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US 11,323,072 B1Granted
Mixer with series connected active devices
AssigneeHRL Laboratories, LLC
InventorsJongchan Kang, Ara K. Kurdoghlian
Life of this patent
Estimating the term…
Abstract
A unit cell for a resistive mixer includes a plurality of active devices arranged in series, wherein each of said plurality of active devices having a different output conductance. A resistive mixer includes a plurality of active devices connected in series with one another to form a unit cell.
Claims4
An apparatus for reducing a third harmonic of an RF signal in a mixer comprising a plurality of unit cells, the unit cells being connected in a ring of unit cells having an RF input, a LO input and an IF output, the apparatus comprising:
- at least a pair of active devices disposed in each of said unit cells, each of said pair of active devices having a pair of current carrying electrodes and at least one control electrode;
- a first circuit connecting the at least a pair of active devices in each of said unit cells so that said current carrying electrodes of the active devices in each unit cell are coupled in series with each other and also connected to current carrying terminals of neighboring unit cells in said ring of unit cells;
- a second circuit connecting the at least a pair of active devices in each of said unit cells so that their control electrodes are coupled in parallel with each other and also connected to said LO input;
- and
- wherein sizes of at least one semiconductor element in each of the pair of active devices in each of said unit cells being differently sized relative to each other in said unit cells.
2 more elements
Dependencies are inferred from the claim text.