are in the WIMAX frequency bands. In addition, the liner to circular polarization converter design integrated to concrete has a huge potential to improve reflection and directivity parameters of many antennas if it is considered as a radome.

在本文中，我们提出了一种集成在混凝土结构中的线性至圆极化转换器，以消除微波条件下混凝土建筑物产生的信号传输问题。设计了两个由传统混凝土制成的偏振转换器样品和一个对照样品，并通过实验比较了它们的信号传输响应。可以通过所提出样本的同极传输和交叉极传输结果之间的比率计算的轴比值低于3 dB，并且对于线性到圆极化转换活动来说是非常足够的。建议样本 1 的工作频率在 6 和 6.5 GHz 之间，带宽为 500 MHz。建议的样本 2 展示了双频段操作，覆盖了 4.58–5.13 和 6.0–6.4 GHz 频段，带宽为 550 和 400 MHz，分别。样本的工作频率在 WIMAX 频段内。此外，集成到混凝土中的线性圆极化转换器设计如果被视为天线罩，则具有改善许多天线的反射和方向性参数的巨大潜力。