【摘要】 为了加强微波信号与Ｊｏｓｅｐｈｓｏｎ结的耦合，我们设计制作了平面对数周期和等角螺旋天线．在Ｊｏｐｈｓｏｎ结上接有天线和不接天线时，分别测量零电压超流被微波功率压缩的情况，结果表明，该天线有效地提高了信号源与Ｊｏｓｈｓｏｎ结的耦合程度．这一方法可以应用到毫米波与亚毫米波段的谐波混频器上．更多还原

【Abstract】 Abstract To enhance the coupling between a Josephson junction and microwave source, we desisned and fabticated planar log-periodic or spiral antennas. By measuring the microwave suppression of the junction’s zerco-vohage supercurre with or without the antenna, we found significant improvem of the coupling. This technique can be used in harmonic mixe at mm and sub-mm waveands.更多还原