文本内容:
HelicalAntennav
1.0----------------------------------------------------------------------------------------ProgrammedbyBoYang10/2002Referen__:AntennaTheory:____ysisandDesignSecondEditionConstantineA.BalanisSection
10.
3.1HelicalAntenna----------------------------------------------------------------------------------------Thisprogramcalculatesthecharacteristicsofahelicalantennabothinthenor__lmodeandaxialend-firemode.Togetthecorrectoutputfollowtheinstructions.Brief__nual----------------------------------------------------------------------------------------
1.Choi__ofoutput-----------------Input1:ScreenoutputInput2:Fileoutput
2.Choi__ofradiationmode------------------------Input1:NormalmodeInput2:AxialEnd-Firemode
3.Input-------a.NumberofturnsNb.Circumferen__ofloopsCinlambdac.SpacingbetweenturnsSinlambdaForaxialmodealsoneedtoselectend-firemode:Input1:OrdinaryEnd-FireInput2:Hansen-WoodyardEnd-FireInput3:p=
14.Output--------I.Nor__lModea.Pitchanglealphaindegreesb.AxialratioARc.DirectivitydimensionlessandindBd.Plotthenor__lizedradiationpatternindB:0to-60dBII.AxialEnd-FireModea.Pitchanglealphaindegreesb.Inputimpedan__ohmsc.AxialratioARd.Relativephasevelocityratiope.HPBWindegreesA.Approxi__teuseequation10-31B.Numericalfoundfrompatternf.FNNWindegreesA.Approxi__teuseequation10-32B.Numericalfoundfrompatternsetzeropointtobelessthan1e-6g.DirectivitydimensionlessandindBA.Approxi__teuseequation10-33B.NumericalcalculatedfromequationD0=4*pi*U__x/Pradh.Plotthenor__lizedradiationpatternindB:0to-60dB----------------------------------------------------------------------------------------。