摘要
本文设计并制作了一种微带形式W波段单平衡混频器。该混频器采用微带环形电桥结构,射频和本振信号分别从环形电桥的隔离端口由标准波导BJ-900输入,经对脊鳍线微带波导过渡输入到微带电路,中频信号通过跳线方式连接并通过一段高阻抗线引出到输出口。该电路使用两只DMK2790肖特基二极管制作在介电常数为2.2,厚度为0.127mm的RT/Duriod5880基片上,在固定本振94.5GHz,射频90GHz到98GHz范围内,变频损耗小于14.5dB。
A W-Band balanced mixer using microstrip rat-race hybrid-ring is presented in this paper.The radio frequency(RF)signal and local oscillator(LO)signal pass through the antipodal finline waveguide-to-microstrip transitions from the standard waveguide BJ-900 to the microstrip circuit by the isolated ports of the rat-race ring.The intermediate frequency(IF)is combined by jumper and taken to the output port by a high impedance transmission line.The circuit is fabricated on the RT/Duriod5880 substrate with dielectric constant of 2.2,thickness of 0.127mm using two DMK2790 Schottky diodes.When the LO frequency is fixed at 94.5GHz,the conversion loss is less than 14.5dB from 90GHz to 98GHz.
出处
《微波学报》
CSCD
北大核心
2010年第S1期329-332,共4页
Journal of Microwaves
