Patent ID: 6985707
Filing Date: 2006-01-10
Classification: H03G,H03J

Abstract:
1. Receiver comprising a resonance amplifier for selectively amplifying a modulated carrier signal, a signal demodulator, operably coupled to the resonance amplifier, for narrow band demodulation of the carrier signal to provide an RF carrier level indicator, an AFC signal generator, a first DC signal (A) being supplied to a first input of the AGC signal generator, the resonance amplifier having third and fourth transconductance amplifiers (TC fifth and sixth transconductance amplifiers (TC wherein the AGC signal generator derives first and second control signals (Iq, Id) from the first DC signal (A), the first control signal (Iq) is supplied to gain control inputs of the third and fourth transconductance amplifiers (TC the second control signal (Id) is supplied to gain control inputs of the fifth and sixth transconductance amplifiers (TC the first and second control signals (Iq, Id) increases at an increase of the first DC signal (A) and vice versa, and the first control signal (Iq) is stronger than the second control signal (Id).