Discrete filter, sampling mixer, and radio device

Details Discrete filter, sampling mixer, and radio device Discrete filter, sampling mixer, and radio device

2007-06-08

2011-10-04

Lam, Tuan T (Department: 2816)

Telecommunications

Transmitter

Frequency conversion

C327S552000, C327S553000

Reexamination Certificate

active

08032094

ABSTRACT:
Provided is a discrete filter capable of adjusting the number of notches and the notch frequency and easily eliminating a particular frequency component. In a sampling mixer (100), a control signal generation unit (104) generates a plurality of control signals having the same frequency and different phases. A convolution capacity unit (110) integrates the discrete signals obtained by sampling reception signals by using convolution capacitors at a timing based on the control signals. The signals integrated by the convolution capacitors are successively emitted at the timing based on a control signal other than the control signals used for the integration timing. Cb (15) integrates the emitted discrete signals. Thus, by adjusting the number of the convolution capacitors arranged in parallel to one another and the capacitance of each of the convolution capacitors, it is possible to realize a sampling mixer capable of adjusting the number of notches and the notch frequency and easily eliminating a particular frequency component.

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International Search Report dated Sep. 25, 2007.

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