Dipole Antenna Length Calculator, Radiation Pattern Plots

Total length of $____$ $\lambda$ dipole antenna is	$L$	____
Length of each dipole element is	$\frac{L}{2}$	____
Maximum Directivity is	$D$	____	dB
Radiation resistance based on current maximum	$R_{rad}$	____	ohm
Reactance based on current maximum	$X_m$	____	ohm
Input resistance	$R_{in}$	____	ohm
Input reactance	$X_{in}$	____	ohm

Normalized radiation pattern of $E_ \theta$ in rectangular plot elevation cut.	Normalized radiation pattern of $E_ \theta$ in polar plot elevation cut.
$Normalized radiation pattern of $E_ \theta$ in rectangular plot elevation cut$	$Normalized radiation pattern of $E_ \theta$ in polar plot elevation Ccut$

Formula

$\lambda=\frac{c}{\nu}$

$U(\theta) (pattern \, normalized) \simeq \left [ \frac{cos (\frac{kL}{2}cos \theta)-cos(\frac{kL}{2})}{sin\theta} \right ]^2$

Where:

$\lambda$ = Wavelength

$\nu$ = Frequency

$L$ = Total Length of Dipole Antenna

$U(\theta) (pattern \, normalized)$ =The normalized (to 0 dB) elevation power pattern over

$\theta$

The angular wavenumber

$k=\frac{2\pi }{\lambda }$ expresses the number of radians in a unit of distance

Normalized radiation pattern of $E_ \theta$ in rectangular plot elevation cut.	Normalized radiation pattern of $E_ \theta$ in polar plot elevation cut.
$Normalized radiation pattern of \(E_ \theta\) in rectangular plot elevation cut$	$Normalized radiation pattern of \(E_ \theta\) in polar plot elevation Ccut$