| 摘要 |
#CMT# #/CMT# The method involves delivering an incidental signal to low noise amplifier stages (LNAI, LNAQ), and connecting a current output of the amplifier stages to a storage capacitor output to deliver a current signal and inversed current signal to the capacitor output during each half period of each period of the periodic signal for obtaining signal transposed into frequency at the capacitor. The voltage of the current output is initialized to a value equal to that of the voltage of the capacitor, during the occurrence of each period of the half period. #CMT# : #/CMT# An independent claim is also included for a device for processing incident signal in a radio frequency signal receiver comprising low noise amplifier stages. #CMT#USE : #/CMT# Method for processing a radio frequency signal e.g. digital terrestrial TV signal or signal transmitted in a frequency multiplexing transmission system, by frequency conversion, in a radio frequency signal receiver (claimed). #CMT#ADVANTAGE : #/CMT# The method improves the transposition of the frequency while limiting the degradation of the gain. The voltage of the current output is initialized to an equal value of the voltage of the condensing output during occurrence of each half period of the periodic signal, thus allowing the voltage difference to be zero, and hence absorbing the output charges of the secondary current output and avoiding the stray currents. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a block diagram illustrating an internal structure of a device for processing incident signal in a radio frequency signal receiver. ANT : Aerial CANI : Analog to digital converter FPBAI : Analog low-pass filter LNAI, LNAQ : Low noise amplifiers REC : Radio frequency signal receiver. |
