Nonreciprocal circuit device and composite electronic component
US5945887A · kind A · utility
63Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1998 |
| Grant date | Aug 31, 1999 |
| Priority date | — |
| Expiry date | Mar 20, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/383
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A nonreciprocal circuit device that avoids the problems of increased loss and narrowed frequency bandwidth when used with a low power supply voltage. An isolator (nonreciprocal circuit device) has a plurality of center electrodes (2 through 4) disposed so as to intersect and having a ferrite (5) disposed in alignment with the point of intersection, to which a DC magnetic field HDC is applied. An impedance conversion circuit (6) is added to the port of any one of center electrodes (2 through 4), setting the input impedance Zi to 2<Zi<12.5 ohms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.