Miniature multi-decade GHz balun
US9071229B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 30, 2013 |
| Grant date | Jun 30, 2015 |
| Priority date | — |
| Expiry date | Jan 3, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/42
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A miniature wideband balun is realized wherein a miniature rectangular high permeability ferrite binocular core is wound with a single wire on the first of three legs and a twisted pair of wires on the third of three legs. Each winding is configured from 36 gauge wire to include two turns with precise positioning and spacing on the legs, and precise control over the length and position of the non-wound wire portions. The non-wound wire portions have their ends welded to the conductive terminals of a flat insulating substrate which the core is bonded to. Such an approach results in a wideband response of from 10 MHz to at least 6000 MHz with a substantially flat insertion loss and a low return loss. Additionally, a lid is bonded to the top of the core in order to form a package conducive to handling by standard pick and place robotic assembly machinery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.