What is a helical antenna? or helix antenna: features

Table of Contents

What is a helical antenna or propeller antenna is one whose construction is formed by a helix-wrapped conductor of its second name.

It has a solenoid shape and its origin comes from the vertical monopole antenna.
A solenoid is a physical device that is capable of creating a uniform magnetic field.

One of the typical basic solenoids is a coil or a transformer that is applied to an antenna.

Characteristics

1 ⇒ Broadband

The helical antenna has a large bandwidth.
A propeller is the result of winding a thread on a cylinder object.

2 ⇒ Helix Geometry

Coil Diameter.
Separation between two consecutive turns.
Turn number the propeller has.
Thread Diameter.
Winding direction (Right or Left).

3 ⇒ Circular type polarization.

The direction of rotation is defined by the driver (Right or Left).

Operating mode

1 ⇒ Depending on the size of the propeller

There are two basic helical antenna modes.
Normal mode: it is the antenna built on a ground plane.
Axial Mode: it has great directivity and high bandwidth.

Classification

1 ⇒ Antena para radio

For portable radio.

2 ⇒ Satellite reception antenna.

These have application in reception of satellite signal and operate in frequencies that comprise 1575.42 MHz.
Antenna is circular polarization.
The turns are separated a little less than the propeller.

3 ⇒ HALO antenna.

It is a helical antenna.
This is basically used in the VHF reception.
They are omnidirectional antennas.
They offer good profits.

Properties of the helical antenna

1 ⇒ Polarization.

The polarization of the helix antenna is circular (vertical or horizontal in equal parts).

2 ⇒ Impedance.

These antenna offer low impedance and must be adapted to transmitters with impedance adapters.

3 ⇒ Resonance.

It is a resonant antenna at the basic or fundamental frequencies.

Helical antenna dimensions

1 ⇒ Helical dimensions are given by acronyms.

D = helical diameter “Center to center of conductor”.
C = circumference perimeter “ΠD”.
S = Space between turns “center to center of the driver”.
∝ = It is the elevation angle “tan-1 / ΠD”.
L = Length of one turn.
n = Number of turns.
A = Axial length “nS”.
d = helical conductor diameter.
G = The diameter of the ground plane.

TV Antenna List

First of all, if you don’t have a TV antenna in your home, we leave you an antenna list so you can tune into the TV channels of your country or region.

1- How to make a homemade tv antenna .

2- Super, Sencilla y Económica ✅ Antena para TV▶️ Coaxial & Splitter.

3- Antena log periodic – Diseño para la construccion- antena para tv.

4- Como hacer una antena de tv casera de largo alcance.

5- Como hacer una antena casera para tv Clip & Splitter.

In the JM Actualidades channel we have antenna manufacturing videos for every need, so visit the YouTube channel.