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cascade Class Reference

class cascade is a special type of composite circuit which can only be a 2-port or a 1-port, and can be built only from 2-ports and/or a single 1-port. More...

#include <circuit.h>

Inheritance diagram for cascade::

List of all members.

Public Methods
	cascade ()
	The default constructor initializes with a 2-port branch equivalent. More...
int	size ()
	The number of ports this device has. More...
const nport::data_info&	get_data_info ()
	Noise and source status. More...
cascade&	add (nport &n)
	This is the main function that the user calls to build up the cascade of devices. More...
cascade&	a (nport &n)
	A shorthand alias for add(). More...
Public Attributes
parameter	Temp
	The temperature of this circuit. More...
Private Methods
void	recalc ()
	The function for calculating sdata. More...
void	recalc_S ()
	If the following function is implemented, it should only calculate the S matrix and B vector parts of data, leaving the C matrix part stale. More...
Private Attributes
nport*	last
	The last component added. More...
circuit	c
	The actual circuit. More...

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Detailed Description

class cascade is a special type of composite circuit which can only be a 2-port or a 1-port, and can be built only from 2-ports and/or a single 1-port.

It implements a simple cascade connection of its component devices. Port 1 of the cascade is assigned to port 1 of the first device added; port 2 of the cascade to port 2 of the last device added, unless the last device added is a 1-port, in which case the cascade is also a 1-port. As long as no 1-port is added to the cascade, 2-ports may continue to be added; adding a 1-port at any time makes the cascade a 1-port and no further devices may be added. At creation, cascade behaves as a 2-port branch.

Definition at line 224 of file circuit.h.

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Constructor & Destructor Documentation

cascade::cascade ( )

The default constructor initializes with a 2-port branch equivalent. Definition at line 348 of file circuit.cc.

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Member Function Documentation

cascade & cascade::a ( nport & n ) [inline]

A shorthand alias for add(). Parameters: n   the next device to add to the cascade Definition at line 265 of file circuit.h.

cascade & cascade::add ( nport & n )

This is the main function that the user calls to build up the cascade of devices. Parameters: n   the next device to add to the cascade Definition at line 388 of file circuit.cc. Referenced by a().

const nport::data_info & cascade::get_data_info ( ) [virtual]

Noise and source status. Returns: info about the sdata of the device Reimplemented from nport. Definition at line 377 of file circuit.cc.

void cascade::recalc ( ) [private, virtual]

The function for calculating sdata. recalc() should do the following: (1) Read device::f, device::Z0, and, by default, device::T to get the operating conditions for the response calculation. (2) Calculate the S, C, and B matrix values and store them to nport::data, with all values normalized using device::Z0. (3) Store the normalizing impedance to nport::data by calling data.set_znorm(). Reimplemented from nport. Definition at line 357 of file circuit.cc.

void cascade::recalc_S ( ) [private, virtual]

If the following function is implemented, it should only calculate the S matrix and B vector parts of data, leaving the C matrix part stale. Reimplemented from nport. Definition at line 367 of file circuit.cc.

int cascade::size ( ) [inline, virtual]

The number of ports this device has. Returns: the number of ports Reimplemented from data_ptr_nport. Definition at line 243 of file circuit.h.

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Member Data Documentation

parameter cascade::Temp

The temperature of this circuit. The default shadows device::T. The temperature is passed to subelements using device::T, so any subelement may override with its own explicit Temp value Definition at line 233 of file circuit.h.

circuit cascade::c [private]

The actual circuit. Definition at line 273 of file circuit.h.

nport * cascade::last [private]

The last component added. Definition at line 270 of file circuit.h.

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The documentation for this class was generated from the following files:

• circuit.h
• circuit.cc

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