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Antennas_CD-ROM_Walnut_Creek_September_1996.iso
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mninput.doc
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1996-06-30
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THE INPUT SEQUENCE
Mininec has been created with a good set of prompts, which makes data
input relatively easy. The following reviews the input requirements in
the sequence they are encountered. It is assumed that MNsetup.doc has
been read first.
Each of the following headers represents a major input request from
Mininec. A star after an input quantity indicates that the entry
causes some of the immediately following input possibilities to be
ignored.
Note that most input requests have protection tests. Most ask for a
repeat of input, but a few cause a jump to a menu. Requests for a
letter require a capital.
After printing a header, data input requests start.
OUTPUT TO CONSOLE=C *, PRINTER=P *, Disk=D
-Enter selected letter
FILENAME
-Enter the filename (and filepath if disk storage is to be
used for output and/or geometry input)
FREQUENCY
-Enter desired frequency in MHz. A zero causes the frequency to
be set to 299.8 MHz.
ENVIRONMENT
-Enter 1 for free space conditions *, -1 for ground plane
NUMBER OF MEDIA
-Enter 0 for ideal ground *, 1 to 5 for number of media
TYPE OF BOUNDARY
-Enter 1=Linear, 2=Circular
MEDIA
-Enter, in order, dilectric constant, conductivity in
mhos/meter, for each media
NUMBER OF RADIAL WIRES IN GROUND SCREEN
-Enter 0=no screen *, or number
RADIUS OF RADIAL WIRES
-Enter radius, meters
X OR R COORDINATE OF NEXT MEDIA
-Enter distance, meters
HEIGHT OF MEDIA
-Enter height relative to 0,0,0 point, meters
(Note: at this point, a check is made for existence of the named file
+".GEO" in the disk designated by filepath; it is loaded if present
*)
NO. OF WIRES
-Enter number; 0= *
NO. OF SEGMENTS
-Enter number
END ONE COORDINATES
-Enter X, Y, Z in meters
END TWO COORDINATES
-Enter X, Y, Z in meters
RADIUS
-enter radius, meters
(For each wire)
(Note: at this point wire connections are made, and a table of
connections is output)
CHANGE WIRE NO.
-Input Y for a change or N
(Note: after finishing with input of last wire a second geometry table
is output. Check that location of segment to be fed or loaded is
correct, and that connections are correct)
CHANGE GEOMETRY
-Enter N= no change, or Y= repeat at NO. Wires
NO. OF SOURCES
-Enter number of drive feed points; 1 is assumed if a lesser
number is entered
PULSE, VOLTAGE, PHASE
-Enter number of segment to be driven, drive in volts, phase
in degrees for each driven segment
NUMBER OF LOADS
-Enter number of segments to be loaded, 0=none *
S-PARAMATER LOAD
-Enter Y if needed, or N *
PULSE NUMBER, ORDER OF S
-Enter number of the segment to be loaded, highest S
exponent
NUMERATOR, DENOMINATOR COEFFICIENTS OF S
-Enter coefficients, ohms, henries, farads, as appropriate,
each loaded segment
PULSE, RESISTANCE, REACTANCE
-Enter number of segment to be loaded, load resistance, load
reactance, ohms, each loaded segment
(Note: A menu is now displayed. Several entries allow input changes,
by jump to the input routines above. In some cases following inputs
also must be repeated. The options which produce output and require
further input follow)
C=COMPUTE/DISPLAY CURRENTS
(Note: current computation is required for any form of solution. If C
is not entered the currents will be computed but not displayed. A
table of feed point(s) conditions and power will be output in all
cases. If C has been entered, this is followed by a tabulation of
current in each segment.
P=COMPUTE FAR-FIELD PATTERNS
VARIABLES IN DBI OR VOLTS/METER
-Enter D * for dbi or V for field intensity, in
uvolts/meter
CHANGE POWER LEVEL
-Enter N * for no change, or Y
NEW POWER LEVEL
-Enter value, 0 or less= no change *
RADIAL DISTANCE
-Enter distance to calculation point, meters, 0 or less= no
change *
ZENITH ANGLE
-Enter initial angle in degrees from zenith, increment per
step, number of calculation steps
AZIMUTH ANGLE
-Enter initial angle in degrees from zero, increment per
step, number of calculation steps
(Note: Zero degrees azimuth is along plus X-axis, zero degrees zenith
is along plus Z-axis. Minus angles are allowable. For complete
coverage of the free space pattern, 0 to +180 zenith and 0 to 360
azimuth is required. Choose increment to show smallest lobe width.)
FILE FAR FIELD DATA
-Enter Y for disk copy or N *
FILENAME
-Enter filepath + filename
N=COMPUTE NEAR FIELDS
ELECTRIC OR MAGNETIC
-Enter E=electric, H=magnetic
FIELD LOCATION(S)
-Enter initial location from 0,0,0, increment distance,
number of steps
CHANGE POWER LEVEL
-Enter Y=change or N *
NEW POWER LEVEL
-Enter new level, watts, 0=old
SAVE TO A FILE Y/N
-Enter Y for a disk file or N= No *
FILENAME
-Enter filepath + filename
The extended versions of MININEC include one or more additional
routines
VARIABLE FREQUENCY
Has inputs to set the initial frequency, the increment and the
number of increments. Does not recalculate the magnitude of load when
the frequency steps.
VARIABLE LOADS
Has inputs to set the initial reactive load, the increment and
the number of increments. Does not allow resistive components in the
variable load.
OPTIMIZER
Has input to select maximization of gain or front to back ratio.
Requires reflector to be first element, then radiator, then directors.
Varies reflector size to maximize the selected quantity, then varies
director sizes in the same way. All directors use same increment.
(Caution: Maximum gain, maximum F/B and high bandwidth occur at
different design points. The maximum gain condition often gives narrow
bandwidth and poor F/B ratio. Maximum F/B may give reduced gain and
reduced bandwidth. Always recheck the optimized design for all
inportant performance parameters. Several trials may be needed to
obtain a satisfactory compromise design.)