The cavity backed dual arm archimedean spiral antenna uses 6063T6 ultra corrosion resistant architectural anodized aluminum alloy and designed to provide wideband directional transmission/reception of radio signals. The circular polarized cavity backed spiral antennas are supplied with powder coating finish to protect the antenna further from severe environmental conditions. Cavity backed spiral antennas are highly suitable where circularly polarized signals are required with ultra wide bandwidth. Both left hand circular polarization (LHCP) and right hand circular polarization (RHCP)cavity backed spiral antenna are available.


The MIL-STD cavity backed dual arm archimedean spiral antenna model AS-1000-3000 use 6063T6 ultra corrosion resistant architectural anodized aluminum alloy and designed to provide wideband directional transmission/reception of radio signals from 1000-3000 MHz bands. The antenna is supplied with powder coating finish to protect the antenna further from severe environmental conditions. Both left hand circular polarization (LHCP) and right hand circular polarization (RHCP) are available.


The military grade cavity backed dual arm archimedean spiral antenna is a frequency independent antenna and this spiral antenna is weather protected suitable for outdoors use in applications requiring circularly polarized RF radiations. The AS-1000-3000 uses extended coaxial stubs technique to provide constant 3+ dBi gain over entire 1000-3000 MHz frequency band while maintaining the wider beam-width. This cavity backed spiral antenna is highly suitable for transmission, reception, monitoring, scanning, ECM, surveillance, signal intelligence (SIGINT), direction finding (DF), telemetry and airborne applications due to its ultra broad band design feature.


The heavy duty cavity backed dual arm archimedean spiral antenna model AS-800-6000 use 6063T6 ultra corrosion resistant architectural anodized aluminum alloy and designed to provide wideband directional transmission/reception of radio signals from 800-6000 MHz bands. The antenna is supplied with powder coating finish to protect the antenna further from severe environmental conditions. Both left hand circular polarization (LHCP) and right hand circular polarization (RHCP) are available.


The AS-1000-9000 cavity backed dual arm archimedean spiral antenna use 6063T6 ultra corrosion resistant architectural anodized aluminum alloy and designed to provide wideband directional transmission/reception of radio signals from 1000-9000 MHz bands. The antenna is supplied with powder coating finish to protect the antenna further from severe environmental conditions. Both left hand circular polarization (LHCP) and right hand circular polarization (RHCP) are available.


The high gain cavity backed dual arm archimedean spiral antennas are frequency independent antenna and the cavity backed spiral antennas are weather protected suitable for outdoors use in applications requiring circularly polarized RF radiations. The cavity backed spiral antennas uses extended coaxial stubs technique and designed to provide world highest performance spiral antenna with 6+ dBic gain over the specified frequency band while maintaining the wider beam-width.


The high performance cavity backed spiral antennas are highly suitable for transmission, reception, monitoring, scanning, ECM, surveillance, signal intelligence (SIGINT), direction finding (DF), telemetry and airborne applications due to its ultra broad band design feature. The LHCP cavity backed spril antenna or RHCP cavity backed spiral antennas are sealed in an aluminum cavity and is highly immune to noise. Matching circuit of cavity backed spiral antennas are housed inside the main body of the antenna.

A special mounting hardware to mount the cavity backed spiral antenna on vertical pole having outer diameter of 38-52mm (1.5"-2"). Higher diameter mounting bracket including any customized mounting can be supplied on request. Spiral antenna N-Female termination is fixed on top of the antenna body for easy connectivity. Other termination like SMA/BNC/TNC can be supplied on request with the cavity backed spiral antenna.


All the high quality cavity backed spiral antennas are light weight, broadband and rugged spiral antennas, supplied with Nylon plastic cover to protect the antenna from environment. The cavity backed spiral antenna is designed to perform with much higher efficiency than conventional rubber duck antenna. Some of the cavity backed spiral antennas manufactured by Antenna Experts are listed in our "Spiral Antenna" section. Antenna Experts would be pleased to discuss your specific requirement with customized mounting brackets.


Please refer to our "Cavity Backed Spiral Antenna" section for more details on cavity backed spiral antenna products datasheets and installation manual. Also you can ask us for detailed datasheets of these cavity backed spiral antennas in pdf format. You can also request more technical information like VSWR curve and radiation patterns.