在高温超导YBa2 Cu3O7-δ颗粒膜上刻成 0 .3× 0 .1mm2 的桥型样品 ,测量了它在 8mm微波辐照下的响应特性 .实验结果表明 :通过优化器件参数 ,响应率可达 10 4 V/W ,在T =70K时噪声等效功率为 5.2× 10 - 1 4 W /Hz1 / 2 ,当入射微波斩波频率为 50 0kHz时响应时间低于 3.9× 10 - 8s . The bridge sample of 0.3 × 0.1mm2 was inscribed on the YBa2 Cu3O7-δ particle film of high temperature superconductor, and its response characteristic under 8mm microwave irradiation was measured.The experimental results show that by optimizing the device parameters, the response rate can be The noise equivalent power is 5.2 × 10 - 1 4 W / Hz1 / 2 at T = 70K, and the response time is less than 3.9 × 10 - 8s when the incident microwave chopping frequency is 50 0kHz.