Vented radio frequency shielded enclosure
US4249033A · kind A · utility
12Cited by
2References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1979 |
| Grant date | Feb 3, 1981 |
| Priority date | — |
| Expiry date | Apr 13, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K9/0041
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A ventilated enclosure for shielding electronic equipment from radio frequency energy having a minimum wavelength .lambda. which comprises a metal container forming a fully enclosed volume in which the electronic equipment is mounted. Cooling means, such as a fan, directs air through the volume to cool the equipment. The air enters and leaves the volume through an inlet duct and an outlet duct, respectively. Each duct forms a waveguide having a major cross-sectional dimension less than .lambda./2 and a length of the order of 2 .lambda. or greater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.