Circuits for intermediate-frequency-filterless, double-conversion receivers
AssigneeThe Trustees of Columbia University in the City of New York
InventorsGuoxiang Han, Peter R. Kinget, Tanbir Haque
Life of this patent
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Abstract
Circuits for a receiver, comprising: M first mixers that each receive an input signal, that are each clocked by a different phase of a first common clock frequency, and that each provide an output, wherein M is a count of the first mixers; and M sets of N second mixers, wherein N is a count of the second mixers in each of the M sets, wherein each second mixer in each set of N second mixers receives as an input the output of a corresponding one of the M first mixers, wherein each of the N second mixers in each of the M sets are clocked by a different phase of a second common clock frequency, and wherein each of the second mixers has an output.
Claims9
A circuit for a receiver, comprising:
- M first mixers that each receive an input signal, that are each clocked by a different phase of a first common clock frequency, and that each provide an output, wherein M is a count of the first mixers;
- M sets of N second mixers, wherein N is a count of the second mixers in each of the M sets, wherein each second mixer in each set of N second mixers receives as an input the output of a corresponding one of the M first mixers, wherein each of the N second mixers in each of the M sets are clocked by a different phase of a second common clock frequency, and wherein each of the second mixers has an output;
- M harmonic rejection termination networks that each receive the outputs of the N second mixers in a corresponding one of the M sets, and that each provide an in-phase output and a quadrature-phase output;
- M in-phase trans-impedance amplifiers that each receive the in-phase output from a corresponding one of the M harmonic rejection termination networks and that each provide an in-phase baseband output signal;
- and
- M in-phase trans-impedance amplifiers that each receive the quadrature-phase output from a corresponding one of the M harmonic rejection termination networks and that each provide an quadrature-phase baseband output signal.
Dependencies are inferred from the claim text.