【摘要】 文中介绍在小型脉冲管制冷机的基础上设计制作的混频系统 ,利用高温超导双晶结作为混频元件 ,实现了毫米波段的谐波混频 ,并对小型脉冲管制冷机作为高温超导体微波器件的冷源做了一定的研究。说明小型脉冲管制冷机在高温超导器件走向实用方面大有潜力。更多还原

【Abstract】 A frequency mixer including microwave coupling and intermediate frequency (IF) measurement arrangements is designed. In lieu of liquid nitrogen, a pulse tube cryocooler is used to cool the whole system. With YBa 2Cu 3Q 7/Yttrium stabilized zirconia (YBCO/YSZ) bicrystal Josephson junction as the mixing element, 36th harmonic frequency mixing at 8mm waveband is obtained.更多还原