Back to results
US 8,138,817 B2Granted
Passive harmonic-rejection mixer
AssigneeNXP B.V.
InventorsJohannes Hubertus Antonius Brekelmans, Gerben Willem De Jong, Rachid El Waffaoui, Dennis Jeurissen, Jan Van Sinderen, Simon W K Lee
Life of this patent
Estimating the term…
Abstract
An electronic device comprising a passive harmonic-rejection mixer. The passive harmonic rejection mixer has an input connected to several sub-mixer stages, and the sub-mixer stages are connected to a summing module for generating the output. Each sub-mixing stage comprises a gating module and a respective amplifier, the gating module adapted to selectively pass the input signal or the input signal with inverted polarity under the control of control signals.
Claims11
An electronic device comprising;
- a passive harmonic-rejection mixer with an input for receiving an input signal and an output for supplying a output signal, wherein
- the mixer comprises multiple segments connected to the input;
- each respective one of the segments has a respective segment output for supplying a respective contribution to the output signal;
- the mixer comprises a summing module connected to the respective segment outputs for summing the respective contributions for generating the output signal;
- each respective segment comprises a respective gating module and a respective amplifier;
- each respective gating module has a gating input connected to the input for receiving the input signal and a control input to receive a control signal;
- each respective amplifier has an amplifier input connected to a gating output of the respective gating module;
- each respective amplifier has an amplifier output connected to the respective segment output;
- and
- each respective gating module is operative to selectively pass the input signal, or pass the input signal with inverted polarity, to the gating responsive to the control signal.
7 more elements
Dependencies are inferred from the claim text.