Method for achieving immediate and accurate automatic...

Details Method for achieving immediate and accurate automatic... Method for achieving immediate and accurate automatic...

2007-01-30

2007-01-30

Nguyen, Tony T. (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

C455S164200, C455S182100, C455S192200, C455S277100

Reexamination Certificate

active

10637671

ABSTRACT:
An automatic frequency tuning (AFT) system which can effect immediate and accurate automatic frequency tuning of the local oscillator (LO) of a receiver, in order to achieve a stable intermediate frequency (IF) signal while reducing the power consumption and the cost of the system. In the automatic frequency tuning (AFT) system, an analog-to-digital converter (ADC) converts the intermediate frequency (IF) to a digital value which is sent to a microcontroller. A signal sent from the microcontroller accurately and automatically tunes the local oscillator (LO).

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