Mixer structures with enhanced conversion gain and reduced spurious signals
US5859559A · kind A · utility
47Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1997 |
| Grant date | Jan 12, 1999 |
| Priority date | — |
| Expiry date | Jul 31, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D2200/0043
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Mixer structures are described which include a current mirror for insertion of trickle currents to an input differential amplifier and an output interface for coupling an output differential amplifier to an output port. The current mirror trickle currents improve the mixer's conversion gain and third-order intercept point and the current mirror introduces them without introducing spurious signals. The output interface couples mixer currents to the output port while isolating the output port from power-supply spurious signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.