Introduction to Detector Log Video Amplifiers (DLVAs)
Detector Log Video Amplifiers (DLVAs) are used extensively in applications requiring an output voltage related to the power of a received RF signal. These units are used extensively in direction finding and channelised receivers as well as phase array radar. In order to cope with a wide range of input signals a log amplifier is used to provide a linear voltage output per dBm of input power.
Typically the input range of a DVLA will operate over 50dB or more with a base sensitivity less than -40dBm whilst providing linear conversion within ±1dB for all power levels, frequencies and temperatures. Where greater sensitivity and power levels are expected the Extended Range DLVA (ERDLVA) offers even greater performance.
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