Glide-slope aerial system
US5121128A · kind A · utility
Inventors
Key dates
| Filing date | Mar 1, 1990 |
| Grant date | Jun 9, 1992 |
| Priority date | — |
| Expiry date | Mar 1, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/29
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Glide-slope aerial system intended to function in a relatively restricted space, for example the radome space of an aircraft, comprising one or more half-loop aerials which are supported by the electrically conducting ground plane of the radome space. Each aerial (10) is mounted on a separate base plate (11) whose dimensions are chosen in a manner such that the base plate is resonant at the frequency at which the respective aerial operates. The base plate is positioned in the radome space in a manner such that the base plate extends at least essentially parallel to the ground plane (14), the distance between the base plate and the ground plane being approximately equal to or less 1/4 of the wavelength at which the respective aerial functions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.