2 GHz to 18 GHz Cavity Backed Spiral Antenna OBS-20180

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2 GHz to 18 GHz Cavity Backed Spiral Antenna OBS-20180

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$1235

The OBS-20180 is a compact, moderate gain, moderate VSWR, circularly-polarized cavity-backed spiral antenna designed to transmit and receive in the frequency band of2.0 GHz to18.0 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 beamwidth,extreme flexibility for carrying, and light weight.

The seadvantages 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 antenna’s outermost dimensions are a diameter of 2.6” and height of 2.0”.

SKU: OBS-20180 Categories: Cavity Backed Spiral Antenna, RF Antenna

Description

SPEC

Cavity Backed Spiral Antenna

2GHz to 18GHz

OBS20180

The OBS2040 is a compact, moderate gain, moderate VSWR, circularly-polarized cavity-backed spiral antenna designed to transmit and receive in the frequency band of 2.0 GHz to 18.0 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 beam-width, extreme flexibility for carrying, and light weight.

The seadvant ages 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 antenna’s outermost dimensions are a diameter of 68mm and 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 beam width

 

Part No.

OBS20180

Frequency*

Nominal Gain3 dB

VSWR

Pattern

3 dB Beam width

10 dB Beam width

Input Impedance

Input Connector

2GHz-18GHz

-3 Typ~1 Typ16°

2.5?1Maximum2.0:1 Typical

Directional Bean

65°Minimum?Typical

120° Typical

50 Ohms Nominal

SMA-female

 

 

 

PDF

Outline

2 GHz to 18 GHz Cavity Backed Spiral Antenna OBS-20180

Plot

2 GHz to 18 GHz Cavity Backed Spiral Antenna OBS-201802 GHz to 18 GHz Cavity Backed Spiral Antenna OBS-201802 GHz to 18 GHz Cavity Backed Spiral Antenna OBS-20180

Additional information

Min. Frequency (GHz)

2

Max. Frequency (GHz)

18

Gain (dBi)

-3 Typ~1 Typ16°

VSWR

2.5:1

Impedance (Ω)

50

Connection Type

SMA-Female

Polarization

LHCP/RHCP

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