By Topic

A Helical Antenna for Circular Polarization

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
H. A. Wheeler ; Consulting Radio Physicist, Great Neck, N.Y.

A helical coil radiates a wave of circular polarization in a doughnut pattern if the area and pitch of the turns are properly related to the radianlength of the wave. For a coil whose dimensions are less than the radianlength, circular polarization requires that the area A of each turn and the pitch p be related to the radianlength l as follows: A=pl. The simplest form of helical antenna is a self-resonant coil of several turns. To obtain greater radiation power factor and efficiency, a multifilar winding is preferred, having a fractional turn for each of several helical wires connected in parallel with symmetry around the axis. This type of antenna offers television the advantages of circular polarization in suppressing echoes from reflecting surfaces.

Published in:

Proceedings of the IRE  (Volume:35 ,  Issue: 12 )