| 摘要 |
1. The circuit of the elimination of the fundamental component of a signal during the measurement of the useful sensitivity of broadcast receiver composed of a frequency filter and an amplifier with negative feedback characterised in that it has the signal standardization circuit (US) attached between the input terminal (WE) and the input of the frequency filter (FC), and it has the circuit of the amplitude error regulation (UA) and the circuit of the phase error regulation (UF) attached with their inputs between the input of the frequency filter (FC) and the output of the first amplifier (W1), where one element (FR1) of the negative feedback circuit (OS) is controlled from the output of the circuit of the amplitude error regulation (UA), and one of the elements (FR2) of the frequency filter (FC) is controlled from the circuit of the phase error regulation (UF).<IMAGE>
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