主要内容

rfckt.seriesrlc

系列RLC组件

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Description

Use the系列Rlcclass to represent a component as a resistor, inductor, and capacitor connected in series.

串联RLC网络对象是一个2端口网络，如以下电路图所示。

2-port series RLC network

Creation

Syntax

h = rfckt.seriesrlc
h = rfckt.seriesrlc('R',Rvalue,'L',Lvalue,'C',Cvalue)

Description

example

h = rfckt.seriesrlcreturns a series RLC network object whose properties all have their default values. The default object is equivalent to a pass-through 2-port network, i.e., the resistor, inductor, and capacitor are each replaced by a short circuit.

h = rfckt.seriesrlc('R',Rvalue,'L',Lvalue,'C',Cvalue)sets properties using one or more name-value pairs. You can specify multiple name-value pairs. Enclose each property name in a quote

Properties

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计算的S-参数，噪声图，OIP3和组延迟值, specified as rfdata.data object.分析结果is a read-only property. For more information refer,算法.

Data Types:function_handle

Resistance value, specified as a positive scalar in ohms. The default value is0.

Data Types:double

Capacitance value, specified as a positive scalar in farads. The default value is'inf'.

Data Types:double

电感值, specified as a positive scalar in henries. The default value is0.

Data Types:double

对象名称, specified as a1-by-N字符阵列。Nameis a read-only property.

Data Types:char

数量的端口,specified as a positive integer.nportt is a read-only property. The default value is2.

Data Types:double

Object Functions

analyze Analyze RFCKT object in frequency domain
calculate Calculate specified parameters for rfckt objects or rfdata objects
circle Draw circles on Smith Chart
extract Extract specified network parameters from rfckt object or data object
ListFormat 列出指定电路对象参数的有效格式
ListParam 列出指定电路对象的有效参数
loglog Plot specified circuit object parameters using log-log scale
plot X-Y平面上的绘图电路对象参数
plotyy Plot parameters of RF circuit or RF data on X-Y plane with two Y-axes
getop Display operating conditions
极性 Plot specified object parameters on polar coordinates
semilogx Plot RF circuit object parameters using log scale forx-轴
semilogy Plot RF circuit object parameters using log scale fory-轴
smith Plot circuit object parameters on Smith chart
write Write RF data from circuit or data object to file
getz0 Calculate characteristic impedance of RFCKT transmission line object
读 Read RF data from file to new or existing circuit or data object
恢复 Restore data to original frequencies
getop Display operating conditions
groupdelay S参数对象或RF过滤对象的组延迟或RF Toolboxcircuit object

Examples

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打开实时脚本

This example creates a series LC resonator and examines its frequency response. It first creates the circuit object and then uses the analyze method to calculate its frequency response. Finally, it plots the results - first, the magnitude in decibels (dB):

h = rfckt.seriesrlc('L',4.7e-5,'C',2.2e-10); analyze(h,logspace(4,8,1000)); plot(h,'s21','dB'）ax = gca;ax.xscale ='log';

Figure contains an axes object. The axes object contains an object of type line. This object represents S_{21}.

The example then plots the phase, in degrees:

图图（h，'s21','angle'）ax = gca;ax.xscale ='log';

Figure contains an axes object. The axes object contains an object of type line. This object represents S_{21}.

算法

Theanalyze方法计算分析property using the data stored in therfckt.seriesrlcobject properties by first calculating the ABCD-parameters for the circuit, and then converting the ABCD-parameters to S-parameters using theabcd2s功能。对于此电路，a = 1，b = z，c = 0和d = 1，其中

Z = − L C ω 2 + j R C ω + 1 j C ω

和ω= 2πf.

Theanalyze方法使用S-参数来计算在指定的频率下的组延迟值analyze输入参数freq, as described in theanalyze参考页。

参考

[1] Ludwig, Reinhold and Pavel Bretchko,RF Circuit Design: Theory and Applications，Prentice-Hall，2000年。

Version History

Introduced in R2009a

See Also

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