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本帖最后由 Xuxingfu 于 2012-6-9 19:44 编辑 3 T8 Q K5 g+ D7 k. x) p
/ k' C! U5 g) C! V+ x* A; L资用功率增益圆： T5 b# x8 [: v5 ]+ L
ga_circle()
4 I7 @& I" ]" cGenerates an available gain circle.$ C5 F, k% `& K# R5 K
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语法规则Syntax：
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$ P! D7 i( D2 A' B' v4 Q) `y = ga_circle(S, gain, numOfPts, numCircles, gainStep)/ g& M/ N* C( y* ~+ v- q* |* J
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$ z1 }) s5 c( U" q. q J C. bDefault value for gain is min(max_gain(S)) - {1, 2, 3}
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5 _' _9 I7 J6 w1 u6 C6 a) p) XExamples, E, V5 m; |/ l; F+ f3 l* \
circleData = ga_circle(S, 2, 51)
* _' }8 a2 C( WcircleData = ga_circle(S, {2, 3, 4}, 51) return the points on the circle(s).
7 M. `+ A5 [% P5 b# d/ qcircleData = ga_circle(S, , 51, 5, 0.5) return the points on the circle(s) for 5 circles at maxGain - {0,0.5,1.0,1.5,2.0}
+ M3 c$ C( u$ \$ ]8 R3 {9 ]: UcircleData = ga_circle(S, , , 2, 1.0) return the points on the circle(s) for 2 circles at maxGain - {0,1.0}, ~* o. j7 ^5 \3 U7 W
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此功能用于在小信号S参数模拟。: W1 v% f" _- W+ X# ]
函数生成常数资用增益圆源不匹配造成的，圆的定义在指定的增益源反射系数点。5 S/ t) Q+ ~+ r6 c( B* e
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This function is used in Small-signal S-parameter simulations.
, P5 r0 M$ K$ W1 `; V8 kThe function generates the constant available-gain circle resulting from a source mismatch. The circle is defined by the loci of the source-reflection coefficients resulting in the specified gain.
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A gain circle is created for each value of the swept variable(s). Multiple gain values can be specified for a scattering parameter that has dimension less than four. This measurement is supported for 2-port networks only.
# \# L5 g, k3 E8 H2 `If gain and numCircles are not specified, gain circles are drawn at min(max_gain(S)) - {0,1,2,3}. That is, gain is calculated at a loss of 0,1,2,3 dB from maxGain. , K4 I9 M5 \8 ~6 p/ ?& [0 h
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If gain is not specified and numCircles is given, then numCircles gain circles are drawn at gainStep below max_gain(). Gain is also limited by max_gain(S). That is, if gain > max_gain(S), then the circle is generated at max_gain(S).3 v9 n8 z! ] E& l
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圆方程：
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发表于 2012-3-24 10:45
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反对！
发表于 2012-3-24 13:55
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