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本帖最后由 Xuxingfu 于 2012-6-9 19:44 编辑
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资用功率增益圆：4 u t( u. y; |0 u
ga_circle() ^; ]' `, J5 x& g! O( j0 J' k
Generates an available gain circle.: p! v0 h4 g1 l- `. |* c
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语法规则Syntax：
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y = ga_circle(S, gain, numOfPts, numCircles, gainStep)" D. O L2 G/ M1 U" h
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Default value for gain is min(max_gain(S)) - {1, 2, 3}
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Examples s" _7 k& v$ F
circleData = ga_circle(S, 2, 51)
: A1 b _+ P: z- ]- rcircleData = ga_circle(S, {2, 3, 4}, 51) return the points on the circle(s).4 ]- r* Q8 J g6 `& q" j- J
circleData = 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}
5 V0 ?: B0 f; B9 d; IcircleData = ga_circle(S, , , 2, 1.0) return the points on the circle(s) for 2 circles at maxGain - {0,1.0} T' t5 k$ t8 W
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此功能用于在小信号S参数模拟。# M) v. I7 k. \6 r0 I
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。" W' e, V$ U$ w4 D! i
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This function is used in Small-signal S-parameter simulations.
2 M! n. e7 V' Z# aThe 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. ' U7 D0 h3 O8 s% C
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. 9 w' f; u3 {( l! _
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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).
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0 r8 b6 X6 R% i* @; r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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