Measuring installation for frequency analysis of signal levels within a large amplitude range
AssigneeSiemens Aktiengesellschaft
InventorTheodor Schwierz
Life of this patent
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Abstract
The invention relates to a measuring installation for a frequency analysis of signal levels within a large volume range which is to be extremely fast. The measuring installation has an intermediate frequency amplifier arrangement with two and more selective amplifiers (SV1, SV2, SC3) which are equipped in each case with an automatic amplification regulation. The loop is broad band and contains a controllable attenuator (PR1, PR2, PR3) and a variable-gain amplifier (RV1, RV2, RV3). The band width of the selective amplifiers connected in series is reduced step-by-step in the direction of the signal flow. The regulating variables of the variable-gain amplifiers are summed in an adder (Ad) and supplied to a signal level evaluation and display installation (AA).
Claims7
A measuring installation for the frequency analysis of signal levels within a large amplitude range consisting of a frequency conversion installation with a synthesizer controllably generating the conversion frequencies, an intermediate frequency amplifier arrangement that can be controlled in its amplification, and a signal level evaluation and display installation, characterized in that for the execution of an extremely fast frequency analysis, the intermediate frequency amplifier arrangement has two or more selective amplifiers (SV1, SV2, SV3) arranged in series with automatic amplification regulation, and whose band width diminishes from amplifier to amplifier in the direction of the path of the received signal level to be amplified;
- and the regulating variables occurring at the individual amplifiers SV1, SV2 and SV3 are summed with consideration of the prescribed regulating characteristics in an adder (Ad);
- and the sum value is delivered from the output of the adder Ad to the signal level evaluation and display installation (AA).
Dependencies are inferred from the claim text.