Microwave filters GUI: libfreefilters.py File Reference

Classes
class	libfreefilters.CharPolys
	Characteristic polynomials class. More...

Packages
namespace	libfreefilters
	Free Filters Library to compute Butterworth, Chebyshev and Quasieliptic characteristic polynomials with minimum insertion loss.

Functions
def	libfreefilters.setGlobalVariablesLibFreeFilters
	Function to allow the GUI set values to the global variables of libcomonfunc module.
def	libfreefilters.polyOmega
	Returns for the input polynomial $P_w(\omega)$ , with $s=j\omega$ or $\omega=-js$ .
def	libfreefilters.polyCheby
	Compute Chebyshev polynomials from order 0 to N.
def	libfreefilters.polyConj
	Returns the 'Paraconjugate' of the input polynomial , with complex variable restricted to the imaginary axis, $s=j\omega$ , and therefore $s^{*} = -s$ .
def	libfreefilters.findEps
	This function finds the maximum of the function $g(s)=\|\frac{NUM(s)}{\epsilon DEN(s)}\|$ in the imaginary axis.
def	libfreefilters.rootErrors
	Report errors in the roots position for a polynomial of the form SQF(s) = F(s)F(-s) with real coefficients.
def	libfreefilters.factorization
	Factorization of polynomial SQF(s) of order 2N as a product of two polynomials, each one of order N.
def	libfreefilters.vecSort
	Sort a vector of complex numbers so that their imaginary parts is in decreasing order.
def	libfreefilters.butterworthFilter
	Compute characteristic polynomials and characteristic constants of a Butterwoth filter.
def	libfreefilters.chebyshevFilter
	Compute characteristic polynomials and characteristic constants of a Chebyshev filter.
def	libfreefilters.quasiElipticFilter
	Compute characteristic polynomials and characteristic constants of a Quasieliptic filter.

Variables
	libfreefilters.mainWindow = None
	Module global variable equal either to None or to the GUI QMainWindow class instance, containing the application main window.
	libfreefilters.importedExtraFilters = False
	Variable set to True if the non-free libextrafilters is available.

Detailed Description

Definition in file libfreefilters.py.