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史密斯圆图软件V3.1使用说明书.pdf

发布时间：2022-05-29 发布人：admin 分类：说明书 资料大小：2.41M 资料格式：pdf 举报 版权申诉
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    What’sWhat’s NewNew What sWhat s NewNew May 2010 Smith V3.10 Smith-Chart New Features:  Sweep versus frequency or datapoints  Serial transmission line with loss  Export datapoint and circle info to ASCII-file for  Export datapoint and circle info to ASCII file for post-processing in spreadsheets or math software S-Plot S-Plot New Features:  Linear or logarithmic frequency axis  cursor readout at gain and return loss graphs. System requirements: Windows XP, Windows Vista, Windows 7 .NET Framework 3.5 www.fritz.dellsperger.net
    Sweeps Sweeps Sweeps Sweeps There are two possibilities to sweep a network:  Frequency sweep  Datapoint Sweep Use menu “Extras”, “Sweep” (“Remove Sweep”) or button in toolbox to invoke or clear a sweep. Before doing a sweep design a network starting from one datapoint For datapoint sweep all Before doing a sweep design a network starting from one datapoint. For datapoint sweep all datapoints must be input before starting a sweep.
    Frequency sweep Frequency Frequency Frequency sweep sweep sweep h hi f Example: At 400 MHz match 25  to 50 using a 6 element lowpass. Use a frequency sweep from 300 MH 300 MHz to 800 MHz to find out the matching performance (VSWR) for this network versus the frequency range from 300 MHz to 800 MHz. 800 MH fi d (VSWR) f hi k  After invoke of a sweep, edit element values to watch changes of swept points.
    Datapoint sweep Datapoint Datapoint Datapoint sweep sweep sweep Example: An antenna has different impedances at different frequencies. This datapoints are loaded from a S11-file. Match the antenna at 1.9 GHz to 50 using a 50 transmission line and a S11 fil d parallel capacitor. Use a datapoint sweep to find out the matching performance (VSWR) for this network for all datapoints. M h h 50  1 9 GH i i 50  i li  After invoke of a sweep, edit element values to watch changes of swept points.
    Serial Serial transmission Serial Serial transmission transmission line transmission line line withwith loss line withwith loss loss loss Example: An antenna has an impedance of (10-j35) at 450 MHz. What impedance do you see, if you connect the antenna with a coaxial cable that has an electrical length of 2.8and an attenuation of 1 dB/m? i l bl h h h f 2 8 d h i h l i l l
    Export Export datadata Export Export datadata Export datapoints or circle data to an ASCII-file for post-processing in spreadsheets or math software. Delimiter format: None, semicolon or comma. software. Delimiter format: None, semicolon or comma.  Select “Export” in menu “File”. Data file examples: Export datpoints Frequency[Hz] Start DP Point R[Ohm] X[Ohm] Q Frequency[Hz] Start DP Point R[Ohm] true; 1; false; 2; false; 3; false; 4; false; 5; false; false; 6; 6; false; 7; Export circles G1;input plane const. gain circle;12.94;12.94;0.12;-149.00;0.11;59.40;3.76;78.90;0.41;-54.50;2.0GHz; G2;input plane const. gain circle;12.50;12.94;0.12;-149.00;0.11;59.40;3.76;78.90;0.41;-54.50;2.0GHz; G3;input plane const. gain circle;12.00;12.94;0.12;-149.00;0.11;59.40;3.76;78.90;0.41;-54.50;2.0GHz; N1;3.60;3.60;0.42;39.10;0.98;2.0GHz; N2;3.70;3.60;0.42;39.10;0.98;2.0GHz; N3;3.80;3.60;0.42;39.10;0.98;2.0GHz; N4;3.90;3.60;0.42;39.10;0.98;2.0GHz; N5;4.00;3.60;0.42;39.10;0.98;2.0GHz; S1;Input plane stability circle;stable outside;1.17;0.12;-149.00;0.11;59.40;3.76;78.90;0.41;-54.50;2.0GHz; S2;Output plane stability circle;stable outside;1 17;0 12; 149 00;0 11;59 40;3 76;78 90;0 41; 54 50;2 0GHz; S2;Output plane stability circle;stable outside;1.17;0.12;-149.00;0.11;59.40;3.76;78.90;0.41;-54.50;2.0GHz; 0.600; 450000000.000 450000000.000 450000000.000 450000000.000 450000000.000 450000000.000 450000000.000 -12.000; 12.033; 0.602; 1.281; 0.047; 16.280; 0.599; 1.679; 0.046; 21.754; 0.590; 21.754; 0.590; 0.006; 0.000; 450000000.000 X[Ohm] Q 20.000; 20.000; 27.180; 27.180; 36.855; 36.855; 36.855; 49.695; For meaning of values see window “Circles” Circles
    SS--PlotPlot SS--PlotPlot New Gain and Return Loss graphs
    SS--PlotPlot SS--PlotPlot The selected line in window “Gain table” highlights the corresponding datapoint in all graphs.
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