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US 2007/0178848 A1Published application
Generation of wideband frequencies in integrated frequency synthesizer
OwnerJu-Young Haninventor
Life of this patent
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Abstract
An automatic frequency controller (AFC) is integrated within an one-chip transceiver for controlling both a receiver oscillator and a transmission oscillator. The AFC inputs at least one mode signal indicating one of a reception mode and a transmission mode. The AFC controls the receiver oscillator for the reception mode and controls the transmission oscillator for the transmission mode. Such a one-chip transceiver may be incorporated into compact electronic products.
Claims21
A method of generating any of a receiver signal and a transmitter signal, comprising:
- receiving at least one mode signal indicating one of a reception mode and a transmission mode;
- comparing a reference signal with the receiver signal to determine a receiver gain curve used for generating the receiver signal in the reception mode;
- and
- comparing the reference signal with the transmitter signal to determine a transmitter gain curve used for generating the transmitter signal in the transmission mode.
1 more element
An automatic frequency controller comprising:
- a start controller for indicating one of a reception mode and a transmission mode;
- a frequency detector for comparing a reference signal with a receiver signal in a reception mode, and for comparing the reference signal with a transmitter signal in a transmission mode;
- and
- a data code block for determining a receiver code in the reception mode and for determining a transmitter code in the transmission mode, depending on the comparison from the frequency detector.
1 more element
An integrated frequency synthesizer, comprising:
- a receiver oscillator for generating a receiver signal having a frequency according too receiver gain curve;
- a transmitter oscillator for generating a transmitter signal having a frequency according to a transmitter gain curve;
- and
- an automatic frequency controller for generating a receiver code that determines the receiver gain curve by comparing a reference signal and the receiver signal in a reception mode, and for generating a transmitter code that determines the transmitter gain curve by comparing the reference signal and the transmitter signal in a transmission mode.
1 more element
Dependencies are inferred from the claim text.