File:Corner reflector antenna.jpg
No higher resolution available.
Corner_reflector_antenna.jpg (293 × 545 pixels, file size: 42 KB, MIME type: image/jpeg)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
| Description |
English: A corner reflector antenna, a common directional antenna used at UHF frequencies. It consists of a dipole driven element flanked by two screen reflectors, often at a 90° angle. |
| Date | |
| Source | Retrieved June 15, 2014 from J. S. Brown, "Evaluation of unidirectional antennas for 450-460 Mc" in Tele-Tech magazine, Caldwell-Clements Inc., Bristol, Connecticut, Vol. 11, No. 7, July 1952, p. 48 on American Radio History website |
| Author | J. S. Brown |
| Permission (Reusing this file) |
This 1952 issue of Tele-Tech magazine would have the copyright renewed in 1980. Online page scans of the Catalog of Copyright Entries, published by the US Copyright Office can be found here. [1] Search of the Renewals for Periodicals for 1979, 1980, and 1981 show no renewal entries for Tele-Tech. Therefore the magazine's copyright was not renewed and it is in the public domain. |
Licensing
|
This work is in the public domain because it was published in the United States between 1929 and 1963, and although there may or may not have been a copyright notice, the copyright was not renewed. For further explanation, see Commons:Hirtle chart and the copyright renewal logs. Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (70 years p.m.a.), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.
|
 |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 17:51, 16 June 2014 | | 293 × 545 (42 KB) | Chetvorno | User created page with UploadWizard |
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):
