Transistor balanced mixer
US4461042A · kind A · utility
11Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 9, 1981 |
| Grant date | Jul 17, 1984 |
| Priority date | — |
| Expiry date | Oct 9, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D2200/0043
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A frequency mixer or converter which is applicable for use in superheterodyne radio frequency signal receivers and has good linearity characteristics as well as a low noise characteristic. The mixer utilizes a balanced transistor pair arrangement with an RC highpass filter but does not use a differential amplifier for amplifying the radio frequency signals. This results in a mixer having good low noise characteristics and good linearity as well as high attenuation of spurious intermediate frequency signals. In addition, the design is amenable to fabrication by integrated circuit technology.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.