Receiving circuit for converting signals comprising at least two ferromagnetic resonators
US4704739A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 1985 |
| Grant date | Nov 3, 1987 |
| Priority date | — |
| Expiry date | Jun 3, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03J3/16
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A signal converter comprises a filter formed of a first ferromagnetic resonator which supplied with an input signal that is to be converted and produces a filtered signal having a first frequency, a local oscillator formed of an active element and a second ferromagnetic resonator connected to the active element, produces an oscillating signal having a second frequency, a mixer receives and mixes the filtered signal and oscillating signal and produces a converted signal, the first ferromagnetic resonator is formed of a first ferrimagnetic crystal, a microstrip line magnetically coupled to the ferrimagnetic crystal and a first D.C. bias magnetic field means which applies a first D.C. bias magnetic field to the first ferrimagnetic crystal, the second ferromagnetic resonator is formed of a second ferrimagnetic crystal, a second microstrip line is magnetically coupled to the second ferrimagnetic crystal, and a second D.C. bias magnetic field means which applies a second D.C. bias magnetic field to the second ferrimagnetic crystal. The first and second ferrimagnetic crystals are composed of ferrimagnetic thin films such as YIG film formed by a thin film forming technique, such as liquid …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.