The Model 3101 Conical Log Spiral is made with spiral windings of coaxial cable attached to the outside of a fiberglass cone.
Outside windings improve heat dissipation. This cone is attached to a delrin rod equipped with an aluminum base. The antenna mount base accepts standard 1/4 in x 20 threads from a tripod.
Once used exclusively for MIL-STD and SAE testing, conical log spiral antennas are effective for other types of measurements too. For example they can be used for close-in "quick-looks" to find the spectral characteristics of RF emissions. For immunity testing, conical log spirals generate reasonable field strengths with modest power input. By placing conical log spiral antennas in a vertical position with respect to the ground plane, they can also be used as omni-directional, horizontally polarized antennas for electromagnetic site surveys.
- Compact size
- Extremely low VSWR
- Left-hand circular polarization
- Individually Calibrated at 1 m per SAE ARP 958 Actual antenna factors and a signed Certificate of Calibration Conformance provided
- Base drilled to accept ETS-Lindgren or other tripod mount with standard 1/4 in x 20 threads
- Base drilled to accept ETS-Lindgren or other tripod mount with standard 1/4 in x 20 threads
- Support Rod
- Two Year Warranty
Electrical Specifications
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Frequency Minimum
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200 MHz
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Frequency Maximum
|
1 GHz
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Impedance (Nominal)
|
50 Ohm
|
Maximum Continuous Power
|
100 W
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Pattern Type
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directional
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Peak Power
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150 W
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Polarization
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circular
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VSWR
|
2.4:1
|
Physical Specifications
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Depth
|
81.3 cm (32.01 inches)
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Weight
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4.5 kg ( 9.92 lb )
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Standards
CISPR 11 |
CISPR 14 - 1 |
CISPR 14 - 2 |
CISPR 14 - 2 |
CISPR 16 - 1 |
CISPR 16 - 2 |
CISPR 16 - 3 |
CISPR 16 - 4 |
CISPR 22 |
CISPR 24 |
IEC/TR EN 61000 - 1 - 1 |
IEC/TR EN 61000 - 2 - 1 |
IEC/TR EN 61000 - 2 - 3 |
IEC EN 61000 - 3 - 2 |
IEC EN 61000 - 3 - 4 |
IEC/TC EN 61000 - 3 - 5 |
IEC EN 61000 - 4 - 2 |
IEC EN 61000 - 4 - 3 |
IEC EN 61000 - 4 - 4 |
IEC EN 61000 - 4 - 5 |
IEC EN 61000 - 4 - 6 |
IEC EN 61000 - 4 - 7 |
IEC EN 61000 - 4 - 8 |
IEC EN 61000 - 4 - 9 |
IEC EN 61000 - 4 - 11 |
EN 50 081 part 1 |
EN 50 081 part 2 |
EN 55 011 |
EN 55 013 |
EN 55 014 |
EN 55 015 |
EN 55 020 |
EN 55 022 |
EN 55 024 |
EN 50 082 part 1 |
EN 50 082 part 2 |
EN 50 093 |
FCC Part 15 |
MIL-STD - 461E |
|