Passive temperature compensating LC filter
US5920241A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 12, 1997 |
| Grant date | Jul 6, 1999 |
| Priority date | — |
| Expiry date | May 12, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2001/0057
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A phase shifter in which the change in phase changes with changes in temperature. The phase shifter includes a plurality of capacitors and inductors connected in series relation to form a filter network. Each of the capacitors has a dielectric material with a temperature coefficient so that the capacitance of the capacitor varies with temperature. Each of the inductors has a ferrite material which has a temperature coefficient so that the inductance of the inductor varies with temperature. The temperature coefficients of the dielectric material of the capacitors and the ferrite material of the inductors have the same sign, i.e, either negative or positive, and preferably are of the same value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.