Electrically small quasi isotropic extendable antenna
US10581159B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 19, 2017 |
| Grant date | Mar 3, 2020 |
| Priority date | — |
| Expiry date | Aug 4, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04R60/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention discloses an extendable antenna for a portable communication device, made of two radiating wires each shaped as an open loop; a first loop fixed and a second loop movable between two positions: in parallel or alternatively vertically to the first loop; the parallel position suitable for compactly carrying the device in non-active mode, and the vertical combination configured to produce a substantially isotropic radiation pattern, particularly instrumental for satellite communications. According to one embodiment, this device is a satellite served Personal Locator Beacon (PLB) for Search and Rescue (SAR) of people in distress, configured to be wrist worn.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.