Concentrated constant irreciprocal device
US6696901B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2001 |
| Grant date | Feb 24, 2004 |
| Priority date | — |
| Expiry date | Feb 2, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/52
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A concentrated constant, non-reciprocal device comprising a permanent magnet for applying a DC magnetic field to a ferrimagnetic body, an assembly in which at least a part of a plurality of center conductors one end of which serves as a common terminal and the other of which serves as a first input/output terminal is wound on or embedded in the ferrimagnetic body, a plurality of second input/output terminals, a plurality of impedance converting circuits connected between the second input/output terminals and the first input/output terminals, respectively, and a plurality of load capacitors connected between the first input/output terminals and the common terminals, respectively. The input impedance Zi of the corresponding first input/output terminal at the operating center frequency and an external impedance Zo connected with the corresponding second input/output terminal satisfy 0.05≦Zi/Zo≦0.9. As a result, it is possible to provide a small concentrated constant circulator/isolator of a wide band width having excellent electric characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.