ETS-Lindgren 3101 Conical Log Spiral Antenna 200 MHz – 1 GHz
Description
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.
Features
- 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
Specifications
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Electrical Specifications |
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Frequency Minimum |
200 MHz |
|
Frequency Maximum |
1 GHz |
|
Impedance (Nominal) |
50 Ohm |
|
Maximum Continuous Power |
100 W |
|
Pattern Type |
directional |
|
Peak Power |
150 W |
|
Polarization |
circular |
|
VSWR |
2.4:1 |
|
Physical Specifications |
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Depth |
81.3 cm (32.01 inches) |
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Weight |
4.5 kg ( 9.92 lb ) |
