Active, highly linear reception aerial amplifier circuit - has input stage input terminal formed by control or source terminals of active tri-pole

摘要

The circuit has input side noise matching with several active tri-poles. The input stage contains the first active tri-pole, and an input terminal is coupled to the output terminal of the passive aerial part. The second output terminal of the latter is linked to the reference terminal of the amplifier. The input terminal (13) of the input stage (14) is formed either by the control terminal (11), or the source terminal (10) of the first active tri-pole (1). A feedback four-pole (5) has an input (50) and an output gate (51), with the input gate energised either by the input stage output voltage, or by a derived signal, or by the input stage output current, or by a derived signal. The output gate is either in parallel, or in series to the input stage input. ADVANTAGE - Facility for aerial structure with relatively narrow band impedance course.