This paper presents a miniaturized"stepped impedance" patch microstrip antenna
the investigated High Temperature Superconductor(HTS) microstrip antenna was fabricted from YBa2Cu3O7-δ(YBCO) thin film exiptaxially grown on LaAlO3 substrate
the radiation efficiency of HTS antenna is 9. 19 times of the Au antenna for comparsion.A automatic measurement system for HTS antenna was constructed
thorough experiment study was made
a lot of significance experimental datas were obtained and engineering experience was gained
it is shown that this automatic measurement system satisfies the special requirements of HTS antenna measurement very well. A invention patent was got for HTS antenna measurement apparatus.