Model AS-1000-3000 1000-3000 MHz 3~6 dBic Gain 
 

SPIRAL ANTENNA

Design Features The 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 1000-3000 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 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.

Constructions The spiral antenna is sealed in an aluminum cavity and is highly immune to noise. Matching circuit of spiral antenna is housed inside the main body of the antenna. A special mounting hardware to mount the spiral antenna on vertical pole having outer diameter of 19-25.4mm (0.5"-1"). Higher diameter mounting 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 can be supplied on request. The AS-1000-3000 spiral antenna is light weight, broadband and rugged spiral antennas, supplied with Nylon plastic cover to protect the antenna from environment. The spiral antenna is designed to perform with much higher efficiency than conventional rubber duck antenna.

Electrical Specifications:
Frequency Range1000-3000 MHz
Gain3~6 dBic
Bandwidth1000-6000 MHz
PolarizationCircular - LHCP or RHCP
Input Impedance50 Ohms
Radiation PatternDirectional
Horizontal Beamwidth -Half Power Points55-65 Degrees
Front to Back Ratio16 dB.
VSWR2:1
RF Power Handling Capacity100 Watts
Input TerminationN-Female or SMA-Female

Mechanical Specifications:
MaterialsCopper, Aluminum & Fiberglass
Mounting Hardware -MaterialsMarine Grade Stainless Steel
Wind Rating170 Km/Hr.
Mounting TypePole Mount or Flange Mount
Overall Length180 mm
Shipping Length250 mm
Housing MaterialAluminum Enclosure
Maximum Mount Pipe Diameter 26 mm (1 Inch)
Radome MaterialFiber Glass
Radiating Elements - MaterialHigh Quality Copper
Gross Weight1 Kg.

Environmental Specifications:
Operating Temperature(-) 30 to +60 Degrees Celsius
Storage Temperature(-) 40 to +70 Degrees Celsius
Humidity0 to 95% RH