Title :
A symmetry device to speed up circuit simulation and stability tests
Author :
Ramberger, S. ; Merkle, T.
Author_Institution :
Fraunhofer Inst. for Appl. Solid-State Phys., Freiburg, Germany
Abstract :
A new simulation device is introduced that employs symmetry considerations in order to speed up network analysis of circuits with parallel branches. Such parallel branches are found e.g. in amplifiers with corporate combiners and push-pull oscillators. The device may be switched between two states, a symmetry and an antisymmetry state. The former is used in normal or even-mode operation and reduces the paralleled branches to a single branch, thus scaling down the time needed for the circuit set-up as much as the simulation time. The other state allows for rigorous odd-mode stability analysis when combined with a circulator stability test port. The device is easily implemented in standard circuit simulation programs.
Keywords :
amplifiers; circuit simulation; circuit stability; circuit testing; oscillators; symmetry; amplifiers; circuit set-up time; circuit simulation; circuit simulation programs; circuit simulation time; circuit stability tests; circulator stability test port; corporate combiners; device antisymmetry state; device symmetry state; even-mode operation; network analysis; normal-mode operation; odd-mode stability analysis; parallel branch circuits; paralleled branch reduction; push-pull oscillators; simulation device; symmetry considerations; symmetry device; Circuit simulation; Circuit stability; Circuit testing; Impedance; Physics; Power amplifiers; Reflection; Solid state circuits; Stability analysis; Voltage;
Conference_Titel :
Microwave Symposium Digest, 2002 IEEE MTT-S International
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-7803-7239-5
DOI :
10.1109/MWSYM.2002.1011790