Phase sector based RF signal decimation

摘要

Values representative of modulation signal components are extracted from a modulated signal. The modulated signal contains a modulation signal. A local clock signal is developed which correlates in time to the modulated signal and has a plurality of non-overlapping phase sectors per cycle. Signal values are acquired from the modulated signal, separately for at least one phase sector of one cycle of the local clock signal. At least two signal values from the same phase sector, but different clock cycles are combined to obtain at least one combined signal value representative of a modulation signal component.

主权项

1. A method for extracting values representative of modulation signal components from a modulated signal, the modulated signal containing a modulation signal, the method comprising:
developing a local clock signal which correlates in time to the modulated signal and has a plurality of non-overlapping phase sectors per cycle; acquiring at least one signal value from the modulated signal, separately for at least one phase sector of a plurality of cycles of the local clock signal, wherein acquiring is selected from the group consisting of sampling, impulse sampling, capturing, accumulating, and integrating; and combining at least two signal values from the same phase sector, but different local clock cycles to obtain at least one combined signal value representative of a modulation signal component.