LLAMA APL Software for Circuit Analysis

The “Lincoln Laboratory Advanced MARTHA Applications” (LLAMA for short) is a set of workspaces (a collection of APL functions) developed primarily in conjunction with MARTHA.  Many of the workspaces are an extension of MARTHA, and allow the use of a new circuit elements or new types of analysis.  A number of workspaces are devoted to filter synthesis, using both lumped elements and coupled microstrip transmission lines.  Other workspaces are aimed toward RF system design, including mixer-spur and dynamic-range analysis.

The following workpaces are described in detail in the LLAMA manual:

LLUTILTY.AWS Utilities for Use with MARTHA and LLAMA, including workspace maintenance functions, and native file functions
LLPLOT.AWS General purpose XY Plotting Workspace
MARTHAP.AWS XY Plotting Workspace for use with MARTHA
LLMARTHA.AWS Enhanced MARTHA Circuit Analysis Workspace
LLMSDIM.AWS ‘Full Field’ Microstrip Transmission-Line Analysis
LLCOMBFL.AWS Microstrip Combline Filter Synthesis
LLFILTER.AWS LC Filter Design Workspace
LLPHASE.AWS MARTHA compatible group delay and phase distortion analysis.  All-Pass phase compensation network design
LLMIXER.AWS Mixer spur analysis.  Used to create MIXSPUR.EXE, a DOS executable mixer spur plotting program.
LLTIME.AWS MARTHA Compatible Time Domain Analysis
MARTHAD.AWS MARTHA ‘Development’ Workspace, including: nodal wiring functions, stripline model, data reduction two-ports, approximate group delay, rational functions of s, Fourier Transform functions, and s-Plane analysis
LLRADIAL.AWS Adds microstrip radial-stub element to MARTHA
LLRFCOIL.AWS Inductor Winding and Parasitic Analysis
LLDRANGE.AWS Dynamic Range Analysis and Plotting (requires special video card)
RUFILSYN.AWS LC Filter Synthesis, including elliptical filters
Note!   These last two workspaces are NOT included at this time while we try to obtain permission from Rutgers University

There are several other workspaces that are included in this distribution, but that are not covered in the LLAMA manual.  Some of them are fairly simple and are documented internally, while others are the results of MIT theses, and are documented in that form.

MARTHA4P.AWS Adds 4-Port analysis capability to MARTHA
MARTHANL.AWS MARTHA non-linear circuit analysis workspace.  There is no internal documentation in the workspace, but there is full documentation contained in an MIT thesis [1].
MARTHANZ.AWS MARTHA noise analysis workspace.  This is documented briefly in the workspace, but there is full documentation contained in an MIT thesis [2].


LLAMA Workspace:  (645 kbytes)
LLAMA Manual:  LLAMA Manual.pdf  (419 kbytes)


[1] Singel, E. M., “A computer aided analysis system for slightly nonlinear circuits using Volterra series,” MIT Engineer’s Thesis, 1975, Department of Electrical Engineering and Computer Science.
[2] Ufford, J. C., “Computer aided noise analysis,” MIT Master’s Thesis, 1975, Department of Electrical Engineering and Computer Science.

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