0.8 GHz to 4 GHz Cavity Backed Spiral Antenna OBS-840

Description

Product Overview

The OBS-840 is a compact, moderate gain, moderate VSWR, circularly-polarized cavity-backed spiral antenna designed to transmit and receive in the frequency band of 0.8 GHz to 4.0 GHz. The antenna exhibits an excellent impedance match and radiation pattern.

It is capable of receiving both linearly polarized signals and a circularly polarized signal. The linear gain (dBil) is about 3 dB lower than the circular gain (dBic).

The antenna has the advantages of a low profile, a planar aperture, no phase center offset, near-constant beam width across the frequency band, normally symmetrical radiation bandwidth, extreme flexibility for carrying, and lightweight.

These advantages render the antenna a very good candidate for electronic-warfare, direction-finding, telemetry, and surveillance systems, as well as flush-mounted airborne applications. The antenna can be used as a broadband feed for reflector antennas.

The antennas outermost dimensions are a diameter of 68mm and a height of 50mm.

Applications

• Satellite communications
• Personal mobile communications
• Electronic Warfare, Direction Finding, Telemetry and Surveillance Systems
• Embedded Airborne Applications

Features

• Very convenient to carry
• Wide frequency band
• Light Weight
• Small volume
• Easy package
• Main lobe width
• With circular polarization, wide beamwidth