变频损耗 meaning in English
converter conversion loss
frequency conversion loss
loss due to frequency conversion
Examples
- The results showed conversion loss less than 11 . 2db and image rejection ratio more than 20db over 4ghz rf bandwidth , when if is 70 mhz fixed
通过测试,当中频固定在70mhz ,在射频大于4ghz带宽内,变频损耗小于11 . 2db ,镜频抑制度大于20db 。 - The analysis of harmonic balance and transpositional matrix is used to get the formula of conversion loss in the later according to equivalent circuit design the whole circuit
详细介绍了二极管的混频原理,以及常见的二极管混频器电路的实现形式。采用谐波平衡分析方法和变换矩阵分析方法,推导出平衡混频器变频损耗公式。 - The design process consisted of computer design by circuit simulation software integrate with electromagnetic simulation software , fabrication of microstrip bpf 、 lpf 、 the match circuits , cavity and test . when rf frequency is 91 ~ 97ghz , lo frequency is 47ghz , power is 10 dbm . the best conversion loss of the 2 and 4 sub - harmonic mixer is 13 . 5 db and 23 . 5db which is shown in the test
实测表明,在本振为47ghz ,功率10dbm ,测试射频带宽为91ghz 97ghz时,二次与四次分谐波混频器变频损耗最优处分别为12 . 7db和23db 。最后对实验结果进行分析并提出改进措施。 - In active section , in order to meet performance of out put power above 10dbm , the power amplifier module of ka - band is fabricated by using hmc283 to achieve the 14db conversion gain . there are five parts that include of waveguide - to - microstrip ? mixer ? filter ? power amplifier and waveguide - to - microstrip . input signal ' s power is 10dbm , after it pass waveguide - to - microstrip , it ' s frequency is escalate from 30ghz to 35ghz
该组件由五个部分组成：功率为10dbm信号经过波导? ?微带过渡，然后混频，滤波将30ghz提高到35ghz滤除不需要的谐波镜频以及三阶交调信号，为了弥补混频滤波的变频损耗，加一级功率放大器，此放大器采用hittle公司hmc283芯片，此上变频放大组件完成了上变频?滤波?放大功能。