Alaris Antennas Spiral Antennas

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Alaris Antennas designs and manufactures a range of Spiral Antennas, which can be customised to suit each client’s requirements.

These antennas belong to the class of frequency independent antennas which can be designed to operate over a wide range of frequencies. Polarization, radiation pattern and impedance of these antennas remain relatively stable over a large bandwidth.

The antenna is designed to use two conductive spiralled arms, extending from the centre outwards. The antenna may be a flat disc, with conductors resembling a pair of loose spirals, or the arms may extend in a three-dimensional shape like a spring. The direction of antenna polarisation depends on the direction of rotation of the spiral.

Possible applications of these antennas are wideband communications, spectrum monitoring, direction finding and signal suppression.

The two types of theses antennas that are offered by Alaris Antennas are cavity backed and conical spiral antennas.

Cavity backed spiral antennas are inherently circularly polarized with medium gain. An array of these antennas can be used to increase the gain. The cavity changes the antenna pattern to a directional shape.

Conical spirals offer higher directionality and gain, which is often required for communications and signal suppression applications.

Below are the current designs offered by Alaris Antennas. Please click on each product to view it on our website.

Alaris Antennas is part of the Alaris Holdings Group of Companies.
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[av_row row_style=’avia-heading-row’][av_cell col_style=”]Product Code[/av_cell][av_cell col_style=”]Product Name[/av_cell][av_cell col_style=”]Frequency Range[/av_cell][/av_row]
[av_row row_style=”][av_cell col_style=”]SPRL-A0001[/av_cell][av_cell col_style=”]LHCP Cavity Backed Antenna[/av_cell][av_cell col_style=”]1000 – 4000 MHz[/av_cell][/av_row]
[av_row row_style=”][av_cell col_style=”]SPRL-A0003[/av_cell][av_cell col_style=”]LHCP Cavity Backed Spiral Antenna[/av_cell][av_cell col_style=”]1000 – 6000 MHz[/av_cell][/av_row]
[av_row row_style=”][av_cell col_style=”]SPRL-A0007[/av_cell][av_cell col_style=”]LHCP Cavity Backed Spiral Antenna[/av_cell][av_cell col_style=”]6000 – 18000 MHz[/av_cell][/av_row]
[av_row row_style=”][av_cell col_style=”]SPRL-A0005[/av_cell][av_cell col_style=”]High Power Circular Polarised Antenna[/av_cell][av_cell col_style=”]400 – 450 MHz[/av_cell][/av_row]
[av_row row_style=”][av_cell col_style=”]SPRL-A0008[/av_cell][av_cell col_style=”]High Power Circular Polarised Antenna[/av_cell][av_cell col_style=”]1000 – 6000 MHz[/av_cell][/av_row]
[av_row row_style=”][av_cell col_style=”]SPRL-A0018[/av_cell][av_cell col_style=”]High Power Circular Polarised Antenna[/av_cell][av_cell col_style=”]1000 – 1600 MHz[/av_cell][/av_row]
[av_row row_style=”][av_cell col_style=”]SPRL-A0020[/av_cell][av_cell col_style=”]High Power Circular Polarised Antenna[/av_cell][av_cell col_style=”]400 – 2500 MHz[/av_cell][/av_row]
[av_row row_style=”][av_cell col_style=”]SPRL-A0021[/av_cell][av_cell col_style=”]High Power Circular Polarised Antenna[/av_cell][av_cell col_style=”]2000 – 6000 MHz[/av_cell][/av_row]
[av_row row_style=”][av_cell col_style=”]SPRL-A0010[/av_cell][av_cell col_style=”]Dual Port Circular Polarised Antenna[/av_cell][av_cell col_style=”]1000 – 6000 MHz[/av_cell][/av_row]
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