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Antenna Selection by Test Type
IEEE STD 299
IEEE Standard Method for Measuring the Effectiveness of Electromagnetic Shielding Enclosures
Abstract: Uniform measurement procedures and techniques are provided for determining the effectiveness of electromagnetic shielding enclosures at frequencies from 9 kHz to 18 GHz (extendable to 50 Hz and 100 GHz, respectively) for enclosures having no dimension less than 2.0 m. The types of enclosures covered include, but are not limited to, single-shield or double-shield structures of various construction, such as bolted demountable, welded, or integral with a building; and made of materials such as steel plate, copper or aluminum sheet, screening, hardware cloth, metal foil, or shielding fabrics.
Summary: MIL-STD-285 and the origination of IEEE Std 299 go back several decades. More recent versions of Std 299 maintained technically sound test methods, but required that all frequency ranges be applied when testing enclosures. Some frequency ranges were not available for testing at all.
The MIL-STD-285 method for evaluating shielding effectiveness was developed in the USA for military purposes, and was published in 1956. It is probably the most frequently referenced standard covering attenuation measurements for shielded enclosures within the frequency range of 14 kHz to 18 GHz.
Common Antenna requirements for testing shielding effectiveness of enclosures as specified in MIL-STD 285 or NSA 65-5.
See our new AK-285R Antenna Kit, recieve antenna kit and our AK-285T Antenna Kit transmit antenna kit. Both antenna kits are a portable and economical approach to having all the antennas required for most shielding effectiveness testing.
Low Range (14 KHz - 20 MHz)
The small-loop method covers the 14 KHz - 20 MHz range usually splits into three ranges: 14 to 16 KHz, 140 to 160 KHz and 14 to 16 MHz bands.
| Frequency Range |
Antenna Model |
Antenna Type |
| 1 KHz - 30 MHz |
SAS-564 |
Passive 12" Loop Antenna |
| 1 KHz - 30 MHz |
SAS-563B |
Active 12" Loop Antenna |
Midrange (300 MHz - 1 GHz) Dipole Measurements
usually split into two bands: 300 to 400 MHz and 850 to 1000 MHz
| Frequency Range |
Antenna Model |
Antenna Type |
| 1 KHz - 30 MHz |
SAS-564 |
Passive 12" Loop Antenna |
| 1 KHz - 30 MHz |
SAS-563B |
Active 12" Loop Antenna |
High Range (1.7 to 18 GHz)
| Frequency Range |
Antenna Model |
Antenna Type |
| 1.7 GHz to 2.6 GHz |
SAS-581 |
Standard Gain Horn Antenna |
| 2.6 GHz to 3.95 GHz |
SAS-582 |
Standard Gain Horn Antenna |
| 3.95 GHz to 5.85 GHz |
SAS-583 |
Standard Gain Horn Antenna |
| 5.85 GHz to 8.2 GHz |
SAS-584 |
Standard Gain Horn Antenna |
| 8.2 GHz to 12.4 GHz |
SAS-585 |
Standard Gain Horn Antenna |
| 12.4 GHz to 18 GHz |
SAS-586 |
Standard Gain Horn Antenna |
| 700 MHz to 18 GHz |
SAS-571 |
Double Ridge Guide Horn Antenna |
| Frequency Range |
Antenna Model |
Antenna Type |
| 20 MHz - 330 MHz |
SAS-540 |
Biconical Antenna |
| 20 MHz - 330 MHz |
SAS-542 |
Biconical Antenna, Folding |
| 20 MHz - 300 MHz |
SAS-543 |
Biconical Antenna, 1000 W |
| 20 MHz - 300 MHz |
SAS-544 |
Biconical Antenna, 300 W |
| 170 MHz - 3 GHz |
SAS-570 |
Double Ridged Guide Horn Antenna |
| 700 MHz - 18 GHz |
SAS-571 |
Double Ridged Guide Horn |
| 18 GHz - 40 GHz |
SAS-574 |
Double Ridged Guide Horn |
| 18 GHz - 26.5 GHz |
SAS-572 |
Standard Gain Horn Antenna |
| 26.5 GHz - 40 GHz |
SAS-573 |
Standard Gain Horn Antenna |
| 290 MHz - 2 GHz |
SAS-510-2 |
Log Periodic Antenna |
| 190 MHz - 2 GHz |
SAS-512-2 |
Log Periodic Antenna |
| 190 MHz - 2 GHz |
SAS-512F-2 |
Log Periodic Antenna, Folding |
| 120 MHz - 4 GHz |
SAS-515 |
Log Periodic Antenna |
| 80 MHz - 4 GHz |
SAS-517 |
Log Periodic Antenna |
| 25 MHz - 2 GHz |
SAS-521-2 |
BiLogical Antenna |
| 9 kHz - 60 MHz |
SAS-550-1B |
Active Monopole Antenna, Battery Power |
| 1 kHz - 30 MHz |
SAS-563B |
Active 12" Loop, Battery Power |
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