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CAVITY BACKED SPIRAL ANTENNAS (pdf file 59k)

  • MULTI-OCTAVE BANDWIDTH
  • CIRCULARLY POLARIZED
  • CONSTANT BEAMWIDTH
  • LOW AXIAL RATIO

DESCRIPTION

MEC's cavity backed spiral series offer constant beamwidth, low axial ratio, and wideband performances. Models 2010's, 2040's, 2070, 2090, and TT818 series which utilize a tapered line balun design provide excellent repeatability in electrical performances from unit to unit and can be amplitude or phase matched in pairs or in groups. Models 2100, C390-188, -223, and -227 series which utilize a Marchand balun design yield improvements in gain and beam squint.

All units offer low VSWR, light weight, compact size, and are suitable for airborne or shipboard Direction Finding System or Radar Warning Receiver applications.

The table below lists available spiral antennas by model number and frequency. For electrical specifications, and dimensional information refer to the individual data sheets. Additional data is available upon request. The models listed in the table are only a representative sample of MEC’s capabilities. Contact MEC with your specific requirements.

 

MODEL NUMBER

FREQUENCY (GHz)

INPUT INTERFACE

GAIN (dBiL)

NOMINAL 3-dB BEAMWIDTH (degrees)

BEAM SQUINT (degrees)

CW POWER (WATTS)

POLARIZATION

MAXIMUM AXIAL RATIO (dB)

NAXIMUM VSWR

2010

2010-1

2010-2

2-18

2-18

2-18

SMA

SMA

SMA

-7 to 1

-7 to 1

-7 to 1

80

80

80

<6

<6

<6

5

5

5

LCP

LCP

LCP

1.5

1.5

1.5

2.3:1

2.3:1

2.3:1

2070

2-18

SMA

-5.5 to1

80

<6

5

LCP

1.5

2.0:1

2100

2-18

TNC

-6 to 2

80

<5

5

RCP

2.0

2.3:1

C390-188

C390-223

2-18

2-18

SMA

SMA

-6 to 2

-6 to 2

80

80

<5

<5

5

5

LCP

RCP

1.5

1.5

2.5:1

2.5:1

C390-227

2-18

SMA

-6 to 2

80

<5

5

LCP

2.0

2.5:1

2040

2040-1

0.5-2.0

0.5-2.0

SMA

SMA

-12 to 1

-12 to 1

80

80

<6

<6

10

10

LCP

LCP

1.5

1.5

2.3:1

2.3:1

2090

0.5-2.0

N-type

-7 to 2

80

<6

10

RCP

1.5

2.0:1

TT818

8-18

SMA

-2 to 2

80

<6

5

LCP

2.0

2.0:1

 Data subject to change without notice

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  Updated  05/24/04