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
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.
This commit is intented to produce more human-readable schematics
Before this commit the attenuator schematics were too compact and it was difficult (or even impossible) to read the resistor values at first sight.
Also, the resistor values were rounded to 1 decimal place as it is more than enough for actual attenuator design.
* 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.
