1 ************************************ NUMERICAL ELECTROMAGNETICS CODE ************************************ - - - - COMMENTS - - - - SAMPLE PROBLEM FOR NEC STICK MODEL OF AIRCRAFT - FREE SPACE - - - STRUCTURE SPECIFICATION - - - COORDINATES MUST BE INPUT IN METERS OR BE SCALED TO METERS BEFORE STRUCTURE INPUT IS ENDED WIRE NO. OF FIRST LAST TAG NO. X1 Y1 Z1 X2 Y2 Z2 RADIUS SEG. SEG. SEG. NO. 1 .00000 .00000 .00000 6.00000 .00000 .00000 1.00000 1 1 1 1 2 6.00000 .00000 .00000 44.00000 .00000 .00000 1.00000 6 2 7 2 3 44.00000 .00000 .00000 68.00000 .00000 .00000 1.00000 4 8 11 3 4 44.00000 .00000 .00000 24.00000 29.90000 .00000 1.00000 6 12 17 4 5 44.00000 .00000 .00000 24.00000 -29.90000 .00000 1.00000 6 18 23 5 6 6.00000 .00000 .00000 2.00000 11.30000 .00000 1.00000 2 24 25 6 7 6.00000 .00000 .00000 2.00000 -11.30000 .00000 1.00000 2 26 27 7 8 6.00000 .00000 .00000 2.00000 .00000 10.00000 1.00000 2 28 29 8 TOTAL SEGMENTS USED= 29 NO. SEG. IN A SYMMETRIC CELL= 29 SYMMETRY FLAG= 0 - MULTIPLE WIRE JUNCTIONS - JUNCTION SEGMENTS (- FOR END 1, + FOR END 2) 1 1 -2 -24 -26 -28 2 7 -8 -12 -18 - - - - SEGMENTATION DATA - - - - COORDINATES IN METERS I+ AND I- INDICATE THE SEGMENTS BEFORE AND AFTER I SEG. COORDINATES OF SEG. CENTER SEG. ORIENTATION ANGLES WIRE CONNECTION DATA TAG NO. X Y Z LENGTH ALPHA BETA RADIUS I- I I+ NO. 1 3.00000 .00000 .00000 6.00000 .00000 .00000 1.00000 0 1 2 1 2 9.16667 .00000 .00000 6.33333 .00000 .00000 1.00000 -24 2 3 2 3 15.50000 .00000 .00000 6.33333 .00000 .00000 1.00000 2 3 4 2 4 21.83333 .00000 .00000 6.33333 .00000 .00000 1.00000 3 4 5 2 5 28.16667 .00000 .00000 6.33333 .00000 .00000 1.00000 4 5 6 2 6 34.50000 .00000 .00000 6.33333 .00000 .00000 1.00000 5 6 7 2 7 40.83333 .00000 .00000 6.33333 .00000 .00000 1.00000 6 7 8 2 8 47.00000 .00000 .00000 6.00000 .00000 .00000 1.00000 -12 8 9 3 9 53.00000 .00000 .00000 6.00000 .00000 .00000 1.00000 8 9 10 3 10 59.00000 .00000 .00000 6.00000 .00000 .00000 1.00000 9 10 11 3 11 65.00000 .00000 .00000 6.00000 .00000 .00000 1.00000 10 11 0 3 12 42.33333 2.49167 .00000 5.99539 .00000 123.77842 1.00000 -18 12 13 4 13 39.00000 7.47500 .00000 5.99539 .00000 123.77842 1.00000 12 13 14 4 14 35.66667 12.45833 .00000 5.99539 .00000 123.77842 1.00000 13 14 15 4 15 32.33333 17.44167 .00000 5.99539 .00000 123.77842 1.00000 14 15 16 4 16 29.00000 22.42500 .00000 5.99539 .00000 123.77842 1.00000 15 16 17 4 17 25.66667 27.40833 .00000 5.99539 .00000 123.77842 1.00000 16 17 0 4 18 42.33333 -2.49167 .00000 5.99539 .00000-123.77842 1.00000 7 18 19 5 19 39.00000 -7.47500 .00000 5.99539 .00000-123.77842 1.00000 18 19 20 5 20 35.66667 -12.45833 .00000 5.99539 .00000-123.77842 1.00000 19 20 21 5 21 32.33333 -17.44167 .00000 5.99539 .00000-123.77842 1.00000 20 21 22 5 22 29.00000 -22.42500 .00000 5.99539 .00000-123.77842 1.00000 21 22 23 5 23 25.66667 -27.40833 .00000 5.99539 .00000-123.77842 1.00000 22 23 0 5 24 5.00000 2.82500 .00000 5.99354 .00000 109.49306 1.00000 -26 24 25 6 25 3.00000 8.47500 .00000 5.99354 .00000 109.49306 1.00000 24 25 0 6 26 5.00000 -2.82500 .00000 5.99354 .00000-109.49306 1.00000 -28 26 27 7 27 3.00000 -8.47500 .00000 5.99354 .00000-109.49306 1.00000 26 27 0 7 28 5.00000 .00000 2.50000 5.38516 68.19859 180.00000 1.00000 1 28 29 8 29 3.00000 .00000 7.50000 5.38516 68.19859 180.00000 1.00000 28 29 0 8 ***** DATA CARD NO. 1 FR 0 1 0 0 3.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 ***** DATA CARD NO. 2 EX 1 1 1 0 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 ***** DATA CARD NO. 3 RP 0 1 1 1000 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 - - - - - - FREQUENCY - - - - - - FREQUENCY= 3.0000E+00 MHZ WAVELENGTH= 9.9933E+01 METERS APPROXIMATE INTEGRATION EMPLOYED FOR SEGMENTS MORE THAN 1.000 WAVELENGTHS APART - - - STRUCTURE IMPEDANCE LOADING - - - THIS STRUCTURE IS NOT LOADED - - - ANTENNA ENVIRONMENT - - - FREE SPACE - - - MATRIX TIMING - - - FILL= 1.067 SEC., FACTOR= .083 SEC. - - - EXCITATION - - - PLANE WAVE THETA= .00 DEG, PHI= .00 DEG, ETA= .00 DEG, TYPE -LINEAR= AXIAL RATIO= .000 - - - CURRENTS AND LOCATION - - - DISTANCES IN WAVELENGTHS SEG. TAG COORD. OF SEG. CENTER SEG. - - - CURRENT (AMPS) - - - NO. NO. X Y Z LENGTH REAL IMAG. MAG. PHASE 1 1 .0300 .0000 .0000 .06004 1.4997E-03 4.6949E-03 4.9287E-03 72.285 2 2 .0917 .0000 .0000 .06338 3.2096E-02 -1.7022E-02 3.6331E-02 -27.938 3 2 .1551 .0000 .0000 .06338 3.7966E-02 -3.1078E-02 4.9064E-02 -39.303 4 2 .2185 .0000 .0000 .06338 4.4299E-02 -4.9460E-02 6.6398E-02 -48.151 5 2 .2819 .0000 .0000 .06338 4.9342E-02 -6.7069E-02 8.3264E-02 -53.658 6 2 .3452 .0000 .0000 .06338 5.2034E-02 -7.9829E-02 9.5290E-02 -56.903 7 2 .4086 .0000 .0000 .06338 5.1637E-02 -8.4841E-02 9.9320E-02 -58.674 8 3 .4703 .0000 .0000 .06004 2.0877E-01 -2.0895E-01 2.9537E-01 -45.024 9 3 .5304 .0000 .0000 .06004 1.7844E-01 -1.7850E-01 2.5239E-01 -45.010 10 3 .5904 .0000 .0000 .06004 1.2813E-01 -1.2752E-01 1.8077E-01 -44.865 11 3 .6504 .0000 .0000 .06004 5.9205E-02 -5.8276E-02 8.3074E-02 -44.547 12 4 .4236 .0249 .0000 .05999 -8.3233E-02 6.6192E-02 1.0634E-01 141.506 13 4 .3903 .0748 .0000 .05999 -8.3106E-02 6.5612E-02 1.0588E-01 141.709 14 4 .3569 .1247 .0000 .05999 -7.6169E-02 5.8726E-02 9.6179E-02 142.368 15 4 .3235 .1745 .0000 .05999 -6.2519E-02 4.6263E-02 7.7774E-02 143.499 16 4 .2902 .2244 .0000 .05999 -4.3490E-02 3.0212E-02 5.2955E-02 145.213 17 4 .2568 .2743 .0000 .05999 -1.9544E-02 1.2376E-02 2.3133E-02 147.657 18 5 .4236 -.0249 .0000 .05999 -8.3233E-02 6.6192E-02 1.0634E-01 141.506 19 5 .3903 -.0748 .0000 .05999 -8.3106E-02 6.5612E-02 1.0588E-01 141.709 20 5 .3569 -.1247 .0000 .05999 -7.6169E-02 5.8726E-02 9.6179E-02 142.368 21 5 .3235 -.1745 .0000 .05999 -6.2519E-02 4.6263E-02 7.7774E-02 143.499 22 5 .2902 -.2244 .0000 .05999 -4.3490E-02 3.0212E-02 5.2955E-02 145.213 23 5 .2568 -.2743 .0000 .05999 -1.9544E-02 1.2376E-02 2.3133E-02 147.657 24 6 .0500 .0283 .0000 .05998 -1.0118E-02 5.2353E-03 1.1392E-02 152.642 25 6 .0300 .0848 .0000 .05998 -4.6176E-03 1.7836E-03 4.9501E-03 158.880 26 7 .0500 -.0283 .0000 .05998 -1.0118E-02 5.2353E-03 1.1392E-02 152.642 27 7 .0300 -.0848 .0000 .05998 -4.6176E-03 1.7836E-03 4.9501E-03 158.880 28 8 .0500 .0000 .0250 .05389 -5.2940E-03 5.3450E-03 7.5230E-03 134.725 29 8 .0300 .0000 .0751 .05389 -1.5853E-03 2.0518E-03 2.5929E-03 127.691 - - - RADIATION PATTERNS - - - - - ANGLES - - - POWER GAINS - - - - POLARIZATION - - - - - - E(THETA) - - - - - - E(PHI) - - - THETA PHI VERT. HOR. TOTAL AXIAL TILT SENSE MAGNITUDE PHASE MAGNITUDE PHASE DEGREES DEGREES DB DB DB RATIO DEG. VOLTS/M DEGREES VOLTS/M DEGREES .00 .00 -2.98 -999.99 -2.98 .00000 .00 LINEAR 2.00020E+01 -133.97 2.62669E-14 -93.07 ***** DATA CARD NO. 4 EX 1 1 1 0 9.00000E+01 3.00000E+01 -9.00000E+01 0.00000E+00 0.00000E+00 0.00000E+00 ***** DATA CARD NO. 5 RP 0 1 1 1000 9.00000E+01 3.00000E+01 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 - - - EXCITATION - - - PLANE WAVE THETA= 90.00 DEG, PHI= 30.00 DEG, ETA= -90.00 DEG, TYPE -LINEAR= AXIAL RATIO= .000 - - - CURRENTS AND LOCATION - - - DISTANCES IN WAVELENGTHS SEG. TAG COORD. OF SEG. CENTER SEG. - - - CURRENT (AMPS) - - - NO. NO. X Y Z LENGTH REAL IMAG. MAG. PHASE 1 1 .0300 .0000 .0000 .06004 2.1952E-03 3.6163E-03 4.2304E-03 58.741 2 2 .0917 .0000 .0000 .06338 6.5450E-03 3.5228E-03 7.4328E-03 28.291 3 2 .1551 .0000 .0000 .06338 7.4391E-03 -5.7724E-03 9.4160E-03 -37.810 4 2 .2185 .0000 .0000 .06338 9.8857E-03 -1.9791E-02 2.2123E-02 -63.458 5 2 .2819 .0000 .0000 .06338 1.4293E-02 -3.5271E-02 3.8057E-02 -67.941 6 2 .3452 .0000 .0000 .06338 2.0095E-02 -4.8858E-02 5.2829E-02 -67.644 7 2 .4086 .0000 .0000 .06338 2.5574E-02 -5.7700E-02 6.3113E-02 -66.096 8 3 .4703 .0000 .0000 .06004 -3.8610E-02 1.5511E-01 1.5984E-01 103.978 9 3 .5304 .0000 .0000 .06004 -2.7543E-02 1.3176E-01 1.3461E-01 101.807 10 3 .5904 .0000 .0000 .06004 -1.4291E-02 9.3989E-02 9.5069E-02 98.645 11 3 .6504 .0000 .0000 .06004 -3.4931E-03 4.3257E-02 4.3398E-02 94.617 12 4 .4236 .0249 .0000 .05999 -2.3663E-02 -2.1177E-01 2.1309E-01 -96.376 13 4 .3903 .0748 .0000 .05999 -1.6402E-02 -2.0488E-01 2.0554E-01 -94.577 14 4 .3569 .1247 .0000 .05999 -7.9414E-03 -1.8318E-01 1.8335E-01 -92.482 15 4 .3235 .1745 .0000 .05999 -3.7454E-04 -1.4723E-01 1.4723E-01 -90.146 16 4 .2902 .2244 .0000 .05999 4.5370E-03 -1.0032E-01 1.0042E-01 -87.411 17 4 .2568 .2743 .0000 .05999 4.5311E-03 -4.4057E-02 4.4290E-02 -84.128 18 5 .4236 -.0249 .0000 .05999 9.4628E-02 -8.9035E-03 9.5046E-02 -5.375 19 5 .3903 -.0748 .0000 .05999 9.3142E-02 -9.9663E-03 9.3673E-02 -6.107 20 5 .3569 -.1247 .0000 .05999 8.5086E-02 -7.7993E-03 8.5443E-02 -5.237 21 5 .3235 -.1745 .0000 .05999 7.0545E-02 -3.6568E-03 7.0640E-02 -2.967 22 5 .2902 -.2244 .0000 .05999 5.0363E-02 3.7762E-04 5.0365E-02 .430 23 5 .2568 -.2743 .0000 .05999 2.3641E-02 1.8773E-03 2.3715E-02 4.540 24 6 .0500 .0283 .0000 .05998 1.1756E-02 -3.7554E-02 3.9351E-02 -72.617 25 6 .0300 .0848 .0000 .05998 7.3150E-03 -2.2549E-02 2.3705E-02 -72.026 26 7 .0500 -.0283 .0000 .05998 -1.0447E-02 3.6781E-02 3.8236E-02 105.856 27 7 .0300 -.0848 .0000 .05998 -4.9516E-03 2.0995E-02 2.1571E-02 103.270 28 8 .0500 .0000 .0250 .05389 -4.6028E-03 -1.6751E-03 4.8981E-03 -160.002 29 8 .0300 .0000 .0751 .05389 -2.6266E-03 -1.6650E-03 3.1098E-03 -147.630 - - - RADIATION PATTERNS - - - - - ANGLES - - - POWER GAINS - - - - POLARIZATION - - - - - - E(THETA) - - - - - - E(PHI) - - - THETA PHI VERT. HOR. TOTAL AXIAL TILT SENSE MAGNITUDE PHASE MAGNITUDE PHASE DEGREES DEGREES DB DB DB RATIO DEG. VOLTS/M DEGREES VOLTS/M DEGREES 90.00 30.00 -51.77 -9.79 -9.79 .00010 89.54 RIGHT 7.27505E-02 -52.30 9.13416E+00 -52.98 ***** DATA CARD NO. 6 EN 0 0 0 0 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 RUN TIME = 1.650