Low loss power splitter
US4875024A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 5, 1988 |
| Grant date | Oct 17, 1989 |
| Priority date | — |
| Expiry date | Dec 5, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P5/16
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Apparatus for dividing and combining electromagnetic energy, particularly at microwave frequencies. An input port (4) is positioned generally equidistant from each of n output ports (5,6;31,32,33 . . . ), where n is a finite integer greater than 1. n quarter-wavelength impedance transforming conductors (20;41,42,43 . . . ) couple the input port (4) to the n output ports (5,6;31,32,33 . . . ), respectively. Positioned between each pair of adjacent output ports (5,6;31,32,33) is an isolation resistor (7). A pair of half-wavelength unity impedance transformers (21) couples each isolation resistor (7) to its two associated output ports (5,6;31,32,33 . . . ), respectively. The invention allows greater geometrical freedom than prior art splitters, and offers a lower loss for a given frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.