各向異性襯底上的高溫超導(dǎo)( HTS)微帶天線

分析了各向異性襯底上的高溫超導(dǎo)微帶天線特性。選取兩種典型的高溫超導(dǎo)各向異性介質(zhì)———GaNdAlO3 和SrLaAlO4 作為高溫超導(dǎo)微帶天線的襯底,采用各向異性媒質(zhì)中的譜域矩量法,對(duì)微帶天線的輸入阻抗和輻射效率進(jìn)行了計(jì)算。計(jì)算和分析結(jié)果表明,高溫超導(dǎo)襯底的各向異性特性會(huì)影響高溫超導(dǎo)微帶天線的性能,而且這種影響因襯底而異,同時(shí),襯底特性隨溫度的變化也將影響天線的性能。

The performances of HTSmicrostrip antennas on anisotrop ic substrates are studied in this paper. The input impedance and radiation efficiency of HTS microstrip antennas on two typ ical HTS anisotrop ic substrates , GaNdAlO3 and SrLaAlO4 , are calculated using the modified spectral domain momentmethod in anisotrop ic materials. The results show that the anisotrop ic p roperty of high2temperature superconductor substrates have an influence on the performances of HTSmicros2 trip antennas, which varieswith substrates, while the variation of the p roperties of HTS substrateswith the temperature also affects the performances of antennas.