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US 8,478,215 B2Granted
Harmonic rejection mixer and phase adjustment method thereof
AssigneeRenesas Electronics Corporation
InventorNaohiro Matsui
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AssigneeRenesas Electronics Corporation
InventorNaohiro Matsui
Estimating the term…
A harmonic rejection mixer converts a frequency of a radio frequency signal by using a first to a third local signals (LOs) whose phases are different from each other, and the harmonic rejection mixer includes a phase difference detection circuit for detecting a phase difference between the first LO and the second LO, a phase difference detection circuit for detecting a phase difference between the first LO and the third LO, a phase adjustment circuit for adjusting the phase of the second LO so that the phase difference detected by the phase difference detection circuit becomes a first phase difference, and a phase adjustment circuit for adjusting the phase of the third LO so that the phase difference detected by the phase difference detection circuit becomes a second phase difference. It is thereby possible to achieve high precision harmonic rejection characteristics.
A harmonic rejection mixer configured to convert a frequency of a radio frequency signal based on a first, a second, and a third local signals, the harmonic rejection mixer comprising:
A phase adjustment method of a first, a second, and a third local signals whose phases are different from each other in a harmonic rejection mixer for converting a frequency of a radio frequency signal by using the first, the second, and the third local signals, the phase adjustment method comprising the steps of:
Dependencies are inferred from the claim text.