GB2140215B - Extra low frequency underground wireless antenna - Google Patents
Extra low frequency underground wireless antennaInfo
- Publication number
- GB2140215B GB2140215B GB08311247A GB8311247A GB2140215B GB 2140215 B GB2140215 B GB 2140215B GB 08311247 A GB08311247 A GB 08311247A GB 8311247 A GB8311247 A GB 8311247A GB 2140215 B GB2140215 B GB 2140215B
- Authority
- GB
- United Kingdom
- Prior art keywords
- low frequency
- wireless antenna
- extra low
- underground wireless
- frequency underground
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/04—Adaptation for subterranean or subaqueous use
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08311247A GB2140215B (en) | 1983-04-26 | 1983-04-26 | Extra low frequency underground wireless antenna |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08311247A GB2140215B (en) | 1983-04-26 | 1983-04-26 | Extra low frequency underground wireless antenna |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2140215A GB2140215A (en) | 1984-11-21 |
GB2140215B true GB2140215B (en) | 1986-08-06 |
Family
ID=10541665
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08311247A Expired GB2140215B (en) | 1983-04-26 | 1983-04-26 | Extra low frequency underground wireless antenna |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2140215B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4697191A (en) * | 1985-05-08 | 1987-09-29 | Science Applications International Corporation | Omniazimuthal antenna |
US6218994B1 (en) * | 1993-10-04 | 2001-04-17 | The United States Of America As Represented By The Secretary Of The Navy | Small antennas for communication over sea ice |
-
1983
- 1983-04-26 GB GB08311247A patent/GB2140215B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB2140215A (en) | 1984-11-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |