COMMUNICATION ELECTRONIC
315, Vishwa Deep Building, District Center, Janak Puri, New Delhi - 110 058, INDIA
Phone: +91 11 2553 3230    Fax: +91 11 2553 3230    Mobile: +91 9868 128 127
Email: info@starantenna.com    Website: www.starantenna.com


CAVITY BACKED DUAL ARM ARCHIMEDEAN SPIRAL ANTENNA
SPC-AS-2A-CB 300-3000 MHz 3 dBi. Gain


Cavity Backed Dual Arm Archimedean Spiral Antenna is a frequency independent antenna and is weather protected suitable for out doors use in applications requiring to receive or transmit unidirectional circularly polarized RF radiation in 300 MHz. to 3000 MHz. frequency band.

The antenna is housed in a cavity and is highly immune to noise. The antenna has been developed for use to study and analyze all types of electrical discharges emanating from large electrical equipment. Matching balun is housed inside the main body of the antenna and the antenna uses a RF transparent window with a flange provided to mount the antenna directly on the body of the electrical equipment under study. Antenna termination, N-Female/SMA-Female is fixed on top of the antenna body for easy connectivity.


ELECTRICAL DATA
Frequency Range (MHz.)300-3000
Gain (dBi.)3 dBi.
Bandwidth (MHz.)Entire Band
PolarizationCircular
Input Impedance (Ohms.)50
Beamwidth HHpp (Degrees)50
Front to Back Ratio18
VSWR1:3
RF Power Handling Capacity (Watts)100
Input TerminationN-Female
MECHANICAL DATA
Wind Rating (KMPH)200
Operating Temperature-10 C to +85 C
Radiating Elements
- Material
- Cross Section

Aluminum
Strips
Cavity
- Material
- O.D. (mm)
- Height (mm)
- Thickness (mm)

Aluminum
460
130
3
Cavity Mouth Cover
- Material
- Wall Thickness (mm)
- Cavity Mouth O.D. (mm)

Nylon
6
460
Mounting Flange
- Material
- Diameter (mm)
- No. of Holes for M6 Nuts/Bolts
- Spacing between Mounting Hole

Aluminum
507
6
60 each
Overall Antenna Diameter 540 mm / 21 inch
Overall Antenna Height 140 mm / 5.5 inch
Overall Antenna Weight 5 kg

Please Note:   1. Specifications are subject to change without any notice.
2. Customized in-band and out of band versions are available on request.


VSWR CURVE
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AZIMUTH RADIATION PATTERN
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ELEVATION RADIATION PATTERN
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