IF FSK receiver

Details IF FSK receiver IF FSK receiver

2005-07-18

2008-11-04

Odom, Curtis B (Department: 2611)

Pulse or digital communications

Receivers

C375S324000, C375S330000

Reexamination Certificate

active

07447275

ABSTRACT:
In one embodiment, the present invention is a low-power, and high performance receiver including an IF demodulator for high data rate, frequency modulated systems, such as Bluetooth. The IF demodulator is implemented in analog domain for simplicity and lower power consumption and operates at an IF frequency. An IF demodulator comprises: a first IF differentiator for differentiating an I signal; a second IF differentiator for differentiating a Q signal; a cross-coupled multiplier for multiplying the differentiated I signal with the Q signal and multiplying the differentiated Q signal with the I signal to extract frequency information from the I signal and the Q signal; and a slicer for converting the frequency information to digital data.

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