摘要
从理论上指出原型落入式微带结型环行器（或隔离器）性能不佳的原因在于第二环行条件不满足，提出通过调整中心结的高度和匹配段长度可以改善阻抗匹配状况，提高器件的性能。据此制作了一个Ｋａ频段落入式微带隔离器，在２．０ＧＨｚ绝对带宽内（３０．５ＧＨｚ～３２．５ＧＨｚ）器件的插损小于１．０ｄＢ。
It is pointed out theoretically that the prototype drop in microstrip junction circulators (or isolators) without excellent operating characteristics are due to unsatisfaction of the second circulation condition.It is proposed that the impedance matching condition can be improved by changing the height of the centre junction and length of matching sections,which lead to the improvement of the operating characteristics of the devices.A drop in isolator that operates in Ka band is obtained,which exhibits less than 1 dB insertion loss and greater than 20 dB isolation in 2.0 GHz absolute bandwidth(30.5～32.5 GHz).
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
1997年第3期314-317,共4页
Journal of University of Electronic Science and Technology of China
基金
国防科工委基金
关键词
微带隔离器
落入式
毫米波器件
KA频段
环行器
microstrip isolators
drop in
millimeter devices
Ka band
impedance
matching
