It was found that when selecting the QW or L-pad attenuators and marking the option to include the S-parameter analysis block, the impedance of the output term was not Z0 if Z0 != 50
This happened because these attenuator topologies were missing from slotSetText_Zin( double val ). This function calls the calculation function in order to update the power dissipation data whenever the user changes Z0.
The "About Qt" message was not properly connected. As a consequence, when the user went to "Help-> About Qt..." nothing showed up.
This commit is intended to fix this by connecting the menu with the handler as it's done in the filter design tool
A custom subclass of QDoubleSpinBox was created to accept "." and "," as decimal separators.
DoubleVal validator was deleted from the code as it has not being used.
The shunt resistor attenuator is unmatched at both ports. The input and output impedance is shown in a box.
The derivation of the design equations will be provided separately in the pull request
The series resistor attenuator is unmatched at both ports. The input and output impedance is shown in a box.
The derivation of the design equations will be provided separately in the pull request
The output of the L-pad attenuators is unmatched. The output impedance is shown in a box.
The derivation of the design equations will be provided separately in the pull request
The output of the L-pad attenuator is unmatched. The output impedance is shown in a QLineEdit.
The output impedance is shown in a box. The derivation of the design equations will be provided separately in the pull request
This commits adds the capability to design quarter-wave series and shunt attenuators
A feature for synthesizing transmission lines with lumped components (lowpass form) is also added.
Reference:
The PIN diode circuit designer's handbook. W.E. Doherty, Jr., R.D. Joos, Microsemi Corp., 1998
Add QW series and QW shunt attenuators
This commits adds the capability to design quarter-wave series and shunt attenuators
A feature for synthesizing transmission lines with lumped components (lowpass form) is also added.
Reference:
The PIN diode circuit designer's handbook. W.E. Doherty, Jr., R.D. Joos, Microsemi Corp., 1998
The synthesis fails for certain Z0/att ratios in Tee and Pi type attenuators. However, success is guaranteed for the rest of attenuator types. In this sense, it makes sense to warn (in red) whenever the synthesis fails and remove the "Success" message.
The QLineEdits used for the design input were replaced by QSpinBoxes. It seems to be more convenient and fluid since now the user only need to move the mouse wheel over the input to see how the resistor values move
It was added a checkbox in the qucsatenuattor UI in order to let the user to attach a SP simulation component to the attenuator circuit.
Resistive attenuators are wideband circuits so the GUI doesn't ask for a frequency sweep.
The tool sets the SP sweep to 50MHz-3GHz. If needed, the user can change that before running the simulation.
Compiled without Qt3Support.
Testes on a Mac. I'm not sure about the menubar space.
It also doens't update the layoutsize when changing from
Bridged Tee to Tee, only when go up to Pi again.
* qucs-attenuator/qucsattenuator.cpp (slotSetText_Zin):
Synchronized Zout and Zin when specifying a bridged-tee.
* qucs-attenuator/attenuatorfunc.cpp (Calc): Fixed computation
routine for bridged-tee topology.
