Ground independent feed network for a multiterminal antenna
US5258770A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1991 |
| Grant date | Nov 2, 1993 |
| Priority date | — |
| Expiry date | Aug 29, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/20
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A feed network for a multiterminal antenna which provides excitation to the antenna independent of ground. The feed network provides a voltage differential between terminals of the antenna instead of between a common ground point and a terminal so that the antenna achieves enhanced broadband performance via an attached balun for each coaxial cable. The feed network is comprised of a base, through which a plurality of coaxial connector extend, and a plurality of printed circuit boards positioned so as to define a centerline through the feed network. The printed circuit boards have a first side having a first, wide twin lead and a second side having a second, narrow twin lead such that the electrical signals conducted by the feed network are balanced between each pair of first and second twin leads. The twin leads of the printed circuit board are electrically connected to a corresponding connector of the plurality of coaxial connectors. The width of the etched twin lead decreases as it progresses along a linear converging path from the base towards the apex of the feed network at which point the trace of each twin lead is varied to follow a path parallel to a centerline of the feed n…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.