Performance of a k‐band superconducting annular ring antenna

Theoretical Study of Superconducting Annular Ring Microstrip Antenna With Several Dielectric Layers

“…In order to overcome them, the uses of high temperature superconducting materials for the annular ring patch have been proposed in this work. In order to confirm the computation accuracy, our calculated resonant frequencies are compared with previously published data of Richard et al [6]. Table 2 summarizes the measured and computed resonant frequencies for different modes as a consequence; good agreement is achieved.…”

“…Microstrip antennas have some drawbacks such as narrow bandwidth and relatively low radiation efficiency [3]. In order to further improve the performance of microstrip antennas, it has been proposed to replace the conventional patch structures by high temperature superconducting (HTS) thin film [4][5][6][7][8]. Major property of superconductor is very low surface resistance compared with normal metals, such as copper, silver, and gold.…”

Theoretical investigation of an air gap tuned superconducting annular ring microstrip antenna

“…In order to reduce them, the use of high temperature superconducting material for the patch has been proposed. In order to confirm the computation accuracy, our calculated resonant frequencies are compared with previously published data of M. Richard [1]. The annular ring patch has a=1.36mm, b=2.64mm, and t=1.6µm, was fabricated using YBCO high temperature superconducting thin films.…”

“…Major property of superconductor is very low surface resistance; this property facilitates the development of microstrip antennas with better performance than conventional antennas. High temperature superconducting microstrip antennas have higher gain than their normal counterparts, but they suffer from the extremely narrow bandwidth, which severely limits their application [1].…”