Analysis of the symmetric center-fed V-dipole antenna

A wire antenna moment method using piecewise sinusoidal expansion and testing functions is used to obtain properties of a symmetric center-fed
V
-dipole antenna driven by a slice generator. The impedance, admittance, current distribution, radiation patterns in the dipole plane, and other properties are computed as functions of the parameters
0 < h/\lambda \leq 0.60
,
100 \leq h/a \leq 20 000
, and
30\deg \leq \psi \leq 180\deg
, where
h
= arm length,
\lambda
= free space wavelength,
a
= wire radius, and
\psi
= apex angle. The results are checked with experiment and compared with similar results previously reported for the linear dipole. It is shown that 1) omnidirectional patterns over a wide bandwidth are achieved for
\psi \leq 90\deg
, but at the expense of reduced resonant radiation resistance and reduced bandwidth, insofar as the impedance is concerned, 2) for
\psi
less than about
75\deg-80\deg
, lowest resonant length
\geq \lambda/4
and increases as
h/a
decreases, and 3) lowest antiresonant length for
\psi > 30\deg
is within
0.01\lambda
of that for a linear dipole with the same
h/a
.