STRUCTURE OF NEC CARD IMAGES, ONE CARD = ONE LINE IN IMAGE
NAME CARD CONTENTS
I= INTEGER, NO DECIMAL POINT ALLOWED
F= FLOATING POINT VALUE, DECIMAL POINT REQUIRED
**** STRUCTURE GEOMETRY CARDS ****
CM CE COMMENTS
MAX 78 CHARACTERS PER CARD (LINE)
GA WIRE ARC
I1- TAG NO.
I2- NO. SEGMENTS IN ARC
F1- ARC RADIUS
F2- START ANGLE, DEG.
F3- END ANGLE
F4- WIRE RADIUS
GE GEOMETRY END
I1- O=NO GND, +/-=GND, +BASE CHARGE=0, -BASE CURRENT=0
GH HELIX/SPIRAL (SOME VERSIONS OF NEC2)
I1- TAG NO.
I2- NO SEGMENTS
F1- TURN SPACING, 0=SPIRAL
F2- LENGTH, - FOR LEFT HAND
F3- X RADIUS AT START
F4- Y RADIUS AT START
F5- X RADIUS AT END
F6- Y RADIUS AT END
F7- WIRE RADIUS
GF READ SAVED NGF FILE
I1- <>0 TO PRINT TABLE OF SEGMENT ENDS
GM RELOCATE/REORIENT
I1- TAG INCREMENT FOR NEW STRUCTURE
I2- NO. NEW STRUCTURES
F1- ROTATE ABOUT X, DEG., +=RIGHT HAND
F2- ROTATE ABOUT Y, DEG. (SEPARATE CARDS TO CHANGE ORDER)
F3- ROTATE ABOUT Z, DEG.
F4- X TRANSLATE
F5- Y TRANSLATE
F6- Z TRANSLATE
F7- TAG TO MOVE, 0=ALL TAGS
GP SUPPRESS GEOMETRY PRINT (MUST PRECEDE GE)
GR GENERATE CYLINDER, Z>0
I1- TAG INCREMENT
I2- NO. FACES APPROXIMATING CYLINDER
GS SCALE DIMENSIONS
I1- 0=TIMES F1, 1=FT. TO M., 2=IN TO M.
I2- BLANK
F1- SCALING FACTOR (I1=0), OR BLANK
GW STRAIGHT WIRE, ENDS 1,2
I1- TAG NO.
I2- NO. SEGMENTS
F1- X1
F2- Y1
F3- Z1
F4- X2
F5- Y2
F6- Z2
F7- WIRE RAD., 0=USE GC FOR TAPERED WIRE
GC TAPERED WIRE CONTINUE
I1- BLANK
I2- BLANK
F1- RATIO OF RADII ADJACENT SEGMENTS
F2- RADIUS FIRST SEGMENT
F3- RADIUS LAST SEGMENT
GX REFLECT IN COORDINATE PLANE
I1- TAG NO. INCREMENT
I2- 1XX FOR REFLECT IN X, 0XX= NO REFLECT IN X
X1X FOR REFLECT IN Y, X0X= NO REFLECT IN Y
XX1 FOR REFLECT IN Z, XX0= NO REFLECT IN Z
SP SURFACE PATCH, SC FOLLOWS IF NOT ARBITRARY
I1- BLANK
I2- SHAPE, 0-ARBIT.,OR 1=RECT., 2=TRIAN., 3=QUADLAT. (SEE SC)
F1- ARB., CENTER X, ELSE CORNER 1 X
F2- ARB., CENTER Y, ELSE CORNER 1 Y
F3- ARB., CENTER Z, ELSE CORNER 1 Z
F4- ARB., ANGLE ABOVE XY, ELSE CORNER 2 X
F5- ARB., ANGLE FROM X, ELSE CORNER 2 Y
F6- ARB., PATCH AREA, ELSE CORNER 2 Z
SC SM PATCH CONTINUE, NOT ARBITRARY
I1- BLANK
I2- BLANK
F1- CORNER 3 X
F2- CORNER 3 Y
F3- CORNER 3 Z
F4- QUAD ONLY, CORNER 4 X
F5- QUAD ONLY, CORNER 4 Y
F6- QUAD ONLY, CORNER 4 Z
SM PATCHES IN RECTANGULAR AREA, SC MUST FOLLOW
I1- NUMBER OF PATCHES IN X DIRECTION
I2- NUMBER OF PATCHES IN Y DIRECTION
F1- CORNER 1 X
F2- CORNER 1 Y
F3- CORNER 1 Z
F4- CORNER 2 X
F5- CORNER 2 Y
F6- CORNER 2 Z
SC SM PATCH CONTINUE
I1- BLANK
I2- BLANK
F1- CORNER 3 X
F2- CORNER 3 Y
F3- CORNER 3 Z
**** PROGRAM CONTROL CARDS ****
CP MAXIMUM SEGMENT COUPLING CALCULATION, 2 1/2 CARDS. MAX
I1- TAG #1 (EXCITE WITH EX CARD, TYPE I1=0)
I2- SEGMENT # IN TAG 1 TO BE EXCITED
I3- TAG #2 (CALCULATE WITH XQ, RP, NE, NH CARD)
I3- SEGMENT # IN TAG 2
EK USE EXTENDED THIN-WIRE KERNEL
I1- BLANK OR 0= USE EXT KERNEL, -1 RESET TO USE NORMAL
EN INDICATES END OF RUN
EX EXCITE STRUCTURE, LAST ENCOUNTERED=USED
I1- 0=E VOLTAGE (A), 1=LINEAR WAVE (B), 2= R CIRC WAVE (B)
3=L CIRC WAVE (B), 4= CURRENT (C), 5= VOLTAGE DISC. (A)
I2- (A) SOURCE TAG#, (B) # TH ANGLS, (C) BLANK
I3- (A) SOURCE SEG#, (B) # PH ANGLS, (C) BLANK
I4- (A) XX= ADMIT.,IMPED. PRINT, X=0 NO/1 DO, (BC), 1= ADM. PRINT
F1- (A) EREAL, (B) TH ANGL, (C) X OF SOURCE
F2- (A) EIMAG, (B) PH ANGL, (C) Y OF SOURCE
F3- (A) NORM FOR I4, (B) ET ANGL, Z OF SOURCE
F4- (A) BLANK, (B) TH INC, (C) ALPHA ANGLE FROM XY
F5- (A) BLANK, (B) PH INC, (C) BETA ANGLE FROM X
F6- (A) BLANK, (B) MIN/MAJ AXIS, PRODUCT AMPS X LENGTH
FR FREQUENCY
I1- O= LINEAR STEP, 1=MULTIPLICATIVE
I2- NO. STEPS, BLANK=1
I3- BLANK
I4- BLANK
F1- FREQUENCY OR START FREQUENCY
F2- FREQ INCREMENT, ADD OR MULTIPLY
GD FAR GROUND, (NEAR GROUND BY GN), (SET FLAG ON RP)
I1- BLANK
I2- BLANK
I3- BLANK
I4- BLANK
F1- DIELECTRIC OF FAR GROUND
F2- CONDUCTIVITY, FAR GROUND
F3- DISTANCE TO START OF FAR GROUND
F4- HEIGHT FAR GROUND, 0=SAME AS NEAR, >0= BELOW NEAR GROUND
GN NEAR GROUND, GROUND SCREEN, ADDED GROUND
I1- -1=SET FREE SPACE (A), 0=REFL COEFF, 1=IDEAL (B), 2-SOMMERFIELD
I2- (A) BLANK), NO WIRES IN GND SCREEN (C), 0= NO WIRES (D)
I3- BLANK
I4- BLANK
F1- (A,B) BLANK, DIELECTRIC OF NEAR GROUND
F2- (A,B) BLANK, CONDUCTIVITY OF NEAR GROUND
F3- (A,B) BLANK, (C) RADIUS OF SCREEN, (D) DIELECTRIC 2ND MEDIUM
F4- (A,B) BLANK, (C) RADII SCREEN WIRES, (D) CONDUCT. 2ND MEDIUM
F5- (A,B) BLANK, (C) BLANK, (D) DIST TO 2ND MEDIUM, SEE RP
F6- (A,B) BLANK, (C) BLANK, (D) HEIGHT 2ND MEDIUM (AS IN GD)
KH INTERACTION AP[PROXIMATION RANGE
I1- BLANK
I2- BLANK
I3- BLANK
I4- BLANK
F1- DISTANCE TO START APPROXIMATION, WAVELENGTHS
LD LOADING
I1- -1 CANCEL LOADS, 0=SERIES RLC LUMP, 1=PARALLEL RLC LUMP,
2=SERIES DIST., 3=PARALLEL DIST. (A), 4=Z (B), 5=WIRE COND. (C)
I2- TAG# TO BE LOADED, BLANK/0= USE ABSOLUTE #s
I3- SEG# OF TAG # TO START LOADS, OR ABSOLUTE SEG#
I4- SEG# OF TAG# TO END LOADS, OR OR ABSOLUTE SEG#
F1- RES., OHMS, OR (A) OHMS/UNIT LENGTH, OR (B) RES. OR (C) OHMS/METER
F2- IND., HENRY, OR (A) HY/LENGTH OR (B) REACT. OR (C) BLANK
F3- CAP,. FARAD, OR (A,B) BLANK
NE NH NEAR ELECTRIC, NEAR MAGNETIC FIELD
I1- O=RECT. COORD. (A), 1=SPHERICAL (B)
I2- NO. POINTS IN (A) X, (B) R (CHANGES MOST RAPIDLY)
I3- NO. POINTS IN (A) Y, (B) PHI
I4- NO. POINTS IN (A) X, (B) TH
F1- COORDINATE (A) X, (B) R
F2- COORDINATE (A) Y, (B) PHI
F3- COORDINATE (A) Z, (B) TH
F4- INCREMENT (A) X, (B) R
F5- INCREMENT (A) Y, (B) PHI
F6- INCREMENT (A) Z, (B) TH
NT NETWORKS
I1- PORT 1 TAG #, BLANK/0, USE I2 AS ABSOLUTE
I2- SEGMENT#, OR ABSOLUTE END 1 SEGMENT, -1=CANCEL NETS/LINES
I3- AS I1 FOR PORT 2
I4- AS I2 FOR PORT 2
F1- REAL OF Y(11), MHOS
F2- IMAG OF Y(11)
F3- REAL OF Y(12)
F4- IMAG OF Y(12)
F5- REAL OF Y(22)
F6- IMAG OF Y(22)
NX NEXT STRUCTURE
PQ PRINT WIRE CHARGE
I1- -1 NO CHARGE PRINT (DEFAULT), 0 OR BLANK, PRINT CHARGE
I2- TAG# TO PRINT, 0=I3/I4 IS ABSOLUTE
I3- START SEGMENT # OF TAG, OR ABSOLUTE SEGMENT#, 0 OR BLANK, ALL SEGS
I4- END SEG. # OF TAG, OR ABSOLUTE SEG.#, OR BLANK= I3 ONLY
PL PLOT DATA STORAGE
I1- 0=NO STORE, 1=CURRENTS, 2=NEAR FIELD, 3=PATTERNS
I2(1,2)- 0=NO, 1=REAL,IMAG, 3=MAG, PHASE
I2(3)- 1=TH, 2=PHI, 3=RHO ANGLES
I3(1)- 0=N0, 1=IX, 2=IY, 3=IZ, 4=IX IY IZ
I3(2)- 0-N0, 1=X, 2=Y, 3=Z, 4=X Y Z, 5=TOTAL COMPONENT
I3(3)- 0=NO, 1=TH, 2=PHI, 3=RHO E-FIELD COMPOMENT
I4(1)- BLANK
I4(2)- 1=X, 2=Y, 3=Z CORDINATE VALUES
I4(3)- 1=V, 2=H, 3=TOTAL, 4=V H T GAINS DB
PT CURRENT PRINT CONTROL
I1- -2=ALL, -1=SUPR. PRNT., 0=SEGS BELOW, 1=REC. FMT., 2=NORMAL(1)
I2- TAG# OF SEGMENT, 0=ABSOLUTE LOCATION
I3- START SEG OR ABS SEG
I4- END SEG OR ABS SEG
(1,1,1,1=SUPPRESS CURRENT PRINT)
RP RADIATION PATTERN SET
I1- SEE GN; 0=SPACE WAVE, 1=SPACE+GND WAVE, 2=LIN CLIFF, 3=CIR CLIFF,
4=GND SCREEN, 5=SCRN+LIN CLIFF, 6=SCRN+CIR CLIFF
I2- # VALUES OF TH, BLANK=1
I3- # VALUES OF PHI, BLANK=1
I4- BLANK IF I1=1, ELSE abcd
a- 0=MAJ0R, MINOR, TOT, 1=V, H, TOT AXIS GAIN
b- 0=NONE, 1=MAJ, 2=MIN, 3=V, 4=H, 5=T NORMALIZED AXIX GAIN
c- 0=POWER GAIN, 1=DIRECTIVE GAIN
d- 0= NO AVERAGE, 1=AVERAGE, 2= AVERAGE SOME SUPPRESSED
F1- INITIAL TH, OR I1=1, INITIAL Z
F2- INITIAL PHI
F3- INCREMENT TH OR I1=1, INCREMENT Z
F4- INCREMENT PHI
F5- RADIAL DIST. OF FIELD POINT OR 0=OMIT EXP, 1- CYLIND. CORD.
F6- NORMALIZE FACTOR FOR I4, BLANK/0= TO MAX GAIN.
NOTE: A BLANK RP CAN BE USED TO SEPARATE DATA BLOCKS
TL TRANSMISSION LINE
I1- PORT 1 TAG #, BLANK/0, USE I2 AS ABSOLUTE
I2- SEGMENT#, OR ABSOLUTE END 1 SEGMENT, -1=CANCEL NETS/LINES
I3- AS I1 FOR PORT 2
I4- AS I2 FOR PORT 2
F1- LINE Zo, -=CROSSED LINE
F2- LINE LENGTH METERS, BLANK=STRAIGHT LINE P1 TO P2
F3- REAL SHUNT ADM., END 1 MHOS
F4- IMAG SHUNT ADM., END 1
F5- REAL SHUNT ADM., END 2
F6- IMAG SHUNT ADM., END 2
WG WRITE NUMERICAL GREENS FUNCTION FOR LATER USE
XQ EXECUTE ACCUMULATED CARD DECK
I1- 0=NO PATTERN, 1=XY PATTERN, 2= YZ PATTERN, 3=BOTH
(DO NOT USE FOR RADIAL GND SCREEN OR 2ND GND MEDIUM)
NOTES: FOR A SINGLE FREQUENCY, XQ, NE, NH, RP CAUSE IMMEDIATE EXECUTION
FOR MULTIPLE FREQS, ONLY XQ, RP CAUSE EXECUTION