1.CST建模，得到标准四端口S参数 在CST建立模型，一根线的特性阻抗为50Ω，另一根线的阻抗为75Ω 图1CST模型图 2.导出标准S参数 Post-Processing->Import/Export->TOUCHSTONE,导出的文件为.s4p格式的文件，实际上可以利用CST的后处理Result Templates Tools模块进行计算我们仅仅以SDD11为例子，
Discreteport1和Discreteport2在同一根线上,Discreteport3和Discrete port4在同一根线上,因此Discreteport1和Discreteport2要么同时为正,接入巴伦“+”,要么同时为负接入balun“-”。同理因此Discrete port3和Discreteport4也是这么理解。 图5ADS仿真得到的S11也就是SDD11 好了,再来解释一下,S13的含义,S13为SDC11...
差分转单端处理,差分线100 Ohms: Balun的d端口要和100Ohm相连… ADS看频谱 时域转频域-FFT 瞬态仿真原理图如下: 仿真结果如上:两个端口差分输出,输出的频谱看到能量基本集中在9GHz以前(下降10dB,后面的能量很低)… 阅读全文 S21 1.电感变大时,虽然带宽变小,但peaking变大,高频分量衰减变小; 2.根据需要平...
64 Submit Documentation Feedback Copyright © 2012–2014, Texas Instruments Incorporated Product Folder Links: ADS42JB49 ADS42JB69 www.ti.com 12.2 Layout Example ADS42JB49, ADS42JB69 SLAS900F – OCTOBER 2012 – REVISED DECEMBER 2014 LMK04828 Channel B input ADS42JBxx Channel A input Balun ...
Note: In Figure 1 the input signal is shown being applied to RF connector J3. The trace from J3 goes to the balun where the single-ended signal is converted to differential. On some board revisions the trace to the balun comes from RF connector J2. In these cases, the input signal must...
I strung a wire loop antenna at the end of the room that has the outside wall. Using an MFJ-250b I was able to tune it and listen around on the two radios. I did remove the ladder line and added a balun. This last summer I made several contacts with the HB-1B and I very mu...