Frequency conversion circuits
US4709410A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1985 |
| Grant date | Nov 24, 1987 |
| Priority date | — |
| Expiry date | Apr 15, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D2200/0076
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A radio frequency circuit having at least one output terminal includes a plurality of non-linear elements, each having an output electrode. Means are provided for feeding at least one input signal to each one of the non-linear elements. The feeding means includes an electrical pathlength including at least one two port phase shifting element fed by at least the input signal, for providing a plurality of signal portions, each one fed to a corresponding one of the plurality of non-linear elements. These signal portions have a successively increasing phase shift related to the electrical pathlength of the two port phase shifting elements. The output electrodes of each non-linear element are interconnected by an input coupling means including at least one, different, two port phase shifting element, for successively electrically interconnecting the output electrode of each non-linear element. With such an arrangement, by providing two port phase shift elements in the input and output coupling means, proper phasing characteristics may be provided to such circuits without the necessity of using couplers or baluns which are generally difficult to fabricate, particularly, as broadband mono…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.