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本帖最后由 Xuxingfu 于 2012-6-9 19:44 编辑 2 H! R& d* ^6 @! i
3 O+ W9 J3 z, c# Q/ B7 z资用功率增益圆：
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Generates an available gain circle.& B/ ?' J$ v% m& N3 W8 H# S
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语法规则Syntax：
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7 i, H/ W6 y$ W( B( o9 ty = ga_circle(S, gain, numOfPts, numCircles, gainStep)2 K; F! E- N/ u
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Default value for gain is min(max_gain(S)) - {1, 2, 3}
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Examples, q( M% p' Q/ S z- X8 j
circleData = ga_circle(S, 2, 51)! r3 E, i1 G* f3 F2 _3 P0 ]
circleData = ga_circle(S, {2, 3, 4}, 51) return the points on the circle(s).9 f/ O: ^& y2 \' B y2 u0 ?8 t
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}4 g$ U$ A' W h; e. K" s
circleData = ga_circle(S, , , 2, 1.0) return the points on the circle(s) for 2 circles at maxGain - {0,1.0}
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+ S, R% E5 Z z2 _5 W$ k7 T3 ~+ P. L此功能用于在小信号S参数模拟。( j+ {; _& F% V
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。
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! T# ]0 x! f A7 bThis function is used in Small-signal S-parameter simulations.! n% l+ k& @$ k- s2 i" R' o& J
The 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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; `/ O/ f+ f. l0 S" nA 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.
1 o- H# o T) wIf 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. : s {! X0 [* B/ ~3 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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" r& I* _% k4 G5 m+ s圆方程：7 b$ N2 b5 a& \* ^( Q; x& k' W
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发表于 2012-3-24 10:45
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发表于 2012-3-24 13:55
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