# HELICAL ANTENNA & its Specifications

Helical antenna is an antenna which has a helix or spring shape. Its polarisation and radiation properties depend on the diameter, pitch, number of turns, wavelength, excitation and spacing between the helical loops.

## Helix Antenn Design and Construction Details

A typical structure of helical antenna is shown in

It consists of helical loops made of a thick conductor which have the appearance of a screw thread. It is associated with a ground plane made of the conductor. The ground plane is often made of screen or sheet or of radial and concentric conductors. This antenna is fed by a coaxial cable. This can be operated in normal and axial modes. The common antenna parameters are:

C = circumference of helix

α = pitch angle

S = loop separation

La = axial length = NR

N = number of turns

L = length of one turn

r = distance between ground plane and helix proper

d = diameter of helix conductor

The inter relations between the parameters are

## 12 Replies to “HELICAL ANTENNA & its Specifications”

1. Hello everybody , can anyone suggest where I can purchase Switch CBD?

2. Hello, you used to write magnificent, but the last several posts have been kinda boring?I miss your super writings. Past several posts are just a bit out of track! come on!

3. Great blog right here! Additionally your website rather a lot up very fast!
What host are you the usage of? Can I get your associate
link in your host? I wish my web site loaded up as fast as yours lol asmr 0mniartist

4. Hi there to all, how is the whole thing,
I think every one is getting more from this site, and your views
are fastidious for new viewers. 0mniartist asmr

5. I do not even know how I ended up here, but I thought this
post was good. I do not know who you are but certainly
you’re going to a famous blogger if you are not already 😉 Cheers!
0mniartist asmr